def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--show", "--plot", action="store_true")
args = vutil.common_argparse(parser)
####### test 5-moment uniform grids
gk_uniform = viscid.load_file(os.path.join(sample_dir,
'sample_gkeyll_uniform_q_*.h5'))
plt.figure(figsize=(9, 3))
for i, grid in enumerate(gk_uniform.iter_times(":")):
plt.subplot2grid((1, 2), (0, i))
vlt.plot(grid['rho_i'], logscale=True, style='contourf', levels=128)
seeds = viscid.Line((-1.2, 0, 0), (1.4, 0, 0), 8)
b_lines, _ = viscid.calc_streamlines(grid['b'], seeds, method='euler1',
max_length=20.0)
vlt.plot2d_lines(b_lines, scalars='#000000', symdir='z', linewidth=1.0)
plt.title(grid.format_time('.02f'))
vlt.auto_adjust_subplots()
plt.suptitle("Uniform Gkeyll Dataset")
plt.savefig(next_plot_fname(__file__))
if args.show:
plt.show()
plt.clf()
return 0
def default_fluid_callback(i,
t,
seeds=None,
v_field=None,
anc_fields=None,
grid0=None,
grid1=None,
streamlines=None,
series_fname=None,
show=False,
**kwargs):
from viscid.plot import vpyplot as vlt
from matplotlib import pyplot as plt
_, ax0 = plt.subplots(1, 1)
vlt.plot(viscid.magnitude(v_field).atmost_nd(2), ax=ax0)
vlt.scatter_2d(seeds, ax=ax0)
vlt.streamplot(v_field.atmost_nd(2))
vlt.plot_lines2d(streamlines, ax=ax0)
plt.title('{0:8.3f}'.format(t))
if series_fname:
plt.savefig('{0}_{1:06d}.png'.format(series_fname, i))
if show:
vlt.show()
else:
plt.close()
def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--show", "--plot", action="store_true")
args = vutil.common_argparse(parser)
####### test 5-moment uniform grids
gk_uniform = viscid.load_file(os.path.join(sample_dir,
'sample_gkeyll_uniform_q_*.h5'))
_, axes = plt.subplots(1, 2, figsize=(9, 3))
for i, grid in enumerate(gk_uniform.iter_times(":")):
vlt.plot(grid['rho_i'], logscale=True, style='contourf', levels=128,
ax=axes[i])
seeds = viscid.Line((-1.2, 0, 0), (1.4, 0, 0), 8)
b_lines, _ = viscid.calc_streamlines(grid['b'], seeds, method='euler1',
max_length=20.0)
vlt.plot2d_lines(b_lines, scalars='#000000', symdir='z', linewidth=1.0)
plt.title(grid.format_time('.02f'))
vlt.auto_adjust_subplots()
plt.suptitle("Uniform Gkeyll Dataset")
plt.savefig(next_plot_fname(__file__))
if args.show:
plt.show()
plt.clf()
return 0
def run_div_test(fld, exact, title='', show=False, ignore_inexact=False):
t0 = time()
result_numexpr = viscid.div(fld, preferred="numexpr", only=False)
t1 = time()
logger.info("numexpr magnitude runtime: %g", t1 - t0)
result_diff = viscid.diff(result_numexpr, exact)['x=1:-1, y=1:-1, z=1:-1']
if not ignore_inexact and not (result_diff.data < 5e-5).all():
logger.warning("numexpr result is far from the exact result")
logger.info("min/max(abs(numexpr - exact)): %g / %g",
np.min(result_diff.data), np.max(result_diff.data))
planes = ["y=0j", "z=0j"]
nrows = 2
ncols = len(planes)
_, axes = plt.subplots(nrows, ncols, squeeze=False)
for i, p in enumerate(planes):
vlt.plot(result_numexpr, p, ax=axes[0, i], show=False)
vlt.plot(result_diff, p, ax=axes[1, i], show=False)
plt.suptitle(title)
vlt.auto_adjust_subplots(subplot_params=dict(top=0.9))
plt.savefig(next_plot_fname(__file__))
if show:
vlt.mplshow()
def guess_dipole_moment(b, r=2.0, strength=DEFAULT_STRENGTH, cap_angle=40,
cap_ntheta=121, cap_nphi=121, plot=False):
"""guess dipole moment from a B field"""
viscid.logger.warning("guess_dipole_moment doesn't seem to do better than "
"1.6 degrees, you may want to use cotr instead.")
cap = seed.SphericalCap(r=r, angle=cap_angle, ntheta=cap_ntheta,
nphi=cap_nphi)
b_cap = interp_trilin(b, cap)
# FIXME: this doesn't get closer than 1.6 deg @ (theta, mu) = (0, 7.5)
# so maybe the index is incorrect somehow?
idx = np.argmax(viscid.magnitude(b_cap).data)
pole = cap.points()[:, idx]
# FIXME: it should be achievabe to get strength from the magimum magnitude,
# up to the direction
pole = strength * pole / np.linalg.norm(pole)
# # not sure where 0.133 comes from, this is probably not correct
# pole *= 0.133 * np.dot(pole, b_cap.data.reshape(-1, 3)[idx, :]) * r**3
if plot:
from viscid.plot import vpyplot as vlt
from matplotlib import pyplot as plt
vlt.plot(viscid.magnitude(b_cap))
vlt.plot(viscid.magnitude(b_cap), style='contour', levels=10,
colors='k', colorbar=False, ax=plt.gca())
vlt.show()
return pole
def run_test_2d(f, main__file__, show=False):
vlt.clf()
slc = "x=-20j:12j, y=0j"
plot_kwargs = dict(title=True, earth=True)
vlt.subplot(141)
vlt.plot(f['pp'], slc, logscale=True, **plot_kwargs)
vlt.plot(np.abs(f['psi']), style='contour', logscale=True, levels=30,
linewidths=0.8, colors='grey', linestyles='solid', colorbar=None,
x=(-20, 12))
vlt.subplot(142)
vlt.plot(viscid.magnitude(f['bcc']), slc, logscale=True, **plot_kwargs)
vlt.plot2d_quiver(f['v'][slc], step=5, color='y', pivot='mid', width=0.03,
scale=600)
vlt.subplot(143)
vlt.plot(f['jy'], slc, clim=[-0.005, 0.005], **plot_kwargs)
vlt.streamplot(f['v'][slc], linewidth=0.3)
vlt.subplot(144)
vlt.plot(f['jy'], "x=7j:12j, y=0j, z=0j")
plt.suptitle("2D File")
vlt.auto_adjust_subplots(subplot_params=dict(top=0.9, wspace=1.3))
plt.gcf().set_size_inches(10, 4)
vlt.savefig(next_plot_fname(main__file__))
if show:
vlt.show()
def run_test(fld, seeds, plot2d=True, plot3d=True, add_title="",
view_kwargs=None, show=False, scatter_mpl=False, mesh_mvi=True):
interpolated_fld = viscid.interp_trilin(fld, seeds)
seed_name = seeds.__class__.__name__
if add_title:
seed_name += " " + add_title
try:
if not plot2d:
raise ImportError
from viscid.plot import vpyplot as vlt
from matplotlib import pyplot as plt
plt.clf()
# plt.plot(seeds.get_points()[2, :], fld)
mpl_plot_kwargs = dict()
if interpolated_fld.is_spherical():
mpl_plot_kwargs['hemisphere'] = 'north'
vlt.plot(interpolated_fld, **mpl_plot_kwargs)
plt.title(seed_name)
plt.savefig(next_plot_fname(__file__, series='2d'))
if show:
plt.show()
if scatter_mpl:
plt.clf()
vlt.plot2d_line(seeds.get_points(), fld, symdir='z', marker='o')
plt.savefig(next_plot_fname(__file__, series='2d'))
if show:
plt.show()
except ImportError:
pass
try:
if not plot3d:
raise ImportError
from viscid.plot import vlab
_ = get_mvi_fig(offscreen=not show)
try:
if mesh_mvi:
mesh = vlab.mesh_from_seeds(seeds, scalars=interpolated_fld)
mesh.actor.property.backface_culling = True
except RuntimeError:
pass
pts = seeds.get_points()
p = vlab.points3d(pts[0], pts[1], pts[2], interpolated_fld.flat_data,
scale_mode='none', scale_factor=0.02)
vlab.axes(p)
vlab.title(seed_name)
if view_kwargs:
vlab.view(**view_kwargs)
vlab.savefig(next_plot_fname(__file__, series='3d'))
if show:
vlab.show(stop=True)
except ImportError:
pass
def run_test_iof(f, main__file__, show=False):
vlt.clf()
fac_tot = 1e9 * f["fac_tot"]
plot_args = dict(projection="polar",
lin=[-300, 300],
bounding_lat=35.0,
drawcoastlines=True, # for basemap only
title="Total FAC\n",
gridec='gray',
label_lat=True,
label_mlt=True,
colorbar=True,
cbar_kwargs=dict(pad=0.15) # pad the colorbar away from the plot
)
ax1 = vlt.subplot(121, projection='polar')
vlt.plot(fac_tot, ax=ax1, hemisphere='north', **plot_args)
ax1.annotate('(a)', xy=(0, 0), textcoords="axes fraction",
xytext=(-0.1, 1.0), fontsize=18)
ax2 = vlt.subplot(122, projection='polar')
plot_args['gridec'] = False
vlt.plot(fac_tot, ax=ax2, hemisphere="south", style="contourf",
levels=50, extend="both", **plot_args)
ax2.annotate('(b)', xy=(0, 0), textcoords="axes fraction",
xytext=(-0.1, 1.0), fontsize=18)
vlt.auto_adjust_subplots(subplot_params=dict())
plt.gcf().set_size_inches(8, 4)
plt.savefig(next_plot_fname(main__file__))
if show:
vlt.mplshow()
def run_test(fld, seeds, plot2d=True, plot3d=True, add_title="",
view_kwargs=None, show=False, scatter_mpl=False, mesh_mvi=True):
interpolated_fld = viscid.interp_trilin(fld, seeds)
seed_name = seeds.__class__.__name__
if add_title:
seed_name += " " + add_title
try:
if not plot2d:
raise ImportError
from viscid.plot import vpyplot as vlt
from matplotlib import pyplot as plt
plt.clf()
# plt.plot(seeds.get_points()[2, :], fld)
mpl_plot_kwargs = dict()
if interpolated_fld.is_spherical():
mpl_plot_kwargs['hemisphere'] = 'north'
vlt.plot(interpolated_fld, **mpl_plot_kwargs)
plt.title(seed_name)
plt.savefig(next_plot_fname(__file__, series='2d'))
if show:
plt.show()
if scatter_mpl:
plt.clf()
vlt.plot2d_line(seeds.get_points(), fld, symdir='z', marker='o')
plt.savefig(next_plot_fname(__file__, series='2d'))
if show:
plt.show()
except ImportError:
pass
try:
if not plot3d:
raise ImportError
vlab, _ = get_mvi_fig()
try:
if mesh_mvi:
mesh = vlab.mesh_from_seeds(seeds, scalars=interpolated_fld)
mesh.actor.property.backface_culling = True
except RuntimeError:
pass
pts = seeds.get_points()
p = vlab.points3d(pts[0], pts[1], pts[2], interpolated_fld.flat_data,
scale_mode='none', scale_factor=0.02)
vlab.axes(p)
vlab.title(seed_name)
if view_kwargs:
vlab.view(**view_kwargs)
vlab.savefig(next_plot_fname(__file__, series='3d'))
if show:
vlab.show(stop=True)
except ImportError:
pass
def _main():
import viscid
from viscid import sample_dir
from viscid.plot import vpyplot as vlt
logger.setLevel(viscid.logging.DEBUG)
f = viscid.load_file(os.path.join(sample_dir, 'vpic_sample', 'global.vpc'))
vlt.plot(-f['n_e']['y=0j'], logscale=True, show=True)
def run_test(show=False):
f = viscid.load_file(os.path.join(viscid.sample_dir, "amr.xdmf"))
plot_kwargs = dict(patchec='y')
vlt.plot(f['f'], "z=0.0f", **plot_kwargs)
plt.savefig(next_plot_fname(__file__))
if show:
vlt.show()
def run_test(fld, seeds, kind, show=False):
plt.clf()
vlt.plot(viscid.interp(fld, seeds, kind=kind))
plt.title(kind)
plt.savefig(next_plot_fname(__file__))
if show:
vlt.show()
def run_test(show=False):
f = viscid.load_file(os.path.join(viscid.sample_dir, "amr.xdmf"))
plot_kwargs = dict(patchec='y')
vlt.plot(f['f'], "z=0.0j", **plot_kwargs)
plt.savefig(next_plot_fname(__file__))
if show:
vlt.show()
def run_test(fld, seeds, kind, show=False):
plt.clf()
vlt.plot(viscid.interp(fld, seeds, kind=kind))
plt.title(kind)
plt.savefig(next_plot_fname(__file__))
if show:
vlt.show()
def run_test(fld, seeds, plot2d=True, plot3d=True, add_title="",
view_kwargs=None, show=False):
interpolated_fld = viscid.interp_trilin(fld, seeds)
seed_name = seeds.__class__.__name__
if add_title:
seed_name += " " + add_title
try:
if not plot2d:
raise ImportError
from matplotlib import pyplot as plt
from viscid.plot import vpyplot as vlt
plt.clf()
# plt.plot(seeds.get_points()[2, :], fld)
mpl_plot_kwargs = dict()
if interpolated_fld.is_spherical():
mpl_plot_kwargs['hemisphere'] = 'north'
vlt.plot(interpolated_fld, **mpl_plot_kwargs)
plt.title(seed_name)
plt.savefig(next_plot_fname(__file__, series='2d'))
if show:
plt.show()
except ImportError:
pass
try:
if not plot3d:
raise ImportError
from viscid.plot import vlab
try:
fig = _global_ns['figure']
vlab.clf()
except KeyError:
fig = vlab.figure(size=[1200, 800], offscreen=not show)
_global_ns['figure'] = fig
try:
mesh = vlab.mesh_from_seeds(seeds, scalars=interpolated_fld)
mesh.actor.property.backface_culling = True
except RuntimeError:
pass
pts = seeds.get_points()
p = vlab.points3d(pts[0], pts[1], pts[2], interpolated_fld.flat_data,
scale_mode='none', scale_factor=0.02)
vlab.axes(p)
vlab.title(seed_name)
if view_kwargs:
vlab.view(**view_kwargs)
vlab.savefig(next_plot_fname(__file__, series='3d'))
if show:
vlab.show()
except ImportError:
pass
def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--show", "--plot", action="store_true")
args = vutil.common_argparse(parser)
f = viscid.load_file(os.path.join(viscid.sample_dir, "test.asc"))
vlt.plot(f['c1'], show=False)
plt.savefig(next_plot_fname(__file__))
if args.show:
vlt.show()
return 0
def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--show", "--plot", action="store_true")
args = viscid.vutil.common_argparse(parser)
# args.show = True
t = viscid.linspace_datetime64('2006-06-10 12:30:00.0',
'2006-06-10 12:33:00.0', 16)
tL = viscid.as_datetime64('2006-06-10 12:31:00.0')
