def getimage(data, poss, temp, mass, hsml, num, norm, cmap):
print('There are', poss.shape[0], 'gas particles in the region')
# Set up particle objects
P1 = sph.Particles(poss, mass=temp * mass, hsml=hsml)
P2 = sph.Particles(poss, mass=mass, hsml=hsml)
# Initialise the scene
S1 = sph.Scene(P1)
S2 = sph.Scene(P2)
i = data[num]
i['xsize'] = 3840
i['ysize'] = 2160
i['roll'] = 0
S1.update_camera(**i)
S2.update_camera(**i)
R1 = sph.Render(S1)
R2 = sph.Render(S2)
R1.set_logscale()
R2.set_logscale()
img1 = R1.get_image()
img2 = R2.get_image()
img = img1 - img2
vmax = 7.5
vmin = 3.5
print("gas temperature", np.min(img), np.max(img))
# Convert images to rgb arrays
rgb = cmap(norm(img))
return rgb, R1.get_extent()
def myplot(x, y, nb=32, xsize=500, ysize=500):
"""This function reads in a set of data and smooths it using
nearest neighbors summing. It then outputs the smoothed data
with a measure of its extent. This output is then inputed to
Axes.imshow.
:param: x,y two columns of data such as particle positions
:param: nb smoothing size.
"""
xmin = np.min(x)
xmax = np.max(x)
ymin = np.min(y)
ymax = np.max(y)
x0 = (xmin + xmax) / 2.
y0 = (ymin + ymax) / 2.
pos = np.zeros([3, len(x)])
pos[0, :] = x
pos[1, :] = y
w = np.ones(len(x))
P = sph.Particles(pos, w, nb=nb)
S = sph.Scene(P)
S.update_camera(r='infinity', x=x0, y=y0, z=0, xsize=xsize, ysize=ysize)
R = sph.Render(S)
R.set_logscale()
img = R.get_image()
extent = R.get_extent()
for i, j in zip(xrange(4), [x0, x0, y0, y0]):
extent[i] += j
print extent, x0, y0
return img, extent
def getimage_stars(data, poss, mass, hsml, num, max_pixel, cmap, Type="gas"):
print('There are', poss.shape[0], 'gas particles in the region')
# Set up particle objects
P = sph.Particles(poss, mass=mass, hsml=hsml)
print(np.min(mass))
# Initialise the scene
S = sph.Scene(P)
i = data[num]
i['xsize'] = 3840
i['ysize'] = 2160
i['roll'] = 0
S.update_camera(**i)
R = sph.Render(S)
R.set_logscale()
img = R.get_image()
img = ndimage.gaussian_filter(img, sigma=(3, 3), order=0)
if Type == "gas":
vmax = 11
vmin = 6
print("gas", np.max(img))
else:
vmax = 13
vmin = 7.5
print("star", np.max(img))
# Convert images to rgb arrays
rgb = cmap(get_normalised_image(img, vmin=vmin, vmax=vmax))
return rgb, R.get_extent()
def myplot(x, y, nb=32, xsize=500, ysize=500): xmin = np.min(x) xmax = np.max(x) ymin = np.min(y) ymax = np.max(y) print xmin, xmax, ymin, ymax x0 = (xmin+xmax)/2. y0 = (ymin+ymax)/2. pos = np.zeros([3, len(x)]) pos[0,:] = x pos[1,:] = y w = np.ones(len(x)) P = sph.Particles(pos, w, nb=nb) S = sph.Scene(P) S.update_camera(r='infinity', x=x0, y=y0, z=0, xsize=xsize, ysize=ysize) R = sph.Render(S) R.set_logscale() img = R.get_image() extent = R.get_extent() for i, j in zip(xrange(4), [x0,x0,y0,y0]): extent[i] += j #print extent return img, extent
def plot_sph(x: pd.Series,
y: pd.Series,
w: pd.Series,
nb=32,
xsize=1000,
ysize=1000):
x_min = np.min(x)
