def main():
parser = argparse.ArgumentParser(description="Test divergence")
parser.add_argument("--show", "--plot", action="store_true")
args = vutil.common_argparse(parser)
dtype = 'float64'
# use 512 512 256 to inspect memory related things
x = np.array(np.linspace(-0.5, 0.5, 256), dtype=dtype)
y = np.array(np.linspace(-0.5, 0.5, 256), dtype=dtype)
z = np.array(np.linspace(-0.5, 0.5, 64), dtype=dtype)
v = viscid.empty([x, y, z], name="V", nr_comps=3, center="cell",
layout="interlaced")
exact_cc = viscid.empty([x, y, z], name="exact_cc", center='cell')
Xcc, Ycc, Zcc = exact_cc.get_crds_cc(shaped=True) #pylint: disable=W0612
v['x'] = ne.evaluate("(sin(Xcc))") # + Zcc
v['y'] = ne.evaluate("(cos(Ycc))") # + Xcc# + Zcc
v['z'] = ne.evaluate("-((sin(Zcc)))") # + Xcc# + Ycc
exact_cc[:, :, :] = ne.evaluate("cos(Xcc) - sin(Ycc) - cos(Zcc)")
logger.info("node centered tests")
v_nc = v.as_centered('node')
exact_nc = viscid.empty_like(v_nc['x'])
X, Y, Z = exact_nc.get_crds_nc(shaped=True) #pylint: disable=W0612
exact_nc[:, :, :] = ne.evaluate("cos(X) - sin(Y) - cos(Z)")
# FIXME: why is the error so much larger here?
run_div_test(v_nc, exact_nc, show=args.show, ignore_inexact=True)
logger.info("cell centered tests")
v_cc = v_nc.as_centered('cell')
run_div_test(v_cc, exact_cc, show=args.show)
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)
dtype = 'float64'
# use 512 512 256 to inspect memory related things
x = np.array(np.linspace(-0.5, 0.5, 256), dtype=dtype)
y = np.array(np.linspace(-0.5, 0.5, 256), dtype=dtype)
z = np.array(np.linspace(-0.5, 0.5, 64), dtype=dtype)
v = viscid.empty([x, y, z], name="V", nr_comps=3, center="cell",
layout="interlaced")
exact_cc = viscid.empty([x, y, z], name="exact_cc", center='cell')
Xcc, Ycc, Zcc = exact_cc.get_crds_cc(shaped=True) # pylint: disable=W0612
if HAS_NUMEXPR:
v['x'] = ne.evaluate("(sin(Xcc))") # + Zcc
v['y'] = ne.evaluate("(cos(Ycc))") # + Xcc# + Zcc
v['z'] = ne.evaluate("-((sin(Zcc)))") # + Xcc# + Ycc
exact_cc[:, :, :] = ne.evaluate("cos(Xcc) - sin(Ycc) - cos(Zcc)")
else:
v['x'] = (np.sin(Xcc)) # + Zcc
v['y'] = (np.cos(Ycc)) # + Xcc# + Zcc
v['z'] = -((np.sin(Zcc))) # + Xcc# + Ycc
exact_cc[:, :, :] = np.cos(Xcc) - np.sin(Ycc) - np.cos(Zcc)
if args.prof:
print("Without boundaries")
viscid.timeit(viscid.div, v, bnd=False, timeit_repeat=10,
timeit_print_stats=True)
print("With boundaries")
viscid.timeit(viscid.div, v, bnd=True, timeit_repeat=10,
timeit_print_stats=True)
logger.info("node centered tests")
v_nc = v.as_centered('node')
exact_nc = viscid.empty_like(v_nc['x'])
X, Y, Z = exact_nc.get_crds_nc(shaped=True) # pylint: disable=W0612
if HAS_NUMEXPR:
exact_nc[:, :, :] = ne.evaluate("cos(X) - sin(Y) - cos(Z)")
else:
exact_nc[:, :, :] = np.cos(X) - np.sin(Y) - np.cos(Z)