tR = viscid.as_datetime64('2006-06-10 12:32:00.0')
y = np.linspace(2 * np.pi, 4 * np.pi, 12)
### plots with a datetime64 axis
f0 = viscid.ones([t, y], crd_names='ty', center='node')
T, Y = f0.get_crds(shaped=True)
f0.data += np.arange(T.size).reshape(T.shape)
f0.data += np.cos(Y)
fig = plt.figure(figsize=(10, 5))
# 1D plot
vlt.subplot(121)
vlt.plot(f0[tL:tR]['y=0'], marker='^')
plt.xlim(*viscid.as_datetime(t[[0, -1]]).tolist())
# 2D plot
vlt.subplot(122)
vlt.plot(f0, x=(t[0], t[-1]))
plt.suptitle("datetime64")
vlt.auto_adjust_subplots(subplot_params=dict(top=0.9))
plt.savefig(next_plot_fname(__file__))
if args.show:
vlt.show()
plt.close(fig)
### plots with a timedelta64 axis
tL = tL - t[0]
tR = tR - t[0]
t = t - t[0]
f0 = viscid.ones([t, y], crd_names='ty', center='node')
T, Y = f0.get_crds(shaped=True)
f0.data += np.arange(T.size).reshape(T.shape)
f0.data += np.cos(Y)
fig = plt.figure(figsize=(10, 5))
# 1D plot
vlt.subplot(121)
vlt.plot(f0[tL:tR]['y=0'], marker='^')
plt.xlim(*viscid.as_datetime(t[[0, -1]]).tolist())
# 2D plot
vlt.subplot(122)
vlt.plot(f0, x=(t[0], t[-1]))
plt.suptitle("timedelta64")
vlt.auto_adjust_subplots(subplot_params=dict(top=0.9))
plt.savefig(next_plot_fname(__file__))
if args.show:
vlt.show()
plt.close(fig)
return 0
def run_mpl_testA(show=False):
logger.info("2D cell centered tests")
x = np.array(np.linspace(-10, 10, 100), dtype=dtype)
y = np.array(np.linspace(-10, 10, 120), dtype=dtype)
z = np.array(np.linspace(-1, 1, 2), dtype=dtype)
fld_s = viscid.empty([x, y, z], center='cell')
Xcc, Ycc, Zcc = fld_s.get_crds_cc(shaped=True) # pylint: disable=unused-variable
fld_s[:, :, :] = np.sin(Xcc) + np.cos(Ycc)
_, axes = plt.subplots(4, 1, squeeze=False)
vlt.plot(fld_s, "y=20j", ax=axes[0, 0], show=False, plot_opts="lin_0")
vlt.plot(fld_s,
"x=0j:20j,y=0j:5j",
ax=axes[1, 0],
earth=True,
show=False,
plot_opts="x_-10_0,y_0_7")
vlt.plot(fld_s, "y=0j", ax=axes[2, 0], show=False, plot_opts="lin_-1_1")
vlt.plot(fld_s,
"z=0j,x=-20j:0j",
ax=axes[3, 0],
earth=True,
show=False,
plot_opts="lin_-5_5")
plt.suptitle("2d cell centered")
vlt.auto_adjust_subplots()
plt.savefig(next_plot_fname(__file__))
if show:
vlt.mplshow()
def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--show", "--plot", action="store_true")
args = vutil.common_argparse(parser)
f = viscid.load_file(os.path.join(sample_dir, 'vpic_sample', 'global.vpc'))
# some slices that are good to check
vlt.clf()
vlt.plot(f['bx']['x=:32.01j'])
plt.close()
vlt.clf()
vlt.plot(f['bx']['x=:33.0j'])
plt.close()
_, axes = vlt.subplots(2, 2, figsize=(8, 4))
for i, ti in enumerate([0, -1]):
f.activate_time(ti)
vlt.plot(f['n_e']['y=0j'], symmetric=False, ax=axes[0, i])
vlt.plot(f['bx']['y=0j'], symmetric=True, ax=axes[1, i])
axes[0, i].set_title(f.get_grid().time)
vlt.auto_adjust_subplots()
plt.savefig(next_plot_fname(__file__))
if args.show:
vlt.show()
plt.close()
return 0
def run_mag_test(fld, title="", show=False):
vx, vy, vz = fld.component_views() # pylint: disable=W0612
vx, vy, vz = fld.component_fields()
try:
t0 = time()
mag_ne = viscid.magnitude(fld, preferred="numexpr", only=False)
t1 = time()
logger.info("numexpr mag runtime: %g", t1 - t0)
except viscid.verror.BackendNotFound:
xfail("Numexpr is not installed")
planes = ["z=0", "y=0"]
nrows = 4
ncols = len(planes)
_, axes = plt.subplots(nrows, ncols, sharex=True, sharey=True, squeeze=False)
for ind, p in enumerate(planes):
vlt.plot(vx, p, ax=axes[0, ind], show=False)
vlt.plot(vy, p, ax=axes[1, ind], show=False)
vlt.plot(vz, p, ax=axes[2, ind], show=False)
vlt.plot(mag_ne, p, ax=axes[3, ind], show=False)
plt.suptitle(title)
vlt.auto_adjust_subplots(subplot_params=dict(top=0.9, right=0.9))
plt.gcf().set_size_inches(6, 7)
plt.savefig(next_plot_fname(__file__))
if show:
vlt.mplshow()
def run_mpl_testB(show=False):
logger.info("3D node centered tests")
x = np.array(np.linspace(-10, 10, 100), dtype=dtype)
y = np.array(np.linspace(-10, 10, 120), dtype=dtype)
z = np.array(np.linspace(-10, 10, 140), dtype=dtype)
fld_s = viscid.empty([x, y, z], center='node')
X, Y, Z = fld_s.get_crds_nc(shaped=True) # pylint: disable=W0612
fld_s[:, :, :] = np.sin(X) + np.cos(Y) - np.cos(Z)
# print("shape: ", fld_s.data.shape)
nrows = 4
ncols = 1
plt.subplot2grid((nrows, ncols), (0, 0))
vlt.plot(fld_s, "z=0,x=:30", earth=True, plot_opts="lin_0")
plt.subplot2grid((nrows, ncols), (1, 0))
vlt.plot(fld_s, "z=0.75f,x=-4:-1,y=-3f:3f", earth=True)
plt.subplot2grid((nrows, ncols), (2, 0))
vlt.plot(fld_s, "x=-0.5f:,y=-3f:3f,z=0f", earth=True)
plt.subplot2grid((nrows, ncols), (3, 0))
vlt.plot(fld_s, "x=0.0f,y=-5.0f:5.0f", earth=True, plot_opts="log,g")
plt.suptitle("3d node centered")
vlt.auto_adjust_subplots()
plt.savefig(next_plot_fname(__file__))
if show:
vlt.mplshow()
def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--show", "--plot", action="store_true")
args = vutil.common_argparse(parser)
f = viscid.load_file(os.path.join(sample_dir, 'vpic_sample', 'global.vpc'))
# some slices that are good to check
vlt.clf()
vlt.plot(f['bx']['x=:32.01j'])
plt.close()
vlt.clf()
vlt.plot(f['bx']['x=:33.0j'])
plt.close()
_, axes = vlt.subplots(2, 2, figsize=(8, 4))
for i, ti in enumerate([0, -1]):
f.activate_time(ti)
vlt.plot(f['n_e']['y=0j'], symmetric=False, ax=axes[0, i])
vlt.plot(f['bx']['y=0j'], symmetric=True, ax=axes[1, i])
axes[0, i].set_title(f.get_grid().time)
vlt.auto_adjust_subplots()
plt.savefig(next_plot_fname(__file__))
if args.show:
vlt.show()
plt.close()
return 0
def run_test_3d(f, main__file__, show=False):
vlt.clf()
slc = "x=-20f:12f, y=0f"
plot_kwargs = dict(title=True, earth=True)
vlt.subplot(141)
vlt.plot(f['pp'], slc, logscale=True, **plot_kwargs)
vlt.subplot(142)
vlt.plot(viscid.magnitude(f['bcc']), slc, logscale=True, **plot_kwargs)
vlt.plot2d_quiver(f['v'][slc],
step=5,
color='y',
pivot='mid',
width=0.03,
scale=600)
vlt.subplot(143)
vlt.plot(f['jy'], slc, clim=(-0.005, 0.005), **plot_kwargs)
vlt.streamplot(f['v'][slc], linewidth=0.3)
vlt.subplot(144)
vlt.plot(f['jy'], "x=7f:12f, y=0f, z=0f")
plt.suptitle("3D File")
vlt.auto_adjust_subplots(subplot_params=dict(top=0.9, wspace=1.3))
plt.gcf().set_size_inches(10, 4)
vlt.savefig(next_plot_fname(main__file__))
if show:
vlt.show()
def run_mpl_testB(show=False):
logger.info("3D node centered tests")
x = np.array(np.linspace(-10, 10, 100), dtype=dtype)
y = np.array(np.linspace(-10, 10, 120), dtype=dtype)
z = np.array(np.linspace(-10, 10, 140), dtype=dtype)
fld_s = viscid.empty([x, y, z], center='node')
X, Y, Z = fld_s.get_crds_nc(shaped=True) # pylint: disable=W0612
fld_s[:, :, :] = np.sin(X) + np.cos(Y) - np.cos(Z)
# print("shape: ", fld_s.data.shape)
_, axes = plt.subplots(4, 1, squeeze=False)
vlt.plot(fld_s, "z=0,x=:30", ax=axes[0, 0], earth=True, plot_opts="lin_0")
vlt.plot(fld_s, "z=0.75j,x=-4:-1,y=-3j:3j", ax=axes[1, 0], earth=True)
vlt.plot(fld_s, "x=-0.5j:,y=-3j:3j,z=0j", ax=axes[2, 0], earth=True)
vlt.plot(fld_s,
"x=0.0j,y=-5.0j:5.0j",
ax=axes[3, 0],
earth=True,
plot_opts="log,g")
plt.suptitle("3d node centered")
vlt.auto_adjust_subplots()
plt.savefig(next_plot_fname(__file__))
if show:
vlt.mplshow()
def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--show", "--plot", action="store_true")
args = viscid.vutil.common_argparse(parser)
# args.show = True
t = viscid.linspace_datetime64('2006-06-10 12:30:00.0',
'2006-06-10 12:33:00.0', 16)
tL = viscid.as_datetime64('2006-06-10 12:31:00.0')
tR = viscid.as_datetime64('2006-06-10 12:32:00.0')
y = np.linspace(2 * np.pi, 4 * np.pi, 12)
### plots with a datetime64 axis
f0 = viscid.ones([t, y], crd_names='ty', center='node')
T, Y = f0.get_crds(shaped=True)
f0.data += np.arange(T.size).reshape(T.shape)
f0.data += np.cos(Y)
fig = plt.figure(figsize=(10, 5))
# 1D plot
vlt.subplot(121)
vlt.plot(f0[tL:tR]['y=0'], marker='^')
plt.xlim(*viscid.as_datetime(t[[0, -1]]).tolist())
# 2D plot
vlt.subplot(122)
vlt.plot(f0, x=(t[0], t[-1]))
plt.suptitle("datetime64")
vlt.auto_adjust_subplots(subplot_params=dict(top=0.9))
plt.savefig(next_plot_fname(__file__))
if args.show:
vlt.show()
plt.close(fig)
### plots with a timedelta64 axis
tL = tL - t[0]
tR = tR - t[0]
t = t - t[0]
f0 = viscid.ones([t, y], crd_names='ty', center='node')
T, Y = f0.get_crds(shaped=True)
f0.data += np.arange(T.size).reshape(T.shape)
f0.data += np.cos(Y)
fig = plt.figure(figsize=(10, 5))
# 1D plot
vlt.subplot(121)
vlt.plot(f0[tL:tR]['y=0'], marker='^')
plt.xlim(*viscid.as_datetime(t[[0, -1]]).tolist())
# 2D plot
vlt.subplot(122)
vlt.plot(f0, x=(t[0], t[-1]))
plt.suptitle("timedelta64")
vlt.auto_adjust_subplots(subplot_params=dict(top=0.9))
plt.savefig(next_plot_fname(__file__))
if args.show:
vlt.show()
plt.close(fig)
return 0
def run_mpl_testA(show=False):
logger.info("2D cell centered tests")
x = np.array(np.linspace(-10, 10, 100), dtype=dtype)
y = np.array(np.linspace(-10, 10, 120), dtype=dtype)
z = np.array(np.linspace(-1, 1, 2), dtype=dtype)
fld_s = viscid.empty([x, y, z], center='cell')
Xcc, Ycc, Zcc = fld_s.get_crds_cc(shaped=True) # pylint: disable=unused-variable
fld_s[:, :, :] = np.sin(Xcc) + np.cos(Ycc)
_, axes = plt.subplots(4, 1, squeeze=False)
vlt.plot(fld_s, "y=20j", ax=axes[0, 0], show=False, plot_opts="lin_0")
vlt.plot(fld_s, "x=0j:20j,y=0j:5j", ax=axes[1, 0], earth=True, show=False,
plot_opts="x_-10_0,y_0_7")
vlt.plot(fld_s, "y=0j", ax=axes[2, 0], show=False, plot_opts="lin_-1_1")
vlt.plot(fld_s, "z=0j,x=-20j:0j", ax=axes[3, 0], earth=True, show=False,
plot_opts="lin_-5_5")
plt.suptitle("2d cell centered")
vlt.auto_adjust_subplots()
plt.savefig(next_plot_fname(__file__))
if show:
vlt.mplshow()
def run_mpl_testB(show=False):
logger.info("3D node centered tests")
x = np.array(np.linspace(-10, 10, 100), dtype=dtype)
y = np.array(np.linspace(-10, 10, 120), dtype=dtype)
z = np.array(np.linspace(-10, 10, 140), dtype=dtype)
fld_s = viscid.empty([x, y, z], center='node')
X, Y, Z = fld_s.get_crds_nc(shaped=True) # pylint: disable=W0612
fld_s[:, :, :] = np.sin(X) + np.cos(Y) - np.cos(Z)
# print("shape: ", fld_s.data.shape)
_, axes = plt.subplots(4, 1, squeeze=False)
vlt.plot(fld_s, "z=0,x=:30", ax=axes[0, 0], earth=True, plot_opts="lin_0")
vlt.plot(fld_s, "z=0.75j,x=-4:-1,y=-3j:3j", ax=axes[1, 0], earth=True)
vlt.plot(fld_s, "x=-0.5j:,y=-3j:3j,z=0j", ax=axes[2, 0], earth=True)
vlt.plot(fld_s, "x=0.0j,y=-5.0j:5.0j", ax=axes[3, 0], earth=True,
plot_opts="log,g")
plt.suptitle("3d node centered")
vlt.auto_adjust_subplots()
plt.savefig(next_plot_fname(__file__))
if show:
vlt.mplshow()
def default_fluid_callback(i, t, seeds=None, v_field=None, anc_fields=None,
grid0=None, grid1=None, streamlines=None,
series_fname=None, show=False, **kwargs):
from viscid.plot import vpyplot as vlt
from matplotlib import pyplot as plt
_, ax0 = plt.subplots(1, 1)
vlt.plot(viscid.magnitude(v_field).atmost_nd(2), ax=ax0)
vlt.scatter_2d(seeds, ax=ax0)
vlt.streamplot(v_field.atmost_nd(2))
vlt.plot_lines2d(streamlines, ax=ax0)
plt.title('{0:8.3f}'.format(t))
if series_fname:
plt.savefig('{0}_{1:06d}.png'.format(series_fname, i))
if show:
vlt.show()
else:
plt.close()
def compare_vectors(cc_fld, ecfc_fld, to_cc_fn, catol=1e-8, rtol=2.2e-6,
trim_slc=':', bnd=True, make_plots=False):
trimmed = cc_fld[trim_slc]
cc = to_cc_fn(ecfc_fld, bnd=bnd)
reldiff = (cc - trimmed) / viscid.magnitude(trimmed)
reldiff = reldiff["x=1:-1, y=1:-1, z=1:-1"]
reldiff.name = cc.name + " - " + trimmed.name
reldiff.pretty_name = cc.pretty_name + " - " + trimmed.pretty_name
comp_beyond_limit = [False] * 3
for i, d in enumerate('xyz'):
abs_max_rel_diff = np.nanmax(np.abs(reldiff[d]))
# trim first and last when diffing crds since they're extrapolated
# in the ecfc field, so we already know they won't match up do dx
max_crd_diff = np.max((trimmed.get_crd(d) - cc.get_crd(d))[1:-1])
print("{0}{1}, max absolute relative diff: {2:.3e} ({1} crds: {3:.1e})"
"".format(cc_fld.name, d, abs_max_rel_diff, max_crd_diff))
if abs_max_rel_diff > rtol or abs(max_crd_diff) > catol:
comp_beyond_limit[i] = True
# plot differences?
if make_plots:
ax1 = plt.subplot(311)
vlt.plot(cc_fld[d]['y=0j'], symmetric=True, earth=True)
plt.subplot(312, sharex=ax1, sharey=ax1)
vlt.plot(cc[d]['y=0j'], symmetric=True, earth=True)
plt.subplot(313, sharex=ax1, sharey=ax1)
vlt.plot(reldiff[d]['y=0j'], symmetric=True, earth=True)
vlt.show()
if any(comp_beyond_limit):
raise RuntimeError("Tolerance exceeded on ->CC accuracy")
def compare_vectors(orig_fld,
cmp_fld,
catol=1e-8,
rtol=2e-6,
trim_slc='x=2:-2, y=2:-2, z=2:-2',
make_plots=False):
# mag_shape = list(orig_fld.sshape) + [1]
mag = viscid.magnitude(orig_fld) # .data.reshape(mag_shape)
reldiff = (cmp_fld - orig_fld) / mag
reldiff = reldiff[trim_slc]
reldiff.name = cmp_fld.name + " - " + orig_fld.name
reldiff.pretty_name = cmp_fld.pretty_name + " - " + orig_fld.pretty_name
comp_beyond_limit = [False] * 3
for i, d in enumerate('xyz'):
abs_max_rel_diff = np.nanmax(np.abs(reldiff[d]))
max_crd_diff = np.max(orig_fld.get_crd(d) - cmp_fld.get_crd(d))
print("{0}{1}, max absolute relative diff: {2:.3e} ({1} crds: {3:.1e})"
"".format(cmp_fld.name, d, abs_max_rel_diff, max_crd_diff))
if abs_max_rel_diff > rtol or abs(max_crd_diff) > catol:
comp_beyond_limit[i] = True
# plot differences?
if make_plots:
plt.clf()
ax1 = plt.subplot(311)
vlt.plot(orig_fld[d]['y=0j'], symmetric=True, earth=True)
plt.subplot(312, sharex=ax1, sharey=ax1)
vlt.plot(cmp_fld[d]['y=0j'], symmetric=True, earth=True)
plt.subplot(313, sharex=ax1, sharey=ax1)
vlt.plot(reldiff[d]['y=0j'], symmetric=True, earth=True)
vlt.show()
def compare_vectors(orig_fld, cmp_fld, catol=1e-8, rtol=2e-6,
trim_slc='x=2:-2, y=2:-2, z=2:-2', make_plots=False):
# mag_shape = list(orig_fld.sshape) + [1]
mag = viscid.magnitude(orig_fld) # .data.reshape(mag_shape)
reldiff = (cmp_fld - orig_fld) / mag
reldiff = reldiff[trim_slc]
reldiff.name = cmp_fld.name + " - " + orig_fld.name
reldiff.pretty_name = cmp_fld.pretty_name + " - " + orig_fld.pretty_name
comp_beyond_limit = [False] * 3
for i, d in enumerate('xyz'):
abs_max_rel_diff = np.nanmax(np.abs(reldiff[d]))
max_crd_diff = np.max(orig_fld.get_crd(d) - cmp_fld.get_crd(d))
print("{0}{1}, max absolute relative diff: {2:.3e} ({1} crds: {3:.1e})"
"".format(cmp_fld.name, d, abs_max_rel_diff, max_crd_diff))
if abs_max_rel_diff > rtol or abs(max_crd_diff) > catol:
comp_beyond_limit[i] = True
# plot differences?
if make_plots:
plt.clf()
ax1 = plt.subplot(311)
vlt.plot(orig_fld[d]['y=0j'], symmetric=True, earth=True)
plt.subplot(312, sharex=ax1, sharey=ax1)
vlt.plot(cmp_fld[d]['y=0j'], symmetric=True, earth=True)
plt.subplot(313, sharex=ax1, sharey=ax1)
vlt.plot(reldiff[d]['y=0j'], symmetric=True, earth=True)
vlt.show()
def main():
f = viscid.load_file("~/dev/work/tmedium/*.3d.[-1].xdmf")
grid = f.get_grid()
gslc = "x=-26f:12.5f, y=-15f:15f, z=-15f:15f"
# gslc = "x=-12.5f:26f, y=-15f:15f, z=-15f:15f"
b_cc = f['b_cc'][gslc]
b_cc.name = "b_cc"
b_fc = f['b_fc'][gslc]
b_fc.name = "b_fc"
e_cc = f['e_cc'][gslc]
e_cc.name = "e_cc"
e_ec = f['e_ec'][gslc]
e_ec.name = "e_ec"
pp = f['pp'][gslc]
pp.name = 'pp'
pargs = dict(logscale=True, earth=True)
# vlt.clf()
# ax1 = vlt.subplot(211)
# vlt.plot(f['pp']['y=0f'], **pargs)
# # vlt.plot(viscid.magnitude(f['b_cc']['y=0f']), **pargs)
# # vlt.show()
# vlt.subplot(212, sharex=ax1, sharey=ax1)
# vlt.plot(viscid.magnitude(viscid.fc2cc(f['b_fc'])['y=0f']), **pargs)
# vlt.show()
basename = './tmediumR.3d.{0:06d}'.format(int(grid.time))
viscid.save_fields(basename + '.h5', [b_cc, b_fc, e_cc, e_ec, pp])
f2 = viscid.load_file(basename + ".xdmf")
pargs = dict(logscale=True, earth=True)
vlt.clf()
ax1 = vlt.subplot(211)
vlt.plot(f2['pp']['y=0f'], style='contour', levels=5, colorbar=None,
colors='k', **pargs)
vlt.plot(viscid.magnitude(f2['b_cc']['y=0f']), **pargs)
vlt.subplot(212, sharex=ax1, sharey=ax1)
vlt.plot(viscid.magnitude(viscid.fc2cc(f2['b_fc'])['y=0f']), **pargs)
vlt.show()
os.remove(basename + '.h5')
os.remove(basename + '.xdmf')
return 0
def main():
f = viscid.load_file("~/dev/work/tmedium/*.3d.[-1].xdmf")
grid = f.get_grid()
gslc = "x=-26j:12.5j, y=-15j:15j, z=-15j:15j"
# gslc = "x=-12.5j:26j, y=-15j:15j, z=-15j:15j"
b_cc = f['b_cc'][gslc]
b_cc.name = "b_cc"
b_fc = f['b_fc'][gslc]
b_fc.name = "b_fc"
e_cc = f['e_cc'][gslc]
e_cc.name = "e_cc"
e_ec = f['e_ec'][gslc]
e_ec.name = "e_ec"
pp = f['pp'][gslc]
pp.name = 'pp'
pargs = dict(logscale=True, earth=True)
# vlt.clf()
# ax1 = vlt.subplot(211)
# vlt.plot(f['pp']['y=0j'], **pargs)
# # vlt.plot(viscid.magnitude(f['b_cc']['y=0j']), **pargs)
# # vlt.show()
# vlt.subplot(212, sharex=ax1, sharey=ax1)
# vlt.plot(viscid.magnitude(viscid.fc2cc(f['b_fc'])['y=0j']), **pargs)
# vlt.show()
basename = './tmediumR.3d.{0:06d}'.format(int(grid.time))
viscid.save_fields(basename + '.h5', [b_cc, b_fc, e_cc, e_ec, pp])
f2 = viscid.load_file(basename + ".xdmf")
pargs = dict(logscale=True, earth=True)
vlt.clf()
ax1 = vlt.subplot(211)
vlt.plot(f2['pp']['y=0j'], style='contour', levels=5, colorbar=None,
colors='k', **pargs)
vlt.plot(viscid.magnitude(f2['b_cc']['y=0j']), **pargs)
vlt.subplot(212, sharex=ax1, sharey=ax1)
vlt.plot(viscid.magnitude(viscid.fc2cc(f2['b_fc'])['y=0j']), **pargs)
vlt.show()
os.remove(basename + '.h5')
os.remove(basename + '.xdmf')
return 0
def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--show", "--plot", action="store_true")
args = vutil.common_argparse(parser)
####### test binary files
f_bin = viscid.load_file(os.path.join(sample_dir, 'ath_sample.*.bin'))
for i, grid in enumerate(f_bin.iter_times(":")):
plt.subplot2grid((2, 2), (0, i))
vlt.plot(grid['bx'])
plt.subplot2grid((2, 2), (1, i))
vlt.plot(grid['by'])
plt.suptitle("athena bin (binary) files")
vlt.auto_adjust_subplots(subplot_params=dict(top=0.9))
plt.savefig(next_plot_fname(__file__))
if args.show:
vlt.show()
plt.clf()
####### test ascii files
f_tab = viscid.load_file(os.path.join(sample_dir, 'ath_sample.*.tab'))
for i, grid in enumerate(f_tab.iter_times(":")):
plt.subplot2grid((2, 2), (0, i))
vlt.plot(grid['bx'])
plt.subplot2grid((2, 2), (1, i))
vlt.plot(grid['by'])
plt.suptitle("athena tab (ascii) files")
vlt.auto_adjust_subplots(subplot_params=dict(top=0.9))
plt.savefig(next_plot_fname(__file__))
if args.show:
vlt.show()
plt.clf()
return 0
def run_test_3d(f, main__file__, show=False):
vlt.clf()
slc = "x=-20j:12j, y=0j"
plot_kwargs = dict(title=True, earth=True)
vlt.subplot(141)
vlt.plot(f['pp'], slc, logscale=True, **plot_kwargs)
vlt.subplot(142)
vlt.plot(viscid.magnitude(f['bcc']), slc, logscale=True, **plot_kwargs)
vlt.plot2d_quiver(f['v'][slc], step=5, color='y', pivot='mid', width=0.03,
scale=600)
vlt.subplot(143)
vlt.plot(f['jy'], slc, clim=(-0.005, 0.005), **plot_kwargs)
vlt.streamplot(f['v'][slc], linewidth=0.3)
vlt.subplot(144)
vlt.plot(f['jy'], "x=7j:12j, y=0j, z=0j")
plt.suptitle("3D File")
vlt.auto_adjust_subplots(subplot_params=dict(top=0.9, wspace=1.3))
plt.gcf().set_size_inches(10, 4)
vlt.savefig(next_plot_fname(main__file__))
if show:
vlt.show()
def run_mpl_testA(show=False):
logger.info("2D cell centered tests")
x = np.array(np.linspace(-10, 10, 100), dtype=dtype)
y = np.array(np.linspace(-10, 10, 120), dtype=dtype)
z = np.array(np.linspace(-1, 1, 2), dtype=dtype)
fld_s = viscid.empty([x, y, z], center='cell')
Xcc, Ycc, Zcc = fld_s.get_crds_cc(shaped=True) # pylint: disable=unused-variable
fld_s[:, :, :] = np.sin(Xcc) + np.cos(Ycc)
nrows = 4
ncols = 1
plt.subplot2grid((nrows, ncols), (0, 0))
vlt.plot(fld_s, "y=20f", show=False, plot_opts="lin_0")
plt.subplot2grid((nrows, ncols), (1, 0))
vlt.plot(fld_s,
"x=0f:20f,y=0f:5f",
earth=True,
show=False,
plot_opts="x_-10_0,y_0_7")
plt.subplot2grid((nrows, ncols), (2, 0))
vlt.plot(fld_s, "y=0f", show=False, plot_opts="lin_-1_1")
plt.subplot2grid((nrows, ncols), (3, 0))
vlt.plot(fld_s,
"z=0f,x=-20f:0f",
earth=True,
show=False,
plot_opts="lin_-5_5")
plt.suptitle("2d cell centered")
vlt.auto_adjust_subplots()
plt.savefig(next_plot_fname(__file__))
if show:
vlt.mplshow()
def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--show", "--plot", action="store_true")
parser.add_argument("--keep", action="store_true")
args = vutil.common_argparse(parser)
# setup a simple force free field
x = np.linspace(-2, 2, 20)
y = np.linspace(-2.5, 2.5, 25)
z = np.linspace(-3, 3, 30)
psi = viscid.empty([x, y, z], name='psi', center='node')
b = viscid.empty([x, y, z],
nr_comps=3,
name='b',
center='cell',
layout='interlaced')
X, Y, Z = psi.get_crds_nc("xyz", shaped=True)
Xcc, Ycc, Zcc = psi.get_crds_cc("xyz", shaped=True)
psi[:, :, :] = 0.5 * (X**2 + Y**2 - Z**2)
b['x'] = Xcc
b['y'] = Ycc
b['z'] = -Zcc
# save an hdf5 file with companion xdmf file
h5_fname = os.path.join(viscid.sample_dir, "test.h5")
viscid.save_fields(h5_fname, [psi, b])
# load the companion xdmf file
xdmf_fname = h5_fname[:-3] + ".xdmf"
f = viscid.load_file(xdmf_fname)
plt.subplot(131)
vlt.plot(f['psi'], "y=0")
plt.subplot(132)
vlt.plot(f['b'].component_fields()[0], "y=0")
plt.subplot(133)
vlt.plot(f['b'].component_fields()[2], "y=0")
plt.savefig(next_plot_fname(__file__))
if args.show:
plt.show()
if not args.keep:
os.remove(h5_fname)
os.remove(xdmf_fname)
return 0
def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--show", "--plot", action="store_true")
args = vutil.common_argparse(parser)
####### test binary files
f_bin = viscid.load_file(os.path.join(sample_dir, 'ath_sample.*.bin'))
_, axes = plt.subplots(2, 2)
for i, grid in enumerate(f_bin.iter_times(":")):
vlt.plot(grid['bx'], ax=axes[0, i])
vlt.plot(grid['by'], ax=axes[1, i])
plt.suptitle("athena bin (binary) files")
vlt.auto_adjust_subplots(subplot_params=dict(top=0.9))
plt.savefig(next_plot_fname(__file__))
if args.show:
vlt.show()
plt.close()
####### test ascii files
f_tab = viscid.load_file(os.path.join(sample_dir, 'ath_sample.*.tab'))
_, axes = plt.subplots(2, 2)
for i, grid in enumerate(f_tab.iter_times(":")):
vlt.plot(grid['bx'], ax=axes[0, i])
vlt.plot(grid['by'], ax=axes[1, i])
plt.suptitle("athena tab (ascii) files")
vlt.auto_adjust_subplots(subplot_params=dict(top=0.9))
plt.savefig(next_plot_fname(__file__))
if args.show:
vlt.show()
plt.close()
return 0
def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--show", "--plot", action="store_true")
parser.add_argument("--keep", action="store_true")
args = vutil.common_argparse(parser)
# setup a simple force free field
x = np.linspace(-2, 2, 20)
y = np.linspace(-2.5, 2.5, 25)
z = np.linspace(-3, 3, 30)
psi = viscid.empty([x, y, z], name='psi', center='node')
b = viscid.empty([x, y, z], nr_comps=3, name='b', center='cell',
layout='interlaced')
X, Y, Z = psi.get_crds_nc("xyz", shaped=True)
Xcc, Ycc, Zcc = psi.get_crds_cc("xyz", shaped=True)
psi[:, :, :] = 0.5 * (X**2 + Y**2 - Z**2)
b['x'] = Xcc
b['y'] = Ycc
b['z'] = -Zcc
# save an hdf5 file with companion xdmf file
h5_fname = os.path.join(".", "test.h5")
viscid.save_fields(h5_fname, [psi, b])
# load the companion xdmf file
xdmf_fname = h5_fname[:-3] + ".xdmf"
f = viscid.load_file(xdmf_fname)
plt.subplot(131)
vlt.plot(f['psi'], "y=0")
plt.subplot(132)
vlt.plot(f['b'].component_fields()[0], "y=0")
plt.subplot(133)
vlt.plot(f['b'].component_fields()[2], "y=0")
plt.savefig(next_plot_fname(__file__))
if args.show:
plt.show()
if not args.keep:
os.remove(h5_fname)
os.remove(xdmf_fname)
return 0
def compare_vectors(cc_fld,
ecfc_fld,
to_cc_fn,
catol=1e-8,
rtol=2.2e-6,
trim_slc=':',
bnd=True,
make_plots=False):
trimmed = cc_fld[trim_slc]
cc = to_cc_fn(ecfc_fld, bnd=bnd)
reldiff = (cc - trimmed) / viscid.magnitude(trimmed)
reldiff = reldiff["x=1:-1, y=1:-1, z=1:-1"]
reldiff.name = cc.name + " - " + trimmed.name
reldiff.pretty_name = cc.pretty_name + " - " + trimmed.pretty_name
comp_beyond_limit = [False] * 3
for i, d in enumerate('xyz'):
abs_max_rel_diff = np.nanmax(np.abs(reldiff[d]))
# trim first and last when diffing crds since they're extrapolated
# in the ecfc field, so we already know they won't match up do dx
max_crd_diff = np.max((trimmed.get_crd(d) - cc.get_crd(d))[1:-1])
print("{0}{1}, max absolute relative diff: {2:.3e} ({1} crds: {3:.1e})"
"".format(cc_fld.name, d, abs_max_rel_diff, max_crd_diff))
if abs_max_rel_diff > rtol or abs(max_crd_diff) > catol:
comp_beyond_limit[i] = True
# plot differences?
if make_plots:
ax1 = plt.subplot(311)
vlt.plot(cc_fld[d]['y=0f'], symmetric=True, earth=True)
plt.subplot(312, sharex=ax1, sharey=ax1)
vlt.plot(cc[d]['y=0f'], symmetric=True, earth=True)
plt.subplot(313, sharex=ax1, sharey=ax1)
vlt.plot(reldiff[d]['y=0f'], symmetric=True, earth=True)
vlt.show()
if any(comp_beyond_limit):
raise RuntimeError("Tolerance exceeded on ->CC accuracy")
def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--notwo", dest='notwo', action="store_true")
parser.add_argument("--nothree", dest='nothree', action="store_true")
parser.add_argument("--show", "--plot", action="store_true")
args = viscid.vutil.common_argparse(parser, default_verb=0)
plot2d = not args.notwo
plot3d = not args.nothree
# plot2d = True
# plot3d = True
# args.show = True
img = np.load(os.path.join(sample_dir, "logo.npy"))
x = np.linspace(-1, 1, img.shape[0])
y = np.linspace(-1, 1, img.shape[1])
z = np.linspace(-1, 1, img.shape[2])
logo = viscid.arrays2field([x, y, z], img)
if 1:
viscid.logger.info('Testing Point with custom local coordinates...')
pts = np.vstack([[-1, -0.5, 0, 0.5, 1],
[-1, -0.5, 0, 0.5, 1],
[ 0, 0.5, 1, 1.5, 2]])
local_crds = viscid.asarray_datetime64([0, 60, 120, 180, 240],
conservative=True)
seeds = viscid.Point(pts, local_crds=local_crds)
run_test(logo, seeds, plot2d=plot2d, plot3d=plot3d, show=args.show)
if 1:
viscid.logger.info('Testing Line...')
seeds = viscid.Line([-1, -1, 0], [1, 1, 2], n=5)
run_test(logo, seeds, plot2d=plot2d, plot3d=plot3d, show=args.show)
if 1:
viscid.logger.info('Testing Plane...')
seeds = viscid.Plane([0.0, 0.0, 0.0], [1, 1, 1], [1, 0, 0], 2, 2,
nl=160, nm=170, NL_are_vectors=True)
run_test(logo, seeds, plot2d=plot2d, plot3d=plot3d, show=args.show)
if 1:
viscid.logger.info('Testing Volume...')
seeds = viscid.Volume([-0.8, -0.8, -0.8], [0.8, 0.8, 0.8],
n=[64, 64, 3])
# note: can't make a 2d plot of the volume w/o a slice
run_test(logo, seeds, plot2d=False, plot3d=plot3d, add_title="3d",
show=args.show)
if 1:
viscid.logger.info('Testing Volume (with ignorable dim)...')
seeds = viscid.Volume([-0.8, -0.8, 0.0], [0.8, 0.8, 0.0],
n=[64, 64, 1])
run_test(logo, seeds, plot2d=plot2d, plot3d=plot3d, add_title="2d",
show=args.show)
if 1:
viscid.logger.info('Testing Spherical Sphere (phi, theta)...')
seeds = viscid.Sphere([0, 0, 0], r=1.0, ntheta=160, nphi=170,
pole=[-1, -1, -1], theta_phi=False)
run_test(logo, seeds, plot2d=plot2d, plot3d=plot3d, add_title="PT",
show=args.show)
if 1:
viscid.logger.info('Testing Spherical Sphere (theta, phi)...')
seeds = viscid.Sphere([0, 0, 0], r=1.0, ntheta=160, nphi=170,
pole=[-1, -1, -1], theta_phi=True)
run_test(logo, seeds, plot2d=plot2d, plot3d=plot3d, add_title="TP",
show=args.show)
if 1:
viscid.logger.info('Testing Spherical Cap (phi, theta)...')
seeds = viscid.SphericalCap(p0=[0, 0, 0], r=1.0, ntheta=64, nphi=80,
pole=[-1, -1, -1], theta_phi=False)
run_test(logo, seeds, plot2d=plot2d, plot3d=plot3d, add_title="PT",
view_kwargs=dict(azimuth=180, elevation=180), show=args.show)
if 1:
viscid.logger.info('Testing Spherical Cap (theta, phi)...')
seeds = viscid.SphericalCap(p0=[0, 0, 0], r=1.0, ntheta=64, nphi=80,
pole=[-1, -1, -1], theta_phi=True)
run_test(logo, seeds, plot2d=plot2d, plot3d=plot3d, add_title="TP",
view_kwargs=dict(azimuth=180, elevation=180), show=args.show)
if 1:
viscid.logger.info('Testing Spherical Patch...')
seeds = viscid.SphericalPatch(p0=[0, 0, 0], p1=[0, -0, -1],
max_alpha=30.0, max_beta=59.9,
nalpha=65, nbeta=80, r=0.5, roll=45.0)
run_test(logo, seeds, plot2d=plot2d, plot3d=plot3d, show=args.show)
if 1:
# this spline test is very custom
viscid.logger.info('Testing Spline...')
try:
import scipy.interpolate as interpolate
except ImportError:
msg = "XFail: ImportError (is scipy installed?)"
if plot2d:
try:
from viscid.plot import vpyplot as vlt
from matplotlib import pyplot as plt
plt.clf()
plt.annotate(msg, xy=(0.3, 0.4), xycoords='axes fraction')
plt.savefig(next_plot_fname(__file__, series='2d'))
plt.savefig(next_plot_fname(__file__, series='2d'))
plt.savefig(next_plot_fname(__file__, series='3d'))
if args.show:
plt.show()
except ImportError:
pass
else:
knots = np.array([[ 0.2, 0.5, 0.0], [-0.2, 0.5, 0.2],
[-0.2, 0.0, 0.4], [ 0.2, 0.0, 0.2],
[ 0.2, -0.5, 0.0], [-0.2, -0.5, 0.2]]).T
seed_name = "Spline"
fld = logo
seeds = viscid.Spline(knots)
seed_pts = seeds.get_points()
interp_fld = viscid.interp_trilin(fld, seeds)
if plot2d:
try:
from viscid.plot import vpyplot as vlt
from matplotlib import pyplot as plt
plt.clf()
vlt.plot(interp_fld)
plt.title(seed_name)
plt.savefig(next_plot_fname(__file__, series='2d'))
if args.show:
plt.show()
plt.clf()
from matplotlib import rcParams
_ms = rcParams['lines.markersize']
plt.gca().scatter(knots[0, :], knots[1, :],
s=(2 * _ms)**2, marker='^', color='y')
plt.gca().scatter(seed_pts[0, :], seed_pts[1, :],
s=(1.5 * _ms)**2, marker='o', color='k')
vlt.plot2d_line(seed_pts, scalars=interp_fld.flat_data,
symdir='z')
plt.title(seed_name)
plt.savefig(next_plot_fname(__file__, series='2d'))
if args.show:
plt.show()
except ImportError:
pass
if plot3d:
try:
from viscid.plot import vlab
_ = get_mvi_fig(offscreen=not args.show)
vlab.points3d(knots[0], knots[1], knots[2],
color=(1.0, 1.0, 0), scale_mode='none',
scale_factor=0.04)
p = vlab.points3d(seed_pts[0], seed_pts[1], seed_pts[2],
color=(0, 0, 0), scale_mode='none',
scale_factor=0.03)
vlab.plot_line(seed_pts, scalars=interp_fld.flat_data,
tube_radius=0.01)
vlab.axes(p)
vlab.title(seed_name)
vlab.mlab.roll(-90.0)
vlab.savefig(next_plot_fname(__file__, series='3d'))
if args.show:
vlab.show(stop=True)
except ImportError:
pass
if 1:
viscid.logger.info('Testing RectilinearMeshPoints...')
f = viscid.load_file(os.path.join(sample_dir, 'sample_xdmf.3d.[-1].xdmf'))
slc = 'x=-40j:12j, y=-10j:10j, z=-10j:10j'
b = f['b'][slc]
z = b.get_crd('z')
sheet_iz = np.argmin(b['x']**2, axis=2)
sheet_pts = b['z=0:1'].get_points()
sheet_pts[2, :] = z[sheet_iz].reshape(-1)
isphere_mask = np.sum(sheet_pts[:2, :]**2, axis=0) < 5**2
day_mask = sheet_pts[0:1, :] > -1.0
sheet_pts[2, :] = np.choose(isphere_mask, [sheet_pts[2, :], 0])
sheet_pts[2, :] = np.choose(day_mask, [sheet_pts[2, :], 0])
nx, ny, _ = b.sshape
sheet_seed = viscid.RectilinearMeshPoints(sheet_pts.reshape(3, nx, ny))
vx_sheet = viscid.interp_nearest(f['vx'], sheet_seed)
try:
if not plot2d:
raise ImportError
from viscid.plot import vpyplot as vlt
from matplotlib import pyplot as plt
vlt.clf()
vlt.plot(vx_sheet, symmetric=True)
plt.savefig(next_plot_fname(__file__, series='2d'))
if args.show:
vlt.show()
except ImportError:
pass
try:
if not plot3d:
raise ImportError
from viscid.plot import vlab
_ = get_mvi_fig(offscreen=not args.show)
mesh = vlab.mesh_from_seeds(sheet_seed, scalars=vx_sheet,
clim=(-400, 400))
vlab.plot_earth_3d(crd_system=b)
vlab.view(azimuth=+90.0 + 45.0, elevation=90.0 - 25.0,
distance=30.0, focalpoint=(-10.0, +1.0, +1.0))
vlab.title("RectilinearMeshPoints")
vlab.savefig(next_plot_fname(__file__, series='3d'))
if args.show:
vlab.show(stop=True)
except ImportError:
pass
# prevent weird xorg bad-instructions on tear down
if 'figure' in _global_ns and _global_ns['figure'] is not None:
from viscid.plot import vlab
vlab.mlab.close(_global_ns['figure'])
return 0
def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--prof", action="store_true")
parser.add_argument("--show", "--plot", action="store_true")
args = vutil.common_argparse(parser)
b = viscid.make_dipole(l=(-5, -5, -5), h=(5, 5, 5), n=(255, 255, 127),
m=(0, 0, -1))
b2 = np.sum(b * b, axis=b.nr_comp)
if args.prof:
print("Without boundaries")
viscid.timeit(viscid.grad, b2, bnd=False, timeit_repeat=10,
timeit_print_stats=True)
print("With boundaries")
viscid.timeit(viscid.grad, b2, bnd=True, timeit_repeat=10,
timeit_print_stats=True)
grad_b2 = viscid.grad(b2)
grad_b2.pretty_name = r"$\nabla$ B$^2$"
conv = viscid.convective_deriv(b)
conv.pretty_name = r"(B $\cdot \nabla$) B"
_ = plt.figure(figsize=(9, 4.2))
ax1 = vlt.subplot(231)
vlt.plot(b2['z=0j'], logscale=True)
vlt.plot(b2['z=0j'], logscale=True, style='contour', levels=10, colors='grey')
# vlt.plot2d_quiver(viscid.normalize(b['z=0j']), step=16, pivot='mid')
ax2 = vlt.subplot(234)
vlt.plot(b2['y=0j'], logscale=True)
vlt.plot(b2['y=0j'], logscale=True, style='contour', levels=10, colors='grey')
vlt.plot2d_quiver(viscid.normalize(b['y=0j'], preferred='numpy'),
step=16, pivot='mid')
vlt.subplot(232, sharex=ax1, sharey=ax1)
vlt.plot(1e-4 + viscid.magnitude(grad_b2['z=0j']), logscale=True)
vlt.plot(1e-4 + viscid.magnitude(grad_b2['z=0j']), logscale=True,
style='contour', levels=10, colors='grey')
vlt.plot2d_quiver(viscid.normalize(grad_b2['z=0j']), step=16, pivot='mid')
vlt.subplot(235, sharex=ax2, sharey=ax2)
vlt.plot(1e-4 + viscid.magnitude(grad_b2['y=0j']), logscale=True)
vlt.plot(1e-4 + viscid.magnitude(grad_b2['y=0j']), logscale=True,
style='contour', levels=10, colors='grey')
vlt.plot2d_quiver(viscid.normalize(grad_b2['y=0j']), step=16, pivot='mid')
vlt.subplot(233, sharex=ax1, sharey=ax1)
vlt.plot(viscid.magnitude(conv['z=0j']), logscale=True)
vlt.plot(viscid.magnitude(conv['z=0j']), logscale=True,
style='contour', levels=10, colors='grey')
vlt.plot2d_quiver(viscid.normalize(conv['z=0j']), step=16, pivot='mid')
vlt.subplot(236, sharex=ax2, sharey=ax2)
vlt.plot(viscid.magnitude(conv['y=0j']), logscale=True)
vlt.plot(viscid.magnitude(conv['y=0j']), logscale=True,
style='contour', levels=10, colors='grey')
vlt.plot2d_quiver(viscid.normalize(conv['y=0j']), step=16, pivot='mid')
vlt.auto_adjust_subplots()
plt.savefig(next_plot_fname(__file__))
if args.show:
vlt.show()
return 0
def apply_labels(labels=None,
colors=None,
ax=None,
magnet=(0.5, 0.75),
magnetcoords="axes fraction",
padding=None,
paddingcoords="offset points",
choices="00:02:20:22",
n_candidates=32,
ignore_filling=False,
spacing='linear',
_debug=False,
**kwargs):
"""Apply labels directly to series in liu of a legend
The `choices` offsets are as follows::
---------------------
| 02 | 12 | 22 |
|-------------------|
| 01 | XX | 21 |
|-------------------|
| 00 | 10 | 20 |
---------------------
Args:
labels (sequence): Optional sequence of labels to override the
labels already in the data series
colors (str, sequence): color as hex string, list of hex
strings to color each label, or an Nx4 ndarray of rgba
values for N labels
ax (matplotlib.axis): axis; defaults to `plt.gca()`
magnet (tuple): prefer positions that are closer to the magnet
magnetcoords (str): 'offset pixels', 'offset points' or 'axes fraction'
padding (tuple): padding for text in the (x, y) directions
paddingcoords (str): 'offset pixels', 'offset points' or 'axes fraction'
choices (str): colon separated list of possible label positions
relative to the data values. The positions are summarized
above.