x_max = np.max(x)
y_min = np.min(y)
y_max = np.max(y)
x0 = np.average((x_min, x_max))
y0 = np.average((y_min, y_max))
pos = np.zeros([len(df), 3])
pos[:, 0] = x
pos[:, 1] = y
w = w.to_numpy() * 100
particles = sph.Particles(pos, mass=w, nb=nb)
scene = sph.Scene(particles)
scene.update_camera(r="infinity",
x=x0,
y=y0,
z=0,
xsize=xsize,
ysize=ysize)
render = sph.Render(scene)
render.set_logscale()
img = render.get_image()
extent = render.get_extent()
for i, j in zip(range(4), [x0, x0, y0, y0]):
extent[i] += j
return img, extent
def getimage(data, poss, hsml, num, boxsize):
print('There are', poss.shape[0], 'dark matter particles in the region')
# Set up particle objects
P = sph.Particles(poss, mass=np.ones(poss.shape[0]), hsml=hsml)
# Initialise the scene
S = sph.Scene(P)
i = data[num]
i['xsize'] = int(boxsize / hsml.max())
i['ysize'] = int(boxsize / hsml.max())
i['roll'] = 0
S.update_camera(**i)
R = sph.Render(S)
R.set_logscale()
img = R.get_image()
vmax = 7
vmin = 1
# Get colormaps
cmap = cmaps.twilight()
print(img.max())
# Convert images to rgb arrays
rgb = cmap(get_normalised_image(img, vmin=vmin, vmax=vmax))
return rgb, R.get_extent()
def plot_dist(fig, ax,P,coods,cmap,
vmin=1e-4,vmax=None,extent=300,
p=0,t=0,roll=0):
C = sph.Camera(x=coods[0], y=coods[1], z=coods[2],
r='infinity', zoom=1,
t=t, p=p, roll=roll,
extent=[-extent,extent,-extent,extent],
xsize=512, ysize=512)
S = sph.Scene(P, Camera=C)
R = sph.Render(S)
#R.set_logscale()
img = R.get_image()
# img = img / img.mean()
if vmax is None:
vmax = img.max()
if vmin > vmax:
print("vmin larger than vmax! Setting lower")
vmin = img.max() / 10
print("vmin,vmax:",vmin,vmax)
cNorm = colors.LogNorm(vmin=vmin,vmax=vmax)
sm = cm.ScalarMappable(norm=cNorm, cmap=cmap)
ax.imshow(img, extent=[-extent,extent,-extent,extent],
cmap=cmap, norm=cNorm)
return sm,img
def getimage(data, poss, mass, hsml, num, max_pixel, cmap, Type="gas"):
print('There are', poss.shape[0], 'gas particles in the region')
# Set up particle objects
P = sph.Particles(poss, mass=mass, hsml=hsml)
print(np.min(mass))
# Initialise the scene
S = sph.Scene(P)
i = data[num]
i['xsize'] = 5000
i['ysize'] = 5000
i['roll'] = 0
S.update_camera(**i)
R = sph.Render(S)
R.set_logscale()
img = R.get_image()
if Type == "gas":
vmax =11
vmin = 6
print("gas", np.max(img))
# Convert images to rgb arrays
rgb = cmap(get_normalised_image(img, vmin=vmin, vmax=vmax))
else:
vmax = 21.6
vmin = 15.0
print("star", np.min(img[img != 0]), np.max(img))
rgb = img
return rgb, R.get_extent()
def plot_ledlow_contours(t, world2pixel, ngb=12, xsize=500, ysize=500):
""" Smooth galaxy positions of Ledlow+ (2005) to get contour lines
@param t : astropy.table.Table holding Ledlow data
@param world2pixel : aplpy.FITSFigure world2pixel function to map
RA,dec coordinates to Chandra mosaic pixels
@param ngb : number of neighbours to smooth over
@param xsize, ysize: size of the image (resolution?)