# FIXME: why is the error so much larger here?
run_div_test(v_nc, exact_nc, title='Node Centered', show=args.show,
ignore_inexact=True)
logger.info("cell centered tests")
v_cc = v_nc.as_centered('cell')
run_div_test(v_cc, exact_cc, title="Cell Centered", show=args.show)
return 0
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)
dtype = 'float32'
x = np.array(np.linspace(-5, 5, 512), dtype=dtype)
y = np.array(np.linspace(-5, 5, 256), dtype=dtype)
z = np.array(np.linspace(-5, 5, 256), dtype=dtype)
v = viscid.empty([x, y, z], name="V", nr_comps=3, center='node',
layout='interlaced')
X, Y, Z = v.get_crds_nc(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)
logger.info("Testing node centered magnitudes")
run_mag_test(v, title="node centered", show=args.show)
logger.info("Testing cell centered magnitudes")
v = v.as_centered('cell')
run_mag_test(v, title="cell centered", show=args.show)
# print(resource.getrusage(resource.RUSAGE_SELF).ru_maxrss / 1024**2)
# print("ne: ", timereps(10, Div1ne, [vx, vy, vz]))
# print(resource.getrusage(resource.RUSAGE_SELF).ru_maxrss / 1024**2)
# print("inline: ", timereps(10, Div1inline, [vx, vy, vz]))
# print(resource.getrusage(resource.RUSAGE_SELF).ru_maxrss / 1024**2)
return 0
def main():
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument("--show", "--plot", action="store_true")
args = vutil.common_argparse(parser)
dtype = "float32"
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)
mpl.plot(v["x"])
plt.subplot(152)
mpl.plot(v["y"])
plt.subplot(153)
mpl.plot(mag)
plt.subplot(154)
mpl.plot(mag2)
plt.subplot(155)
mpl.plot(another)
if args.show:
plt.show()
return 0
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))
mpl.plot(fld_s, "z=0,x=:30", earth=True, plot_opts="lin_0")
plt.subplot2grid((nrows, ncols), (1, 0))
mpl.plot(fld_s, "z=0.75f,x=-4:-1,y=-3f:3f", earth=True)
plt.subplot2grid((nrows, ncols), (2, 0))
mpl.plot(fld_s, "x=-0.5f:,y=-3f:3f,z=0f", earth=True)
plt.subplot2grid((nrows, ncols), (3, 0))
mpl.plot(fld_s, "x=0.0f,y=-5.0f:5.0f", earth=True, plot_opts="log,g")
mpl.plt.suptitle("3d node centered")
mpl.auto_adjust_subplots()
mpl.plt.savefig(next_plot_fname(__file__))
if show:
mpl.mplshow()
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))
mpl.plot(fld_s, "y=20f", show=False, plot_opts="lin_0")
plt.subplot2grid((nrows, ncols), (1, 0))
mpl.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))
mpl.plot(fld_s, "y=0f", show=False, plot_opts="lin_-1_1")
plt.subplot2grid((nrows, ncols), (3, 0))
mpl.plot(fld_s, "z=0f,x=-20f:0f", earth=True, show=False, plot_opts="lin_-5_5")
mpl.plt.suptitle("2d cell centered")
mpl.auto_adjust_subplots()
mpl.plt.savefig(next_plot_fname(__file__))
if show:
mpl.mplshow()
def get_trilinear_field():
"""get a generic trilinear field"""
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 = viscid.wrap_crds("nonuniform_cartesian",
[('x', x), ('y', y), ('z', z)])
b = viscid.empty(crds, name="f", nr_comps=3, center="Cell",
layout="interlaced")
X, Y, Z = b.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
b['x'][:] = (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))
b['y'][:] = (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))
b['z'][:] = (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))
return b
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 make_vector_fld():
x, y, z = make_grid()
f0 = viscid.empty((x, y, z), dtype=DTYPE, nr_comps=3, center='node')
viscid.fill_dipole(f0)
# seeds = viscid.Sphere(r=10.0, nphi=64, ntheta=32)
seeds = viscid.Sphere(r=10.0, nphi=32, ntheta=48)
return f0, seeds
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 make_vector_fld():
x, y, z = make_grid()
f0 = viscid.empty((x, y, z), dtype=DTYPE, nr_comps=3, center='node')
viscid.fill_dipole(f0)
# seeds = viscid.Sphere(r=10.0, nphi=64, ntheta=32)
seeds = viscid.Sphere(r=10.0, nphi=32, ntheta=48)
return f0, seeds
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 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 get_trilinear_field():
"""get a generic trilinear field"""
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 = viscid.wrap_crds("nonuniform_cartesian", [('x', x), ('y', y),
('z', z)])
b = viscid.empty(crds,
name="f",
nr_comps=3,
center="Cell",
layout="interlaced")
X, Y, Z = b.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
b['x'][:] = (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))
b['y'][:] = (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))
b['z'][:] = (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))
return b
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")
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 main():
parser = argparse.ArgumentParser(description="Test xdmf")