alpha (float): alpha channel (opacity) of label text. Defaults
to 1.0 to make text visible. Set to `None` to use the
underlying alpha from the handle's color.
n_candidates (int): number of potential label locations to
consider for each data series.
ignore_filling (bool): if True, then assume it's ok to place
labels inside paths that are filled with color
spacing (str): one of 'linear' or 'random' to specify how far
apart candidate locations are spaced along path segments
_debug (bool): Mark up all possible label locations
**kwargs: passed to plt.annotate
Returns:
List: annotation objects
"""
if not ax:
ax = plt.gca()
if isinstance(colors, (list, tuple)):
pass
spacing = spacing.strip().lower()
if spacing not in ('linear', 'random'):
raise ValueError("Spacing '{0}' not understood".format(spacing))
rand_state = np.random.get_state() if spacing == 'random' else None
if rand_state is not None:
# save the RNG state to restore it later so that plotting functions
# don't change the results of scripts that use random numbers
np.random.seed(1)
_xl, _xh = ax.get_xlim()
_yl, _yh = ax.get_ylim()
axbb0 = np.array([_xl, _yl]).reshape(1, 2)
axbb1 = np.array([_xh, _yh]).reshape(1, 2)
# choices:: "01:02:22" -> [(0, 1), (0, 2), (2, 2)]
choices = [(int(c[0]), int(c[1])) for c in choices.split(':')]
_size = kwargs.get('fontsize', kwargs.get('size', None))
_fontproperties = kwargs.get('fontproperties', None)
font_size_pts = text_size_points(size=_size,
fontproperties=_fontproperties)
# set the default padding equal to the font size
if paddingcoords == 'offset pixels':
default_padding = font_size_pts * 72 / ax.figure.dpi
elif paddingcoords == 'offset points':
default_padding = font_size_pts
elif paddingcoords == 'axes fraction':
default_padding = 0.05
else:
raise ValueError("Bad padding coords '{0}'".format(paddingcoords))
# print("fontsize pt:", font_size_pts,
# "fontsize px:", xy_as_pixels([font_size_pts, font_size_pts],
# 'offset points')[0])
if not isinstance(padding, (list, tuple)):
padding = [padding, padding]
padding = [default_padding if pd is None else pd for pd in padding]
# print("padding::", paddingcoords, padding)
magnet_px = xy_as_pixels(magnet, magnetcoords, ax=ax)
padding_px = xy_as_pixels(padding, paddingcoords, ax=ax)
# print("padding px::", padding_px)
annotations = []
cand_map = {}
for choice in choices:
cand_map[choice] = np.zeros([n_candidates, 2, 2], dtype='f')
# these paths are all the paths we can get our hands on so that the text
# doesn't overlap them. bboxes around labels are added as we go
paths_px = []
# here is a list of bounding boxes around the text boxes as we add them
bbox_paths_px = []
is_filled = []
## how many vertices to avoid ?
# artist
# collection
# image
# line
# patch
# table
# container
for line in ax.lines:
paths_px += [ax.transData.transform_path(line.get_path())]
is_filled += [False]
for collection in ax.collections:
for pth in collection.get_paths():
paths_px += [ax.transData.transform_path(pth)]
is_filled += [collection.get_fill()]
if ignore_filling:
is_filled = [False] * len(is_filled)
hands, hand_labels = ax.get_legend_handles_labels()
colors = _cycle_colors(colors, len(hands))
# >>> debug >>>
if _debug:
import viscid
from matplotlib import patches as mpatches
from viscid.plot import vpyplot as vlt
_fig_width = int(ax.figure.bbox.width)
_fig_height = int(ax.figure.bbox.height)
fig_fld = viscid.zeros((_fig_width, _fig_height),
dtype='f',
center='node')
_X, _Y = fig_fld.get_crds(shaped=True)
_axXL, _axYL, _axXH, _axYH = ax.bbox.extents
_mask = np.bitwise_and(np.bitwise_and(_X >= _axXL, _X <= _axXH),
np.bitwise_and(_Y >= _axYL, _Y <= _axYH))
fig_fld.data[_mask] = 1.0
dfig, dax = plt.subplots(1, 1, figsize=ax.figure.get_size_inches())
vlt.plot(fig_fld, ax=dax, cmap='ocean', colorbar=None)
for _, path in enumerate(paths_px):
dax.plot(path.vertices[:, 0], path.vertices[:, 1])
dfig.subplots_adjust(bottom=0.0, left=0.0, top=1.0, right=1.0)
else:
dfig, dax = None, None
# <<< debug <<<
for i, hand, label_i in zip(count(), hands, hand_labels):
if labels and i < len(labels):
label = labels[i]
else:
label = label_i
# divine color of label
if colors[i]:
color = colors[i]
else:
try:
color = hand.get_color()
except AttributeError:
color = hand.get_facecolor()[0]
# get path vertices to determine candidate label positions
try:
verts = hand.get_path().vertices
except AttributeError:
verts = [p.vertices for p in hand.get_paths()]
verts = np.concatenate(verts, axis=0)
segl_dat = verts[:-1, :]
segh_dat = verts[1:, :]
# take out path segments that have one vertex outside the view
_seg_mask = np.all(
np.bitwise_and(segl_dat >= axbb0, segl_dat <= axbb1)
& np.bitwise_and(segh_dat >= axbb0, segh_dat <= axbb1),
axis=1)
segl_dat = segl_dat[_seg_mask, :]
segh_dat = segh_dat[_seg_mask, :]
if np.prod(segl_dat.shape) == 0:
print("no full segments are visible, skipping path", i, hand)
continue
segl_px = ax.transData.transform(segl_dat)
segh_px = ax.transData.transform(segh_dat)
seglen_px = np.linalg.norm(segh_px - segl_px, axis=1)
# take out path segments that are 0 pixels in length
_non0_seg_mask = seglen_px > 0
segl_dat = segl_dat[_non0_seg_mask, :]
segh_dat = segh_dat[_non0_seg_mask, :]
segl_px = segl_px[_non0_seg_mask, :]
segh_px = segh_px[_non0_seg_mask, :]
seglen_px = seglen_px[_non0_seg_mask]
if np.prod(segl_dat.shape) == 0:
print("no non-0 segments are visible, skipping path", i, hand)
continue
# i deeply appologize for how convoluted this got, but the punchline
# is that each line segment gets candidates proportinal to their
# length in pixels on the figure
s_src = np.concatenate([[0], np.cumsum(seglen_px)])
if rand_state is not None:
s_dest = s_src[-1] * np.sort(np.random.rand(n_candidates))
else:
s_dest = np.linspace(0, s_src[-1], n_candidates)
_diff = s_dest.reshape(1, -1) - s_src.reshape(-1, 1)
iseg = np.argmin(np.ma.masked_where(_diff <= 0, _diff), axis=0)
frac = (s_dest - s_src[iseg]) / seglen_px[iseg]
root_dat = (segl_dat[iseg] + frac.reshape(-1, 1) *
(segh_dat[iseg] - segl_dat[iseg]))
root_px = ax.transData.transform(root_dat)
# estimate the width and height of the label's text
txt_size = np.array(
estimate_text_size_px(label, fig=ax.figure, size=font_size_pts))
txt_size = txt_size.reshape([1, 2])
# this initial offset is needed to shift the center of the label
# to the data point
offset0 = -txt_size / 2
# now we can shift the label away from the data point by an amount
# equal to half the text width/height + the padding
offset1 = padding_px + txt_size / 2
for key, abs_px_arr in cand_map.items():
ioff = np.array(key, dtype='i').reshape(1, 2) - 1
total_offset = offset0 + ioff * offset1
# approx lower left corner of the text box in absolute pixels
abs_px_arr[:, :, 0] = root_px + total_offset
# approx upper right corner of the text box in absolute pixels
abs_px_arr[:, :, 1] = abs_px_arr[:, :, 0] + txt_size
# candidates_abs_px[i] has root @ root_px[i % n_candidates]
candidates_abs_px = np.concatenate([cand_map[c] for c in choices],
axis=0)
# find how many other things each candidate overlaps
n_overlaps = np.zeros_like(candidates_abs_px[:, 0, 0])
for k, candidate in enumerate(candidates_abs_px):
cand_bbox = Bbox(candidate.T)
# penalty for each time a box overlaps a path that's already
# on the plot
for ipth, path in enumerate(paths_px):
if path.intersects_bbox(cand_bbox, filled=is_filled[ipth]):
n_overlaps[k] += 1
# slightly larger penalty if we intersect a text box that we
# just added to the plot
for ipth, path in enumerate(bbox_paths_px):
if path.intersects_bbox(cand_bbox, filled=is_filled[ipth]):
n_overlaps[k] += 5
# big penalty if the candidate is out of the current view
if not (ax.bbox.contains(*cand_bbox.min)
and ax.bbox.contains(*cand_bbox.max)):
n_overlaps[k] += 100
# sort candidates by distance between center of text box and magnet
magnet_dist = np.linalg.norm(np.mean(candidates_abs_px, axis=-1) -
magnet_px,
axis=1)
isorted = np.argsort(magnet_dist)
magnet_dist = np.array(magnet_dist[isorted])
candidates_abs_px = np.array(candidates_abs_px[isorted, :, :])
n_overlaps = np.array(n_overlaps[isorted])
root_dat = np.array(root_dat[isorted % n_candidates, :])
root_px = np.array(root_px[isorted % n_candidates, :])
# sort candidates so the ones with the fewest overlaps are first
# but do it with a stable algorithm so among the best candidates,
# choose the one closest to the magnet
sargs = np.argsort(n_overlaps, kind='mergesort')
# >>> debug >>>
if dax is not None:
for _candidate, n_overlap in zip(candidates_abs_px, n_overlaps):
_cand_bbox = Bbox(_candidate.T)
_x0 = _cand_bbox.get_points()[0]
_bbox_center = np.mean(_candidate, axis=-1)
_ray_x = [_bbox_center[0], magnet_px[0]]
_ray_y = [_bbox_center[1], magnet_px[1]]
dax.plot(_ray_x, _ray_y, '-', alpha=0.3, color='grey')
_rect = mpatches.Rectangle(_x0,
_cand_bbox.width,
_cand_bbox.height,
fill=False)
dax.add_patch(_rect)
plt.text(_x0[0], _x0[1], label, color='gray')
plt.text(_x0[0], _x0[1], '{0}'.format(n_overlap))
# <<< debug <<<
# pick winning candidate and add its bounding box to this list of
# paths to avoid
winner_abs_px = candidates_abs_px[sargs[0], :, :]
xy_root_px = root_px[sargs[0], :]
xy_root_dat = np.array(root_dat[sargs[0], :])
xy_txt_offset = np.array(winner_abs_px[:, 0] - xy_root_px)
corners = Bbox(winner_abs_px.T).corners()[(0, 1, 3, 2), :]
bbox_paths_px += [Path(corners)]
# a = plt.annotate(label, xy=xy_root_dat, xycoords='data',
# xytext=xy_txt_offset, textcoords="offset pixels",
# color=color, **kwargs)
a = ax.annotate(label,
xy=xy_root_dat,
xycoords='data',
xytext=xy_txt_offset,
textcoords="offset pixels",
color=color,
**kwargs)
annotations.append(a)
if rand_state is not None:
np.random.set_state(rand_state)
return annotations
# run eval
fld = eval(salted_eqn, {"__builtins__": {}}, local_dict) # pylint: disable=eval-used
try:
fld.name = result_name
fld.pretty_name = result_name
except AttributeError:
pass
return fld
if __name__ == "__main__":
import os
import viscid
from viscid.plot import vpyplot as vlt
import matplotlib.pyplot as plt
enabled = True
_d = os.path.dirname(viscid.__file__)
_g = viscid.load_file(_d + "/../sample/sample.py_0.xdmf").get_grid()
plt.subplot(211)
_fld = evaluate(_g, "speed", "sqrt(vx**2 + vy**2 + sqrt(vz**4))")
vlt.plot(_fld, show=False)
plt.subplot(212)
_fld = evaluate(_g, "speed", "sqrt(vx**2 + vy**2 + sqrt(vz**4))",
try_numexpr=False)
vlt.plot(_fld, show=True)
##
## EOF
##
def main():
mhd_type = "C"
make_plots = 1
mhd_type = mhd_type.upper()
if mhd_type.startswith("C"):
if mhd_type in ("C",):
f = viscid.load_file("$WORK/tmedium/*.3d.[-1].xdmf")
elif mhd_type in ("C2", "C3"):
f = viscid.load_file("$WORK/tmedium2/*.3d.[-1].xdmf")
else:
raise ValueError()
catol = 1e-8
rtol = 2e-6
elif mhd_type in ("F", "FORTRAN"):
f = viscid.load_file("$WORK/tmedium3/*.3df.[-1]")
catol = 1e-8
rtol = 7e-2
else:
raise ValueError()
do_fill_dipole = True
gslc = "x=-21.2j:12j, y=-11j:11j, z=-11j:11j"
b = f['b_cc'][gslc]
b1 = f['b_fc'][gslc]
e_cc = f['e_cc'][gslc]
e_ec = f['e_ec'][gslc]
if do_fill_dipole:
mask = viscid.make_spherical_mask(b, rmax=3.5)
viscid.fill_dipole(b, mask=mask)
mask = viscid.make_spherical_mask(b1, rmax=3.5)
viscid.fill_dipole(b1, mask=mask)
mask = None
# seeds = viscid.SphericalCap(r=1.02, ntheta=64, nphi=32, angle0=17, angle=20,
# philim=(100, 260), roll=-180.0)
# seeds = viscid.SphericalCap(r=1.02, ntheta=64, nphi=32, angle0=17, angle=20,
# philim=(0, 10), roll=0.0)
seedsN = viscid.Sphere(r=1.02, ntheta=16, nphi=16, thetalim=(15, 25),
philim=(0, 300), crd_system=b)