@return : img, extent """
ra = 15 * astropy.coordinates.Angle(t['RAJ2000'].filled(numpy.nan),
unit=u.degree)
dec = astropy.coordinates.Angle(t['DEJ2000'].filled(numpy.nan),
unit=u.degree)
ra, dec = world2pixel(ra,
dec) # convert ra, dec to xray mosaic pixel values
# Perform kernel density estimate
# https://docs.scipy.org/doc/scipy-0.18.1/reference/generated/scipy.stats.gaussian_kde.html
# X, Y = numpy.mgrid[xmax:xmin:300j, ymin:ymax:3000j]
# positions = numpy.vstack([X.ravel(), Y.ravel()])
# values = numpy.vstack([ra, dec])
# kernel = kde.gaussian_kde(values)
# Z = numpy.reshape(kernel(positions).T, X.shape)
# Z /= ((41.1-40.6)*60*(20.025-19.50)*60)
# pyplot.imshow(numpy.rot90(Z), cmap=pyplot.cm.gist_earth_r,
# extent=[xmax, xmin, ymin, ymax])
# cset = pyplot.contour(X, Y, Z, colors="w",
# levels=numpy.array([1,2,3,5,8,10])*Z.max()/10)
# pyplot.clabel(cset, inline=1, fontsize=10)
# https://stackoverflow.com/questions/2369492
xmin, xmax = ra.min(), ra.max()
ymin, ymax = dec.min(), dec.max()
x0 = (xmin + xmax) / 2.
y0 = (ymin + ymax) / 2.
pos = numpy.zeros([3, len(ra)])
pos[0, :] = ra
pos[1, :] = dec
w = numpy.ones(len(ra))
P = sphviewer.Particles(pos, w, nb=ngb)
S = sphviewer.Scene(P)
S.update_camera(r="infinity", x=x0, y=y0, z=0, xsize=xsize, ysize=ysize)
R = sphviewer.Render(S)
img = R.get_image()
extent = R.get_extent()
for i, j in zip(xrange(4), [x0, x0, y0, y0]):
extent[i] += j
img = 10 * img / numpy.max(img)
return img, extent
def image(self, x=0.,
y=0.,
z=0.,
theta=45.,
phi=0.,
extent=400.,
resolution=1024,
camera_distance='infinity',
save=True,
show=True,
path='/home/arijdav1/Dropbox/phd/figures/sph_pics/'):
px_size = extent / float(resolution) # in kpc
px_size_pc = px_size * 1e3
self.Scene.update_camera(x=x, y=y, z=z, r=camera_distance, t=theta, p=phi,
extent=[-extent, extent, -extent, extent], xsize=resolution, ysize=resolution)
Render = sphviewer.Render(self.Scene)
Render.set_logscale()
extent = Render.get_extent()
img = Render.get_image()
if self.property == 'xrays':
img += 30.
img -= np.log10(px_size_pc ** 2)
vmin = np.amin(img[np.isfinite(img)])
vmax = np.amax(img[np.isfinite(img)])
if self.property == 'stars':
vmin = 0.
if self.property == 'gas':
vmin = -0.3
if self.property == 'hotgas':
vmin = 0.