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 = 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)
mpl.plot(f["psi"], "y=0")
plt.subplot(132)
mpl.plot(f["b"].component_fields()[0], "y=0")
plt.subplot(133)
mpl.plot(f["b"].component_fields()[2], "y=0")
mpl.plt.savefig(next_plot_fname(__file__))
if args.show:
plt.show()
if not args.keep:
os.remove(h5_fname)
os.remove(xdmf_fname)
def main():
parser = argparse.ArgumentParser(description="Test xdmf")
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
fname = sample_dir + '/test.npz'
viscid.save_fields(fname, [psi, b])
f = viscid.load_file(fname)
plt.subplot(131)
mpl.plot(f['psi'], "y=0")
plt.subplot(132)
mpl.plot(f['b'].component_fields()[0], "y=0")
plt.subplot(133)
mpl.plot(f['b'].component_fields()[2], "y=0")
mpl.plt.savefig(next_plot_fname(__file__))
if args.show:
plt.show()
if not args.keep:
os.remove(fname)
def run_test(x, y, profile=False):
z = np.array([0.0])
fld_nc = viscid.empty([x, y, z], center='node', name="MyField",
pretty_name="My Field [Units]")
fld_cc = fld_nc.as_centered('cell')
x2, y2 = fld_cc.get_crds_nc('xy')
dx = x2[:-1] - x
dy = y2[:-1] - y
assert np.all(dx < np.zeros_like(dx)), 'cells are jumbled in x'
assert np.all(dy < np.zeros_like(dy)), 'cells are jumbled in y'
dx = x - x2[1:]
dy = y - y2[1:]
assert np.all(dx < np.zeros_like(dx)), 'cells are jumbled in x'
assert np.all(dy < np.zeros_like(dy)), 'cells are jumbled in y'
dx = x2[1:] - x2[:-1]
dy = y2[1:] - y2[:-1]
assert np.all(dx > np.zeros_like(dx)), 'new x nc not monotonic'
assert np.all(dy > np.zeros_like(dy)), 'new y nc not monotonic'
def main():
parser = argparse.ArgumentParser(description="Test calc")
parser.add_argument("--show", "--plot", action="store_true")
args = vutil.common_argparse(parser)
dtype = 'float32'
x = np.array(np.linspace(-5, 5, 512), dtype=dtype)
y = np.array(np.linspace(-5, 5, 256), dtype=dtype)
z = np.array(np.linspace(-5, 5, 256), dtype=dtype)
v = viscid.empty([x, y, z], name="V", nr_comps=3, center='node',
layout='interlaced')
X, Y, Z = v.get_crds_nc(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
logger.info("Testing node centered magnitudes")
run_mag_test(v, show=args.show)
logger.info("Testing cell centered magnitudes")
v = v.as_centered('cell')
run_mag_test(v, show=args.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 run_test(x, y, profile=False):
z = np.array([0.0])
fld_nc = viscid.empty([x, y, z],
center='node',
name="MyField",
pretty_name="My Field [Units]")
fld_cc = fld_nc.as_centered('cell')
x2, y2 = fld_cc.get_crds_nc('xy')
dx = x2[:-1] - x
dy = y2[:-1] - y
assert np.all(dx < np.zeros_like(dx)), 'cells are jumbled in x'
assert np.all(dy < np.zeros_like(dy)), 'cells are jumbled in y'
dx = x - x2[1:]
dy = y - y2[1:]
assert np.all(dx < np.zeros_like(dx)), 'cells are jumbled in x'
assert np.all(dy < np.zeros_like(dy)), 'cells are jumbled in y'
dx = x2[1:] - x2[:-1]
dy = y2[1:] - y2[:-1]
assert np.all(dx > np.zeros_like(dx)), 'new x nc not monotonic'
assert np.all(dy > np.zeros_like(dy)), 'new y nc not monotonic'
def make_scalar_fld():
x, y, z = make_grid()
f0 = viscid.empty((x, y, z), dtype=DTYPE, center='node')
f0.data = np.arange(np.prod(f0.shape)).astype(f0.dtype)
seeds = viscid.Volume(xl=XL, xh=XH, n=N)
return f0, seeds
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():
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 = "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=0f:0.15f'
# #################
# # 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=0f'], symmetric=True, earth=True)
plt.subplot(312, sharex=ax1, sharey=ax1)
vlt.plot(divb1['y=0f'], symmetric=True, earth=True)
plt.subplot(313, sharex=ax1, sharey=ax1)
vlt.plot(reldiff['y=0f'], 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=-40f:12f, y=-15f:15f, z=-15f:15f']
b_fc = f['b_fc']['x=-40f:12f, y=-15f:15f, z=-15f:15f']
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=0f'], 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=0f'], 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=0f'], clim=(-40, 40))
# plt.subplot(122, sharex=ax0, sharey=ax0)
# vlt.plot(b_fc['x']['y=0f'], clim=(-40, 40))
# vlt.show()
plt.figure(figsize=(14, 5))
ax0 = plt.subplot(131)
vlt.plot(epar_cc['y=0f'], symmetric=True, cbarlabel="Epar CC")
plt.subplot(132, sharex=ax0, sharey=ax0)
vlt.plot(epar_ecfc['y=0f'], symmetric=True, cbarlabel="Epar ECFC")
plt.subplot(133, sharex=ax0, sharey=ax0)
vlt.plot(((epar_cc - epar_ecfc) / epar_cc)['y=0f'],
clim=(-10, 10),
cbarlabel="Rel Diff")
vlt.auto_adjust_subplots()
vlt.show()
return 0
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 make_scalar_fld():
x, y, z = make_grid()
f0 = viscid.empty((x, y, z), dtype=DTYPE, center='node')
f0.data = np.arange(np.prod(f0.shape)).astype(f0.dtype)
seeds = viscid.Volume(xl=XL, xh=XH, n=N)
return f0, seeds