seedsS = viscid.Sphere(r=1.02, ntheta=16, nphi=16, thetalim=(155, 165),
philim=(0, 300), crd_system=b)
bl_kwargs = dict(ibound=0.9, obound0=(-20, -10, -10), obound1=(11, 10, 10))
# blines_cc, topo_cc = viscid.streamlines(b, seeds, **bl_kwargs)
blinesN_fc, topoN_fc = viscid.streamlines(b1, seedsN, **bl_kwargs)
_, topoS_fc = viscid.streamlines(b1, seedsS, output=viscid.OUTPUT_TOPOLOGY,
**bl_kwargs)
if True:
from viscid.plot import vlab
mesh = vlab.mesh_from_seeds(seedsN, scalars=topoN_fc)
mesh.actor.property.backface_culling = True
# vlab.plot_lines(blines_cc, scalars="#000000", tube_radius=0.03)
vlab.plot_lines(blinesN_fc, scalars=viscid.topology2color(topoN_fc),
opacity=0.7)
vlab.plot_blue_marble(r=1.0)
vlab.plot_earth_3d(radius=1.01, crd_system=b, night_only=True,
opacity=0.5)
vlab.show()
if True:
vlt.subplot(121, projection='polar')
vlt.plot(topoN_fc)
vlt.subplot(122, projection='polar')
vlt.plot(topoS_fc)
vlt.show()
return 0
def main():
xl, xh, nx = -1.0, 1.0, 41
yl, yh, ny = -1.5, 1.5, 41
zl, zh, nz = -2.0, 2.0, 41
x = np.linspace(xl, xh, nx)
y = np.linspace(yl, yh, ny)
z = np.linspace(zl, zh, nz)
crds = coordinate.wrap_crds("nonuniform_cartesian",
[('z', z), ('y', y), ('x', x)])
bx = field.empty(crds, name="$B_x$", center="Node")
by = field.empty(crds, name="$B_y$", center="Node")
bz = field.empty(crds, name="$B_z$", center="Node")
fld = field.empty(crds, name="B", nr_comps=3, center="Node",
layout="interlaced")
X, Y, Z = crds.get_crds(shaped=True)
x01, y01, z01 = 0.5, 0.5, 0.5
x02, y02, z02 = 0.5, 0.5, 0.5
x03, y03, z03 = 0.5, 0.5, 0.5
bx[:] = 0.0 + 1.0 * (X - x01) + 1.0 * (Y - y01) + 1.0 * (Z - z01) + \
1.0 * (X - x01) * (Y - y01) + 1.0 * (Y - y01) * (Z - z01) + \
1.0 * (X - x01) * (Y - y01) * (Z - z01)
by[:] = 0.0 + 1.0 * (X - x02) - 1.0 * (Y - y02) + 1.0 * (Z - z02) + \
1.0 * (X - x02) * (Y - y02) + 1.0 * (Y - y02) * (Z - z02) - \
1.0 * (X - x02) * (Y - y02) * (Z - z02)
bz[:] = 0.0 + 1.0 * (X - x03) + 1.0 * (Y - y03) - 1.0 * (Z - z03) + \
1.0 * (X - x03) * (Y - y03) + 1.0 * (Y - y03) * (Z - z03) + \
1.0 * (X - x03) * (Y - y03) * (Z - z03)
fld[..., 0] = bx
fld[..., 1] = by
fld[..., 2] = bz
fig = mlab.figure(size=(1150, 850),
bgcolor=(1.0, 1.0, 1.0),
fgcolor=(0.0, 0.0, 0.0))
f1_src = vlab.add_field(bx)
f2_src = vlab.add_field(by)
f3_src = vlab.add_field(bz)
mlab.pipeline.iso_surface(f1_src, contours=[0.0],
opacity=1.0, color=(1.0, 0.0, 0.0))
mlab.pipeline.iso_surface(f2_src, contours=[0.0],
opacity=1.0, color=(0.0, 1.0, 0.0))
mlab.pipeline.iso_surface(f3_src, contours=[0.0],
opacity=1.0, color=(0.0, 0.0, 1.0))
mlab.axes()
mlab.show()
nullpt = cycalc.interp_trilin(fld, [(0.5, 0.5, 0.5)])
print("f(0.5, 0.5, 0.5):", nullpt)
_, axes = plt.subplots(4, 3, sharex=True, sharey=True)
all_roots = []
positive_roots = []
ix = iy = iz = 0
for di, d in enumerate([0, -1]):
#### XY face
a1 = bx[iz + d, iy, ix]
b1 = bx[iz + d, iy, ix - 1] - a1
c1 = bx[iz + d, iy - 1, ix] - a1
d1 = bx[iz + d, iy - 1, ix - 1] - c1 - b1 - a1
a2 = by[iz + d, iy, ix]
b2 = by[iz + d, iy, ix - 1] - a2
c2 = by[iz + d, iy - 1, ix] - a2
d2 = by[iz + d, iy - 1, ix - 1] - c2 - b2 - a2
a3 = bz[iz + d, iy, ix]
b3 = bz[iz + d, iy, ix - 1] - a3
c3 = bz[iz + d, iy - 1, ix] - a3
d3 = bz[iz + d, iy - 1, ix - 1] - c3 - b3 - a3
roots1, roots2 = find_roots_face(a1, b1, c1, d1, a2, b2, c2, d2)
# for rt1, rt2 in zip(roots1, roots2):
# print("=")
# print("fx", a1 + b1 * rt1 + c1 * rt2 + d1 * rt1 * rt2)
# print("fy", a2 + b2 * rt1 + c2 * rt2 + d2 * rt1 * rt2)
# print("=")
# find f3 at the root points
f3 = np.empty_like(roots1)
markers = [None] * len(f3)
for i, rt1, rt2 in zip(count(), roots1, roots2):
f3[i] = a3 + b3 * rt1 + c3 * rt2 + d3 * rt1 * rt2
all_roots.append((rt1, rt2, d)) # switch order here
if f3[i] >= 0.0:
markers[i] = 'k^'
positive_roots.append((rt1, rt2, d)) # switch order here
else:
markers[i] = 'w^'
# rescale the roots to the original domain
roots1 = (xh - xl) * roots1 + xl
roots2 = (yh - yl) * roots2 + yl
xp = np.linspace(0.0, 1.0, nx)
vlt.plot(fld['x'], "z={0}i".format(d), ax=axes[0 + 2 * di, 0],
plot_opts="x={0}_{1},y={2}_{3},lin_-10_10".format(xl, xh, yl, yh))
y1 = - (a1 + b1 * xp) / (c1 + d1 * xp)
plt.plot(x, (yh - yl) * y1 + yl, 'k')
for i, xrt, yrt in zip(count(), roots1, roots2):
plt.plot(xrt, yrt, markers[i])
vlt.plot(fld['y'], "z={0}i".format(d), ax=axes[1 + 2 * di, 0],
plot_opts="x={0}_{1},y={2}_{3},lin_-10_10".format(xl, xh, yl, yh))
y2 = - (a2 + b2 * xp) / (c2 + d2 * xp)
plt.plot(x, (yh - yl) * y2 + yl, 'k')
for xrt, yrt in zip(roots1, roots2):
plt.plot(xrt, yrt, markers[i])
#### YZ face
a1 = bx[iz, iy, ix + d]
b1 = bx[iz, iy - 1, ix + d] - a1
c1 = bx[iz - 1, iy, ix + d] - a1
d1 = bx[iz - 1, iy - 1, ix + d] - c1 - b1 - a1
a2 = by[iz, iy, ix + d]
b2 = by[iz, iy - 1, ix + d] - a2
c2 = by[iz - 1, iy, ix + d] - a2
d2 = by[iz - 1, iy - 1, ix + d] - c2 - b2 - a2
a3 = bz[iz, iy, ix + d]
b3 = bz[iz, iy - 1, ix + d] - a3
c3 = bz[iz - 1, iy, ix + d] - a3
d3 = bz[iz - 1, iy - 1, ix + d] - c3 - b3 - a3
roots1, roots2 = find_roots_face(a1, b1, c1, d1, a2, b2, c2, d2)
# for rt1, rt2 in zip(roots1, roots2):
# print("=")
# print("fx", a1 + b1 * rt1 + c1 * rt2 + d1 * rt1 * rt2)
# print("fy", a2 + b2 * rt1 + c2 * rt2 + d2 * rt1 * rt2)
# print("=")
# find f3 at the root points
f3 = np.empty_like(roots1)
markers = [None] * len(f3)
for i, rt1, rt2 in zip(count(), roots1, roots2):
f3[i] = a3 + b3 * rt1 + c3 * rt2 + d3 * rt1 * rt2
all_roots.append((d, rt1, rt2)) # switch order here
if f3[i] >= 0.0:
markers[i] = 'k^'
positive_roots.append((d, rt1, rt2)) # switch order here
else:
markers[i] = 'w^'
# rescale the roots to the original domain
roots1 = (yh - yl) * roots1 + yl
roots2 = (zh - zl) * roots2 + zl
yp = np.linspace(0.0, 1.0, ny)
# plt.subplot(121)
vlt.plot(fld['x'], "x={0}i".format(d), ax=axes[0 + 2 * di, 1],
plot_opts="x={0}_{1},y={2}_{3},lin_-10_10".format(yl, yh, zl, zh))
z1 = - (a1 + b1 * yp) / (c1 + d1 * yp)
plt.plot(y, (zh - zl) * z1 + zl, 'k')
for i, yrt, zrt in zip(count(), roots1, roots2):
plt.plot(yrt, zrt, markers[i])
# plt.subplot(122)
vlt.plot(fld['y'], "x={0}i".format(d), ax=axes[1 + 2 * di, 1],
plot_opts="x={0}_{1},y={2}_{3},lin_-10_10".format(yl, yh, zl, zh))
z1 = - (a2 + b2 * yp) / (c2 + d2 * yp)
plt.plot(y, (zh - zl) * z1 + zl, 'k')
for i, yrt, zrt in zip(count(), roots1, roots2):
plt.plot(yrt, zrt, markers[i])
#### ZX face
a1 = bx[iz, iy + d, ix]
b1 = bx[iz - 1, iy + d, ix] - a1
c1 = bx[iz, iy + d, ix - 1] - a1
d1 = bx[iz - 1, iy + d, ix - 1] - c1 - b1 - a1
a2 = by[iz, iy + d, ix]
b2 = by[iz - 1, iy + d, ix] - a2
c2 = by[iz, iy + d, ix - 1] - a2
d2 = by[iz - 1, iy + d, ix - 1] - c2 - b2 - a2
a3 = bz[iz, iy + d, ix]
b3 = bz[iz - 1, iy + d, ix] - a3
c3 = bz[iz, iy + d, ix - 1] - a3
d3 = bz[iz - 1, iy + d, ix - 1] - c3 - b3 - a3
roots1, roots2 = find_roots_face(a1, b1, c1, d1, a2, b2, c2, d2)
# for rt1, rt2 in zip(roots1, roots2):
# print("=")
# print("fx", a1 + b1 * rt1 + c1 * rt2 + d1 * rt1 * rt2)
# print("fy", a2 + b2 * rt1 + c2 * rt2 + d2 * rt1 * rt2)
# print("=")
# find f3 at the root points
f3 = np.empty_like(roots1)
markers = [None] * len(f3)
for i, rt1, rt2 in zip(count(), roots1, roots2):
f3[i] = a3 + b3 * rt1 + c3 * rt2 + d3 * rt1 * rt2
all_roots.append((rt2, d, rt1)) # switch order here
if f3[i] >= 0.0:
markers[i] = 'k^'
positive_roots.append((rt2, d, rt1)) # switch order here
else:
markers[i] = 'w^'
# rescale the roots to the original domain
roots1 = (zh - zl) * roots1 + zl
roots2 = (xh - xl) * roots2 + xl
zp = np.linspace(0.0, 1.0, nz)
# plt.subplot(121)
vlt.plot(fld['x'], "y={0}i".format(d), ax=axes[0 + 2 * di, 2],
plot_opts="x={0}_{1},y={2}_{3},lin_-10_10".format(xl, xh, zl, zh))
x1 = - (a1 + b1 * zp) / (c1 + d1 * zp)
plt.plot(z, (xh - xl) * x1 + xl, 'k')
for i, zrt, xrt in zip(count(), roots1, roots2):
plt.plot(xrt, zrt, markers[i])
# plt.subplot(121)
vlt.plot(fld['y'], "y={0}i".format(d), ax=axes[1 + 2 * di, 2],
plot_opts="x={0}_{1},y={2}_{3},lin_-10_10".format(xl, xh, zl, zh))
x1 = - (a2 + b2 * zp) / (c2 + d2 * zp)
plt.plot(z, (xh - xl) * x1 + xl, 'k')
for i, zrt, xrt in zip(count(), roots1, roots2):
plt.plot(xrt, zrt, markers[i])
print("all:", len(all_roots), "positive:", len(positive_roots))
if len(all_roots) % 2 == 1:
print("something is fishy, there are an odd number of root points "
"on the surface of your cube, there is probably a degenerate "
"line or surface of nulls")
print("Null Point?", (len(positive_roots) % 2 == 1))
plt.show()
def _main():
f = viscid.load_file('~/dev/work/xi_fte_001/*.3d.*.xdmf')
time_slice = ':'
times = np.array([grid.time for grid in f.iter_times(time_slice)])
# XYZ coordinates of virtual satelites in warped "plasma sheet coords"
x_sat_psc = np.linspace(-30, 0, 31) # X (GSE == PSC)
y_sat_psc = np.linspace(-10, 10, 21) # Y (GSE == PSC)
z_sat_psc = np.linspace(-2, 2, 5) # Z in PSC (z=0 is the plasma sheet)
# the GSE z location of the virtual satelites in the warped plasma sheet
# coordinates, so sat_z_gse_ts['x=5j, y=1j, z=0j'] would give the
# plasma sheet location at x=5.0, y=1.0
# These fields depend on time because the plasma sheet moves in time
sat_z_gse_ts = viscid.zeros([times, x_sat_psc, y_sat_psc, z_sat_psc],
crd_names='txyz', center='node',
name='PlasmaSheetZ_GSE')
vx_ts = viscid.zeros_like(sat_z_gse_ts)
bz_ts = viscid.zeros_like(sat_z_gse_ts)
for itime, grid in enumerate(f.iter_times(time_slice)):
print("Processing time slice", itime, grid.time)
gse_slice = 'x=-35j:0j, y=-15j:15j, z=-6j:6j'
bx = grid['bx'][gse_slice]
bx_argmin = np.argmin(bx**2, axis=2)
z_gse = bx.get_crd('z')
# ps_zloc_gse is the plasma sheet z location along the GGCM grid x/y
ps_z_gse = viscid.zeros_like(bx[:, :, 0:1])
ps_z_gse[...] = z_gse[bx_argmin]
# Note: Here you could apply a gaussian filter to
# ps_z_gse[:, :, 0].data in order to smooth the surface
# if desired. Scipy / Scikit-Image have some functions
# that do this
# ok, we found the plasma sheet z GSE location on the actual GGCM
# grid, but we just want a subset of that grid for our virtual
# satelites, so just interpolate the ps z location to our subset
ps_z_gse_subset = viscid.interp_trilin(ps_z_gse,
sat_z_gse_ts[itime, :, :, 0:1],
wrap=True)
# now we know the plasma sheet z location in GSE, and how far
# apart we want the satelites in z, so put those two things together
# to get a bunch of satelite locations
sat_z_gse_ts[itime] = ps_z_gse_subset.data + z_sat_psc.reshape(1, 1, -1)
# make a seed generator that we can use to fill the vx and bz
# time series for this instant in time
sat_loc_gse = sat_z_gse_ts[itime].get_points()
sat_loc_gse[2, :] = sat_z_gse_ts[itime].data.reshape(-1)
# slicing the field before doing the interpolation makes this
# faster for hdf5 data, but probably for other data too
vx_ts[itime] = viscid.interp_trilin(grid['vx'][gse_slice],
sat_loc_gse,
wrap=False
).reshape(vx_ts.shape[1:])
bz_ts[itime] = viscid.interp_trilin(grid['bz'][gse_slice],
sat_loc_gse,
wrap=False
).reshape(bz_ts.shape[1:])
# 2d plots of the plasma sheet z location to make sure we did the
# interpolation correctly
if False: # pylint: disable=using-constant-test
from viscid.plot import vpyplot as vlt
fig, (ax0, ax1) = vlt.subplots(2, 1) # pylint: disable=unused-variable
vlt.plot(ps_z_gse, ax=ax0, clim=(-5, 5))
vlt.plot(ps_z_gse_subset, ax=ax1, clim=(-5, 5))
vlt.auto_adjust_subplots()
vlt.show()
# make a 3d plot of the plasma sheet surface to verify that it
# makes sense
if True: # pylint: disable=using-constant-test
from viscid.plot import vlab
fig = vlab.figure(size=(1280, 800), bgcolor=(1, 1, 1),
fgcolor=(0, 0, 0))