# if self.property == 'xrays':
# vmin = 0.
fig = plt.figure(1, figsize=(20, 20))
ax1 = fig.add_subplot(111)
im1 = plt.imshow(img, extent=extent, origin='lower', cmap=self.cmap, vmin=vmin, vmax=vmax)
divider = make_axes_locatable(ax1)
cax = divider.append_axes("right", size="5%", pad=0.15)
col = plt.colorbar(im1, cax=cax)
col.set_label(self.axlab, fontsize=16)
if save:
plt.savefig(path + 'group' + str(self.groupnumber) + '_' + self.property + '_t%03d' % (theta) + '_p%03d' % (
phi) + '.png')
if show:
plt.show()
plt.close()
def getimage(data, poss, hsml, num, z, cmap):
print('There are', poss.shape[0], 'dark matter particles in the region')
# Set up particle objects
P = sph.Particles(poss, mass=np.ones(poss.shape[0]), hsml=hsml)
# Initialise the scene
S = sph.Scene(P)
i = data[num]
i['xsize'] = 3840
i['ysize'] = 2160
i['roll'] = 0
S.update_camera(**i)
print("Scene")
R = sph.Render(S)
print("Render")
R.set_logscale()
print("Logscale")
img = R.get_image()
print("Image")
print(img.max(),
np.percentile(img, 99.99),
np.percentile(img, 95),
np.percentile(img, 90),
np.percentile(img, 67.5),
np.percentile(img, 50))
vmax = 6.9
vmin = 0.1
# # Get colormaps
# cmap2 = cmr.torch_r(np.linspace(0, 1, 128))
# cmap3 = cmr.swamp(np.linspace(0, 1, 128))
#
# # combine them and build a new colormap
# colors = np.vstack((cmap2, cmap3))
# cmap = mcolors.LinearSegmentedColormap.from_list('colormap', colors)
hex_list = ["#000000", "#590925", "#6c1c55", "#7e2e84", "#ba4051",
"#f6511d", "#ffb400", "#f7ec59", "#fbf6ac", "#ffffff"]
#cmap = get_continuous_cmap(hex_list, float_list=None)
img = ndimage.gaussian_filter(img, sigma=(3, 3), order=0)
# Convert images to rgb arrays
rgb = cmap(get_normalised_image(img, vmin=vmin, vmax=vmax))
return rgb, R.get_extent()
def __init__(self,
pos,
mass=None,
hsml=None,
nb=None,
logscale=True,
plot=True,
min_hsml=None,
max_hsml=None,
**kwargs):
if (mass is None):
mass = np.ones(len(pos[0, :]))
if (nb == None):
self._P = sph.Particles(pos, mass, hsml)
else:
self._P = sph.Particles(pos, mass, hsml, nb)
if ((min_hsml is not None) or (max_hsml is not None)):
hsml = self.get_hsml()
if (min_hsml is not None):
min_hsml = min_hsml
else:
min_hsml = np.min(hsml)
if (max_hsml is not None):
max_hsml = max_hsml
else:
max_hsml = np.max(hsml)
hsml = np.clip(hsml, min_hsml, max_hsml)
print 'Limiting smoothing lenght to the range [%.3f,%.3f]' % (
min_hsml, max_hsml)
self._P.set_hsml(hsml)
self._S = sph.Scene(self._P)
self._S.update_camera(**kwargs)
self._R = sph.Render(self._S)
if (logscale):
self._R.set_logscale()
self._img = self._R.get_image()
self._extent = self._R.get_extent()
if (plot):
self.imshow(aspect='auto')
return
else:
return
def getimage(snap, num, data, part_type, overwrite=False, P=None, S=None):
if overwrite:
i = data[num]
i['xsize'] = 5000
i['ysize'] = 5000
i['roll'] = 0
S.update_camera(**i)
R = sph.Render(S)
R.set_logscale()
img = R.get_image()
extent = R.get_extent()
np.save('animationdata/ptype%s_animationdata_reg%s_snap%s_angle%05d.npy'%(part_type,reg,snap,num), img)
else:
img = np.load('animationdata/ptype%s_animationdata_reg%s_snap%s_angle%05d.npy'%(part_type,reg,snap,num))
extent = [-45,45,45,-45]
return img, extent
for i in range(0, N_StePS):
if StePS_coordinates[i, 2] > -alpha and StePS_coordinates[
i,
2] < alpha and plot_R_limit > np.sqrt(StePS_coordinates[i, 0]**2 +
StePS_coordinates[i, 1]**2 +
StePS_coordinates[i, 2]**2):
StePS_slice[j, 0] = StePS_coordinates[i, 0]
StePS_slice[j, 1] = StePS_coordinates[i, 1]