vlab.clf()
# plot the plasma sheet coloured by vx
# Note: points closer to x = 0 are unsightly since the plasma
# sheet criteria starts to fall apart on the flanks, so
# just remove the first few rows
ps_z_gse_tail = ps_z_gse['x=:-2.25j']
ps_mesh_shape = [3, ps_z_gse_tail.shape[0], ps_z_gse_tail.shape[1]]
ps_pts = ps_z_gse_tail.get_points().reshape(ps_mesh_shape)
ps_pts[2, :, :] = ps_z_gse_tail[:, :, 0]
plasma_sheet = viscid.RectilinearMeshPoints(ps_pts)
ps_vx = viscid.interp_trilin(grid['vx'][gse_slice], plasma_sheet)
_ = vlab.mesh_from_seeds(plasma_sheet, scalars=ps_vx)
vx_clim = (-1400, 1400)
vx_cmap = 'viridis'
vlab.colorbar(title='Vx', clim=vx_clim, cmap=vx_cmap,
nb_labels=5)
# plot satelite locations as dots colored by Vx with the same
# limits and color as the plasma sheet mesh
sat3d = vlab.points3d(sat_loc_gse[0], sat_loc_gse[1], sat_loc_gse[2],
vx_ts[itime].data.reshape(-1),
scale_mode='none', scale_factor=0.2)
vlab.apply_cmap(sat3d, clim=vx_clim, cmap=vx_cmap)
# plot Earth for reference
cotr = viscid.Cotr(dip_tilt=0.0) # pylint: disable=not-callable
vlab.plot_blue_marble(r=1.0, lines=False, ntheta=64, nphi=128,
rotate=cotr, crd_system='mhd')
vlab.plot_earth_3d(radius=1.01, night_only=True, opacity=0.5,
crd_system='gse')
vlab.view(azimuth=45, elevation=70, distance=35.0,
focalpoint=[-9, 3, -1])
vlab.savefig('plasma_sheet_3d_{0:02d}.png'.format(itime))
vlab.show()
try:
vlab.mlab.close(fig)
except TypeError:
pass # this happens if the figure is already closed
# now do what we will with the time series... this is not a good
# presentation of this data, but you get the idea
from viscid.plot import vpyplot as vlt
fig, axes = vlt.subplots(4, 4, figsize=(12, 12))
for ax_row, yloc in zip(axes, np.linspace(-5, 5, len(axes))[::-1]):
for ax, xloc in zip(ax_row, np.linspace(4, 7, len(ax_row))):
vlt.plot(vx_ts['x={0}j, y={1}j, z=0j'.format(xloc, yloc)], ax=ax)
ax.set_ylabel('')
vlt.plt.title('x = {0:g}, y = {1:g}'.format(xloc, yloc))
vlt.plt.suptitle('Vx [km/s]')
vlt.auto_adjust_subplots()
vlt.show()
return 0
def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--show", "--plot", action="store_true")
args = vutil.common_argparse(parser)
dtype = 'float32'
########################################################################
# hard core test transpose (since this is used for mapfield transforms)
x = np.array(np.linspace( 1, -1, 9), dtype=dtype)
y = np.array(np.linspace(-1, 1, 9), dtype=dtype)
z = np.array(np.linspace(-1, 1, 9), dtype=dtype)
vI1 = viscid.empty([x, y, z], nr_comps=3, name='V', center='cell',
layout='interlaced')
vI2 = viscid.empty([z, y, x], nr_comps=3, name='V', center='cell',
layout='interlaced', crd_names='zyx')
vF1 = viscid.empty([x, y, z], nr_comps=3, name='V', center='cell',
layout='flat')
vF2 = viscid.empty([z, y, x], nr_comps=3, name='V', center='cell',
layout='flat', crd_names='zyx')
X1, Y1, Z1 = vI1.get_crds_cc(shaped=True)
X2, Y2, Z2 = vI2.get_crds_cc(shaped=True)
for v in (vI1, vF1):
v['x'] = (0.5 * X1) + (0.0 * Y1) + (0.0 * Z1)
v['y'] = (0.0 * X1) + (0.5 * Y1) + (0.5 * Z1)
v['z'] = (0.0 * X1) + (0.5 * Y1) + (0.5 * Z1)
for v in (vI2, vF2):
v['z'] = (0.5 * X2) + (0.5 * Y2) + (0.0 * Z2)
v['y'] = (0.5 * X2) + (0.5 * Y2) + (0.0 * Z2)
v['x'] = (0.0 * X2) + (0.0 * Y2) + (0.5 * Z2)
assert_different(vI1, vI2)
# test some straight up transposes of both interlaced and flat fields
assert_similar(vI1.spatial_transpose(), vI2)
assert_similar(vI1.ST, vI2)
assert_similar(vF1.spatial_transpose(), vF2)
assert_similar(vI1.transpose(), vF2)
assert_similar(vI1.T, vF2)
assert_different(vI1.transpose(), vI2)
assert_similar(vF1.transpose(), vI2)
assert_different(vF1.transpose(), vF2)
assert_similar(np.transpose(vI1), vF2)
assert_similar(np.transpose(vF1), vI2)
# now specify specific axes using all 3 interfaces
assert_similar(vI1.spatial_transpose('x', 'z', 'y'), vI1)
assert_similar(np.transpose(vI1, axes=[0, 2, 1, 3]), vI1)
assert_similar(vI1.transpose(0, 2, 1, 3), vI1)
assert_similar(vF1.spatial_transpose('x', 'z', 'y'), vF1)
assert_similar(np.transpose(vF1, axes=(0, 1, 3, 2)), vF1)
assert_similar(vF1.transpose(0, 1, 3, 2), vF1)
# now test swapaxes since that uses
assert_similar(vI1.swapaxes(1, 2), vI1)
assert_similar(np.swapaxes(vI1, 1, 2), vI1)
assert_similar(vI1.swap_crd_axes('y', 'z'), vI1)
##############################
# test some other mathy stuff
x = np.array(np.linspace(-1, 1, 2), dtype=dtype)
y = np.array(np.linspace(-2, 2, 30), dtype=dtype)
z = np.array(np.linspace(-5, 5, 90), dtype=dtype)
v = viscid.empty([x, y, z], nr_comps=3, name='V', center='cell',
layout='interlaced')
X, Y, Z = v.get_crds_cc(shaped=True)
v['x'] = (0.5 * X**2) + ( Y ) + (0.0 * Z )
v['y'] = (0.0 * X ) + (0.5 * Y**2) + (0.0 * Z )
v['z'] = (0.0 * X ) + (0.0 * Y ) + (0.5 * Z**2)
mag = viscid.magnitude(v)
mag2 = np.sqrt(np.sum(v * v, axis=v.nr_comp))
another = np.transpose(mag)
plt.subplot(151)
vlt.plot(v['x'])
plt.subplot(152)
vlt.plot(v['y'])
plt.subplot(153)
vlt.plot(mag)
plt.subplot(154)
vlt.plot(mag2)
plt.subplot(155)
vlt.plot(another)
plt.savefig(next_plot_fname(__file__))
if args.show:
plt.show()
return 0
def main():
mhd_type = "C3"
make_plots = 1
mhd_type = mhd_type.upper()
if mhd_type.startswith("C"):
if mhd_type in ("C",):
f = viscid.load_file("$WORK/tmedium/*.3d.[-1].xdmf")
elif mhd_type in ("C2", "C3"):
f = viscid.load_file("$WORK/tmedium2/*.3d.[-1].xdmf")
else:
raise ValueError()
catol = 1e-8
rtol = 2e-6
elif mhd_type in ("F", "FORTRAN"):
f = viscid.load_file("$WORK/tmedium3/*.3df.[-1]")
catol = 1e-8
rtol = 7e-2
else:
raise ValueError()
b = f['b_cc']
b1 = f['b_fc']
e_cc = f['e_cc']
e_ec = f['e_ec']
# divb = f['divB']
# viscid.interact()
if True:
bD = viscid.empty_like(b)
bD.data = np.array(b.data)
b1D = viscid.empty_like(b1)
b1D.data = np.array(b1.data)
mask5 = viscid.make_spherical_mask(bD, rmax=3.5)
mask1_5 = viscid.make_spherical_mask(bD, rmax=1.5)
viscid.fill_dipole(bD, mask=mask5)
viscid.set_in_region(bD, bD, 0.0, 0.0, mask=mask1_5, out=bD)
# compare_vectors(_b, bD, make_plots=True)
mask5 = viscid.make_spherical_mask(b1D, rmax=3.5)
mask1_5 = viscid.make_spherical_mask(b1D, rmax=1.5)
viscid.fill_dipole(b1D, mask=mask5)
viscid.set_in_region(b1D, b1D, 0.0, 0.0, mask=mask1_5, out=b1D)
compare_vectors(bD["x=1:-1, y=1:-1, z=1:-1"], b1D.as_cell_centered(),
make_plots=True)
# plt.clf()
# dkwargs = dict(symmetric=True, earth=True, clim=(-1e2, 1e2))
# ax1 = plt.subplot(311)
# vlt.plot(viscid.div(b1)['y=0j'], **dkwargs)
# plt.subplot(312, sharex=ax1, sharey=ax1)
# vlt.plot(viscid.div(b)['y=0j'], **dkwargs)
# plt.subplot(313, sharex=ax1, sharey=ax1)
# vlt.plot(viscid.div(b1D)['y=0j'], **dkwargs)
# vlt.show()
bD = b1D = mask5 = mask1_5 = None
# straight up interpolate b1 to cc crds and compare with b
if True:
b1_cc = viscid.interp_trilin(b1, b).as_flat()
viscid.set_in_region(b, b, alpha=0.0, beta=0.0, out=b,
mask=viscid.make_spherical_mask(b, rmax=5.0))
viscid.set_in_region(b1_cc, b1_cc, alpha=0.0, beta=0.0, out=b1_cc,
mask=viscid.make_spherical_mask(b1_cc, rmax=5.0))
compare_vectors(b, b1_cc, make_plots=True)
# make div?
if True:
# make seeds for 1.5x supersampling b1
n = 128
seeds = viscid.Volume((5.1, -0.02, -5.0), (12.0, 0.02, 5.0), (n, 3, n))
# do interpolation onto new seeds
b2 = viscid.interp_trilin(b1, seeds)
div_b = viscid.div(b)
div_b1 = viscid.div(b1)
div_b2 = viscid.div(b2)
viscid.set_in_region(div_b, div_b, alpha=0.0, beta=0.0, out=div_b,
mask=viscid.make_spherical_mask(div_b, rmax=5.0))
viscid.set_in_region(div_b1, div_b1, alpha=0.0, beta=0.0, out=div_b1,
mask=viscid.make_spherical_mask(div_b1, rmax=5.0))
viscid.set_in_region(div_b2, div_b2, alpha=0.0, beta=0.0, out=div_b2,
mask=viscid.make_spherical_mask(div_b2, rmax=5.0))
viscid.set_in_region(divb, divb, alpha=0.0, beta=0.0, out=divb,
mask=viscid.make_spherical_mask(divb, rmax=5.0))
plt.clf()
ax1 = vlt.subplot(311)
vlt.plot(div_b['y=0j'], symmetric=True, earth=True)
vlt.subplot(312, sharex=ax1, sharey=ax1)
# vlt.plot(div_b1['y=0j'], symmetric=True, earth=True)
vlt.plot(div_b2['y=0j'], symmetric=True, earth=True)
vlt.subplot(313, sharex=ax1, sharey=ax1)
vlt.plot(divb['y=0j'], symmetric=True, earth=True)
vlt.show()
return 0
def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--show", "--plot", action="store_true")
args = vutil.common_argparse(parser)
dtype = 'float32'
########################################################################
# hard core test transpose (since this is used for mapfield transforms)
x = np.array(np.linspace(1, -1, 9), dtype=dtype)
y = np.array(np.linspace(-1, 1, 9), dtype=dtype)
z = np.array(np.linspace(-1, 1, 9), dtype=dtype)
vI1 = viscid.empty([x, y, z],
nr_comps=3,
name='V',
center='cell',
layout='interlaced')
vI2 = viscid.empty([z, y, x],
nr_comps=3,
name='V',
center='cell',
layout='interlaced',
crd_names='zyx')
vF1 = viscid.empty([x, y, z],
nr_comps=3,
name='V',
center='cell',
layout='flat')
vF2 = viscid.empty([z, y, x],
nr_comps=3,
name='V',
center='cell',
layout='flat',
crd_names='zyx')
X1, Y1, Z1 = vI1.get_crds_cc(shaped=True)
X2, Y2, Z2 = vI2.get_crds_cc(shaped=True)
for v in (vI1, vF1):
v['x'] = (0.5 * X1) + (0.0 * Y1) + (0.0 * Z1)
v['y'] = (0.0 * X1) + (0.5 * Y1) + (0.5 * Z1)
v['z'] = (0.0 * X1) + (0.5 * Y1) + (0.5 * Z1)
for v in (vI2, vF2):
v['z'] = (0.5 * X2) + (0.5 * Y2) + (0.0 * Z2)
v['y'] = (0.5 * X2) + (0.5 * Y2) + (0.0 * Z2)
v['x'] = (0.0 * X2) + (0.0 * Y2) + (0.5 * Z2)
assert_different(vI1, vI2)
# test some straight up transposes of both interlaced and flat fields
assert_similar(vI1.spatial_transpose(), vI2)
assert_similar(vI1.ST, vI2)
assert_similar(vF1.spatial_transpose(), vF2)
assert_similar(vI1.transpose(), vF2)
assert_similar(vI1.T, vF2)
assert_different(vI1.transpose(), vI2)
assert_similar(vF1.transpose(), vI2)
assert_different(vF1.transpose(), vF2)
assert_similar(np.transpose(vI1), vF2)
assert_similar(np.transpose(vF1), vI2)
# now specify specific axes using all 3 interfaces
assert_similar(vI1.spatial_transpose('x', 'z', 'y'), vI1)
assert_similar(np.transpose(vI1, axes=[0, 2, 1, 3]), vI1)
assert_similar(vI1.transpose(0, 2, 1, 3), vI1)
assert_similar(vF1.spatial_transpose('x', 'z', 'y'), vF1)
assert_similar(np.transpose(vF1, axes=(0, 1, 3, 2)), vF1)
assert_similar(vF1.transpose(0, 1, 3, 2), vF1)
# now test swapaxes since that uses
assert_similar(vI1.swapaxes(1, 2), vI1)
assert_similar(np.swapaxes(vI1, 1, 2), vI1)
assert_similar(vI1.swap_crd_axes('y', 'z'), vI1)
##############################
# test some other mathy stuff
x = np.array(np.linspace(-1, 1, 2), dtype=dtype)
y = np.array(np.linspace(-2, 2, 30), dtype=dtype)
z = np.array(np.linspace(-5, 5, 90), dtype=dtype)
v = viscid.empty([x, y, z],
nr_comps=3,
name='V',
center='cell',
layout='interlaced')
X, Y, Z = v.get_crds_cc(shaped=True)
v['x'] = (0.5 * X**2) + (Y) + (0.0 * Z)
v['y'] = (0.0 * X) + (0.5 * Y**2) + (0.0 * Z)
v['z'] = (0.0 * X) + (0.0 * Y) + (0.5 * Z**2)
mag = viscid.magnitude(v)
mag2 = np.sqrt(np.sum(v * v, axis=v.nr_comp))
another = np.transpose(mag)
plt.subplot(151)
vlt.plot(v['x'])
plt.subplot(152)
vlt.plot(v['y'])
plt.subplot(153)
vlt.plot(mag)
plt.subplot(154)
vlt.plot(mag2)
plt.subplot(155)
vlt.plot(another)
plt.savefig(next_plot_fname(__file__))
if args.show:
plt.show()
return 0
def _do_multiplot(tind, grid, plot_vars=None, global_popts=None, kwopts=None,
share_axes=False, show=False, subplot_params=None,
first_run_result=None, first_run=False, **kwargs):
import matplotlib.pyplot as plt
from viscid.plot import vpyplot as vlt
logger.info("Plotting timestep: %d, %g", tind, grid.time)