StePS_slice[j, 2] = StePS_coordinates[i, 2]
StePS_slice[j, 3] = StePS_coordinates[i, 3]
j += 1
end = time.time()
print("..done in %fs. \n\n" % (end - start))
cmap = 'inferno'
extent = [-R_plot, R_plot, -R_plot, R_plot]
Particles = sph.Particles(StePS_slice[:, 0:3].T, StePS_slice[:, 3].T)
Scene = sph.Scene(Particles)
Scene.update_camera(r='infinity', extent=extent)
Render = sph.Render(Scene)
Render.set_logscale()
img = Render.get_image()
fig = plt.figure(1, figsize=(6, 6))
ax1 = fig.add_subplot(111)
ax1.imshow(img, extent=extent, origin='lower', cmap=cmap)
ax1.set_xlabel('x[Mpc]', size=10)
ax1.set_ylabel('y[Mpc]', size=10)
plt.title(title)
plt.show()
Particles = sphviewer.Particles(pos, quantity, hsml=smoothing_length)
Scene = sphviewer.Scene(Particles)
phi_list = np.arange(0., 359., 1)
for p, phi in tqdm(enumerate(phi_list)):
Scene.update_camera(x=0.,
y=0.,
z=0.,
r='infinity',
t=45.,
p=phi,
extent=[-ext, ext, -ext, ext],
xsize=res,
ysize=res)
Render = sphviewer.Render(Scene)
Render.set_logscale()
img = Render.get_image()
img -= np.log10(px_size_pc**2)
if p == 0:
vmin = np.amin(img)
vmax = np.amax(img)
if prop == 'stars':
vmin = -0.5
extent = Render.get_extent()
fig = plt.figure(1, figsize=(8, 8))
ax1 = fig.add_subplot(111)
def image(
self,
gn,
centre, # coordinates must be in kpc!
theta=0.,
phi=0.,
extent=1024.,
vmax=None,
vmin=None,
resolution=1024,
camera_distance='infinity',
cmap=None,
cbar_loc='right',
cbarpad=-80.,
showaxes=False,
save=True,
show=True,
set_contrast=True,
path='/home/arijdav1/Dropbox/phd/figures/sph_pics/columndensity/',
fname=None,
imageonly=False,
circleradius=None,
scalebar_size=None,
scalebar_colour=None,
redshift_label=False,
framenumber=0,
returnarray=False):
if os.path.exists(path) == False:
os.makedirs(path)
if camera_distance == 'infinity':
px_size = 2 * extent / float(resolution) # in kpc
px_size *= 1e3
mass_units = '$M_{\odot}$ $\mathrm{pc}^{-2}$'
ion_units = r'${\rm g \, cm}^{-2}$'
lum_units = '$\mathrm{erg}$ $\mathrm{s}^{-1}$ $\mathrm{pc}^{-2}$'
else:
px_size = (90. / float(resolution)) * 60. # in arcmin
mass_units = '$M_{\odot}$ $\mathrm{arcmin}^{-2}$'
lum_units = '$\mathrm{erg}$ $\mathrm{s}^{-1}$ $\mathrm{arcmin}^{-2}$'
if self.property == 'gas':
if cmap == None:
cmap = 'afmhot'
axlab = r'$\log\Sigma_g$ [%s]' % (mass_units)
elif self.property == 'entropy':
if cmap == None:
cmap = 'nipy_spectral'
axlab = r'entropy'
elif self.property == 'xrays':
if cmap == None:
cmap = 'inferno'
axlab = r'$\log\Sigma_{X,\mathrm{0.5-2keV}}$ [%s]' % (lum_units)
elif self.property == 'stars':
if cmap == None:
cmap = 'bone'
axlab = r'$\log\Sigma_*$ [%s]' % (mass_units)
else:
raise IOError('Plot options are "gas", "stars" or "xrays"')
if self.Scene is not None:
if camera_distance == 'infinity':
if self.property in [
'entropy',
]:
self.weightScene.update_camera(
x=centre[0],
y=centre[1],
z=centre[2],
r='infinity',
t=theta,
p=phi,
extent=[-extent, extent, -extent, extent],
xsize=resolution,
ysize=resolution)
self.propScene.update_camera(
x=centre[0],
y=centre[1],
z=centre[2],
r='infinity',
t=theta,
p=phi,
extent=[-extent, extent, -extent, extent],
xsize=resolution,
ysize=resolution)
else:
self.Scene.update_camera(
x=centre[0],
y=centre[1],
z=centre[2],
r='infinity',
t=theta,
p=phi,
extent=[-extent, extent, -extent, extent],
xsize=resolution,
ysize=resolution)
else:
self.Scene.update_camera(x=x,
y=y,
z=z,
r=camera_distance,
t=theta,
p=phi,
xsize=resolution,
ysize=resolution)
if not self.quiet:
print 'Rendering image...'