if plot_vars is None:
raise ValueError("No plot_vars given to `_do_multiplot` :(")
if kwargs:
logger.info("Unused kwargs: {0}".format(kwargs))
if kwopts is None:
kwopts = {}
transpose = kwopts.get("transpose", False)
plot_size = kwopts.get("plot_size", None)
dpi = kwopts.get("dpi", None)
out_prefix = kwopts.get("out_prefix", None)
out_format = kwopts.get("out_format", "png")
selection = kwopts.get("selection", None)
timeformat = kwopts.get("timeformat", ".02f")
tighten = kwopts.get("tighten", False)
# wicked hacky
# subplot_params = kwopts.get("subplot_params", _subplot_params)
# nrows = len(plot_vars)
nrows = len([pv[0] for pv in plot_vars if not pv[0].startswith('^')])
ncols = 1
if transpose:
nrows, ncols = ncols, nrows
if nrows == 0:
logger.warn("I have no variables to plot")
return
fig = plt.gcf()
if plot_size is not None:
fig.set_size_inches(*plot_size, forward=True)
if dpi is not None:
fig.set_dpi(dpi)
shareax = None
this_row = -1
for i, fld_meta in enumerate(plot_vars):
if not fld_meta[0].startswith('^'):
this_row += 1
same_axis = False
else:
same_axis = True
fld_name_meta = fld_meta[0].lstrip('^')
fld_name_split = fld_name_meta.split(',')
if '=' in fld_name_split[0]:
# if fld_name is actually an equation, assume
# there's no slice, and commas are part of the
# equation
fld_name = ",".join(fld_name_split)
fld_slc = ""
else:
fld_name = fld_name_split[0]
fld_slc = ",".join(fld_name_split[1:])
if selection is not None:
# fld_slc += ",{0}".format(selection)
if fld_slc != "":
fld_slc = ",".join([fld_slc, selection])
else:
fld_slc = selection
if fld_slc.strip() == "":
fld_slc = None
# print("fld_time:", fld.time)
if this_row < 0:
raise ValueError("first plot can't begin with a +")
row = this_row
col = 0
if transpose:
row, col = col, row
if not same_axis:
ax = plt.subplot2grid((nrows, ncols), (row, col),
sharex=shareax, sharey=shareax)
if i == 0 and share_axes:
shareax = ax
if "plot_opts" not in fld_meta[1]:
fld_meta[1]["plot_opts"] = global_popts
elif global_popts is not None:
fld_meta[1]["plot_opts"] = "{0},{1}".format(
fld_meta[1]["plot_opts"], global_popts)
with grid.get_field(fld_name, slc=fld_slc) as fld:
vlt.plot(fld, masknan=True, **fld_meta[1])
# print("fld cache", grid[fld_meta[0]]._cache)
if timeformat and timeformat.lower() != "none":
plt.suptitle(grid.format_time(timeformat))
# for adjusting subplots / tight_layout and applying the various
# hacks to keep plots from dancing around in movies
if not subplot_params and first_run_result:
subplot_params = first_run_result
if tighten:
tighten = dict(rect=[0, 0.03, 1, 0.90])
ret = vlt.auto_adjust_subplots(tight_layout=tighten,
subplot_params=subplot_params)
if not first_run:
ret = None
if out_prefix:
plt.savefig("{0}_{1:06d}.{2}".format(out_prefix, tind + 1, out_format))
if show:
plt.show()
plt.clf()
return ret
def main():
mhd_type = "C"
make_plots = 1
test_fc = 1
test_ec = 1
test_div = 1
test_interp = 1
test_streamline = 1
mhd_type = mhd_type.upper()
if mhd_type.startswith("C"):
if mhd_type in ("C",):
f = viscid.load_file("$WORK/tmedium/*.3d.[-1].xdmf")
elif mhd_type in ("C2", "C3"):
f = viscid.load_file("$WORK/tmedium2/*.3d.[-1].xdmf")
else:
raise ValueError()
catol = 1e-8
rtol = 5e-6
elif mhd_type in ("F", "FORTRAN"):
f = viscid.load_file("$WORK/tmedium3/*.3df.[-1]")
catol = 1e-8
rtol = 7e-2
else:
raise ValueError()
ISLICE = slice(None)
# ISLICE = 'y=0j:0.15j'
# #################
# # test out fc2cc
if test_fc:
b = f['b'][ISLICE]
b1 = f['b1'][ISLICE]
compare_vectors(b, b1, viscid.fc2cc, catol=catol, rtol=rtol,
make_plots=make_plots)
#################
# test out ec2cc
if test_ec:
e_cc = f['e_cc'][ISLICE]
e_ec = f['e_ec'][ISLICE]
if mhd_type not in ("F", "FORTRAN"):
compare_vectors(e_cc, e_ec, viscid.ec2cc, catol=catol, rtol=rtol,
make_plots=make_plots)
#################
# test out divfc
# Note: Relative error on Div B is meaningless b/c the coordinates
# are not the same up to order (dx/4) I think. You can see this
# since (fcdiv - divb_trimmed) is both noisy and stripy
if test_div:
bnd = 0
if mhd_type not in ("F", "FORTRAN"):
b1 = f['b1'][ISLICE]
divb = f['divB'][ISLICE]
if bnd:
trimmed = divb
else:
trimmed = divb['x=1:-1, y=1:-1, z=1:-1']
b1mag = viscid.magnitude(viscid.fc2cc(b1, bnd=bnd))
divb1 = viscid.div_fc(b1, bnd=bnd)
viscid.set_in_region(trimmed, trimmed, alpha=0.0, beta=0.0, out=trimmed,
mask=viscid.make_spherical_mask(trimmed, rmax=5.0))
viscid.set_in_region(divb1, divb1, alpha=0.0, beta=0.0, out=divb1,
mask=viscid.make_spherical_mask(divb1, rmax=5.0))
reldiff = (divb1 - trimmed) / b1mag
reldiff = reldiff["x=1:-1, y=1:-1, z=1:-1"]
reldiff.name = divb1.name + " - " + trimmed.name
reldiff.pretty_name = divb1.pretty_name + " - " + trimmed.pretty_name
abs_max_rel_diff = np.nanmax(np.abs(reldiff))
max_crd_diff = [0.0] * 3
for i, d in enumerate('xyz'):
max_crd_diff[i] = np.max(trimmed.get_crd(d) - divb1.get_crd(d))
print("divB max absolute relative diff: {0:.3e} "
"(crds: X: {1[0]:.3e}, Y: {1[1]:.3e}, Z: {1[2]:.3e})"
"".format(abs_max_rel_diff, max_crd_diff))
# plot differences?
if make_plots:
ax1 = plt.subplot(311)
vlt.plot(divb['y=0j'], symmetric=True, earth=True)
plt.subplot(312, sharex=ax1, sharey=ax1)
vlt.plot(divb1['y=0j'], symmetric=True, earth=True)
plt.subplot(313, sharex=ax1, sharey=ax1)
vlt.plot(reldiff['y=0j'], symmetric=True, earth=True)
vlt.show()
# Since the coordinates will be different by order dx^2 (i think),
# there is no way to compare the divB from simulation with the
# one we get here. However, they should be the same up to a few %, and
# down to noise level with stripes of enhanced noise. These stripes
# are the errors in the coordinate values (since the output only
# gives us weird nc = averaged cc locations)
#
# if abs_max_rel_diff > rtol or np.any(np.abs(max_crd_diff) > catol):
# raise RuntimeError("Tolerance exceeded on divB calculation")
if test_streamline:
b_cc = f['b_cc']['x=-40j:12j, y=-15j:15j, z=-15j:15j']
b_fc = f['b_fc']['x=-40j:12j, y=-15j:15j, z=-15j:15j']
cotr = viscid.cotr.Cotr()
r_mask = 3.0
# set b_cc to dipole inside some sphere
isphere_mask = viscid.make_spherical_mask(b_cc, rmax=r_mask)
moment = cotr.get_dipole_moment(crd_system=b_cc)
viscid.fill_dipole(b_cc, m=moment, mask=isphere_mask)
# set b_fc to dipole inside some sphere
isphere_mask = viscid.make_spherical_mask(b_fc, rmax=r_mask)
moment = cotr.get_dipole_moment(crd_system=b_fc)
viscid.fill_dipole(b_fc, m=moment, mask=isphere_mask)
seeds = viscid.Volume([-10, 0, -5], [10, 0, 5], (16, 1, 3))
sl_kwargs = dict(ibound=1.0, method=viscid.EULER1A)
lines_cc, topo_cc = viscid.calc_streamlines(b_cc, seeds, **sl_kwargs)
lines_fc, topo_fc = viscid.calc_streamlines(b_fc, seeds, **sl_kwargs)
if make_plots:
plt.figure(figsize=(10, 6))
ax0 = plt.subplot(211)
topo_cc_colors = viscid.topology2color(topo_cc)
vlt.plot(f['pp']['y=0j'], logscale=True, earth=True, cmap='plasma')
vlt.plot2d_lines(lines_cc, topo_cc_colors, symdir='y')
ax0 = plt.subplot(212, sharex=ax0, sharey=ax0)
topo_fc_colors = viscid.topology2color(topo_fc)
vlt.plot(f['pp']['y=0j'], logscale=True, earth=True, cmap='plasma')
vlt.plot2d_lines(lines_fc, topo_fc_colors, symdir='y')
plt.xlim(-20, 10)
plt.ylim(-10, 10)
vlt.auto_adjust_subplots()
vlt.show()
if test_interp:
# test interpolation with E . B / B
b_cc = f['b_cc']
b_fc = f['b_fc']
e_cc = f['e_cc']
e_ec = f['e_ec']
cotr = viscid.cotr.Cotr()
r_mask = 3.0
# set b_cc to dipole inside some sphere
isphere_mask = viscid.make_spherical_mask(b_cc, rmax=r_mask)
moment = cotr.get_dipole_moment(crd_system=b_cc)
viscid.fill_dipole(b_cc, m=moment, mask=isphere_mask)
# set b_fc to dipole inside some sphere
isphere_mask = viscid.make_spherical_mask(b_fc, rmax=r_mask)
moment = cotr.get_dipole_moment(crd_system=b_fc)
viscid.fill_dipole(b_fc, m=moment, mask=isphere_mask)
# zero out e_cc inside some sphere
viscid.set_in_region(e_cc, e_cc, alpha=0.0, beta=0.0, out=e_cc,
mask=viscid.make_spherical_mask(e_cc, rmax=r_mask))
# zero out e_ec inside some sphere
viscid.set_in_region(e_ec, e_ec, alpha=0.0, beta=0.0, out=e_ec,
mask=viscid.make_spherical_mask(e_ec, rmax=r_mask))
tmp = viscid.empty([np.linspace(-10, 10, 64), np.linspace(-10, 10, 64),
np.linspace(-10, 10, 64)], center="Cell")
b_cc_interp = viscid.interp_linear(b_cc, tmp)
b_fc_interp = viscid.interp_linear(b_fc, tmp)
e_cc_interp = viscid.interp_linear(e_cc, tmp)
e_ec_interp = viscid.interp_linear(e_ec, tmp)
epar_cc = viscid.dot(e_cc_interp, b_cc_interp) / viscid.magnitude(b_cc_interp)
epar_ecfc = viscid.dot(e_ec_interp, b_fc_interp) / viscid.magnitude(b_fc_interp)
if make_plots:
# plt.figure()
# ax0 = plt.subplot(121)
# vlt.plot(b_cc['x']['y=0j'], clim=(-40, 40))
# plt.subplot(122, sharex=ax0, sharey=ax0)
# vlt.plot(b_fc['x']['y=0j'], clim=(-40, 40))
# vlt.show()
plt.figure(figsize=(14, 5))
ax0 = plt.subplot(131)
vlt.plot(epar_cc['y=0j'], symmetric=True, cbarlabel="Epar CC")
plt.subplot(132, sharex=ax0, sharey=ax0)
vlt.plot(epar_ecfc['y=0j'], symmetric=True, cbarlabel="Epar ECFC")
plt.subplot(133, sharex=ax0, sharey=ax0)
vlt.plot(((epar_cc - epar_ecfc) / epar_cc)['y=0j'], clim=(-10, 10),
cbarlabel="Rel Diff")
vlt.auto_adjust_subplots()
vlt.show()
return 0
def _main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--prof", action="store_true")
parser.add_argument("--show", "--plot", action="store_true")
args = vutil.common_argparse(parser)
b = viscid.make_dipole(l=(-5, -5, -5), h=(5, 5, 5), n=(255, 255, 127),
m=(0, 0, -1))
b2 = np.sum(b * b, axis=b.nr_comp)
if args.prof:
print("Without boundaries")
viscid.timeit(viscid.grad, b2, bnd=False, timeit_repeat=10,
timeit_print_stats=True)
print("With boundaries")
viscid.timeit(viscid.grad, b2, bnd=True, timeit_repeat=10,
timeit_print_stats=True)
grad_b2 = viscid.grad(b2)
grad_b2.pretty_name = r"$\nabla$ B$^2$"
conv = viscid.convective_deriv(b)
conv.pretty_name = r"(B $\cdot \nabla$) B"
_ = plt.figure(figsize=(9, 4.2))
ax1 = vlt.subplot(231)
vlt.plot(b2['z=0f'], logscale=True)
vlt.plot(b2['z=0f'], logscale=True, style='contour', levels=10, colors='grey')
# vlt.plot2d_quiver(viscid.normalize(b['z=0f']), step=16, pivot='mid')
ax2 = vlt.subplot(234)
vlt.plot(b2['y=0f'], logscale=True)
vlt.plot(b2['y=0f'], logscale=True, style='contour', levels=10, colors='grey')
vlt.plot2d_quiver(viscid.normalize(b['y=0f'], preferred='numpy'),
step=16, pivot='mid')
vlt.subplot(232, sharex=ax1, sharey=ax1)
vlt.plot(1e-4 + viscid.magnitude(grad_b2['z=0f']), logscale=True)
vlt.plot(1e-4 + viscid.magnitude(grad_b2['z=0f']), logscale=True,
style='contour', levels=10, colors='grey')
vlt.plot2d_quiver(viscid.normalize(grad_b2['z=0f']), step=16, pivot='mid')
vlt.subplot(235, sharex=ax2, sharey=ax2)
vlt.plot(1e-4 + viscid.magnitude(grad_b2['y=0f']), logscale=True)
vlt.plot(1e-4 + viscid.magnitude(grad_b2['y=0f']), logscale=True,
style='contour', levels=10, colors='grey')
vlt.plot2d_quiver(viscid.normalize(grad_b2['y=0f']), step=16, pivot='mid')
vlt.subplot(233, sharex=ax1, sharey=ax1)
vlt.plot(viscid.magnitude(conv['z=0f']), logscale=True)
vlt.plot(viscid.magnitude(conv['z=0f']), logscale=True,
style='contour', levels=10, colors='grey')
vlt.plot2d_quiver(viscid.normalize(conv['z=0f']), step=16, pivot='mid')
vlt.subplot(236, sharex=ax2, sharey=ax2)
vlt.plot(viscid.magnitude(conv['y=0f']), logscale=True)
vlt.plot(viscid.magnitude(conv['y=0f']), logscale=True,
style='contour', levels=10, colors='grey')
vlt.plot2d_quiver(viscid.normalize(conv['y=0f']), step=16, pivot='mid')
vlt.auto_adjust_subplots()
plt.savefig(next_plot_fname(__file__))
if args.show:
vlt.show()
return 0