if self.property in [
'entropy',
]:
Render = sphviewer.Render(self.propScene)
propRender = Render.get_image()
Render = sphviewer.Render(self.weightScene)
weightRender = Render.get_image()
rendered_img = propRender / weightRender # weighted mean of property in each pixel
# fig,ax = plt.subplots(1,figsize=(1,1))
# plt.tick_params(axis='x',which='both',bottom='off',top='off')
# plt.tick_params(axis='y',which='both',left='off',right='off')
# im1 = ax.imshow(np.log10(rendered_img), cmap=cmap, origin='lower')
# divider = make_axes_locatable(ax)
# cax = divider.append_axes("right", size="5%", pad=0.15)
# col = plt.colorbar(im1, cax=cax)
# plt.show()
# return
else:
Render = sphviewer.Render(self.Scene)
rendered_img = Render.get_image()
extent = Render.get_extent()
if returnarray == True:
# Return the raw array in crazy altered by 1e20 or 1e30 units, not sure if other codes depend on this
return rendered_img
img = deepcopy(rendered_img)
img[img == 0.] = 1e-10
img = np.log10(img)
if self.property == 'xrays':
img += 30.
if self.property == 'gas':
img += 20.
if self.property not in [
'entropy',
]:
img -= np.log10(px_size**2)
if camera_distance == 'infinity':
# If you don't know the dynamic range, set the defaults and make them callable
if set_contrast:
if self.property == 'stars':
self.vmin = -1.5
elif self.property == 'gas':
self.vmin = -1.5
elif self.property == 'xrays':
self.vmin = 22.5
self.vmax = np.amax(img[np.isfinite(img)])
if self.property == 'entropy':
self.vmin = np.amin(img[np.isfinite(img)])
self.vmax = np.amax(img[np.isfinite(img)])
elif not set_contrast and vmax == None or vmin == None:
print 'Please use set_contrast or specify a vmax and vmin'
exit()
else:
if set_contrast:
minim = np.amin(img[np.isfinite(img)])
maxim = np.amax(img[np.isfinite(img)])
self.vmax = maxim
if self.property == 'stars':
self.vmin = np.percentile(
np.linspace(minim, maxim, 100), 72)
elif self.property == 'gas':
self.vmin = np.percentile(
np.linspace(minim, maxim, 100), 25)
elif self.property == 'xrays':
self.vmin = 22.5
elif not set_contrast and vmax == None or vmin == None:
print 'Please use set_contrast or specify a vmax and vmin'
exit()
if vmax == None:
vmax = self.vmax
if vmin == None:
vmin = self.vmin
else:
img = np.full((resolution, resolution), 0.)
vmax = 1.
vmin = 0.
if imageonly: # save the img array as a picture with no colourbars etc, at right resolution
if fname == None:
savepath = path + self.sim + '_snap%03d'%(self.snapnum) + '_group' + str(gn) + '_' +\
self.property + '_ext%0d' % (extent[1]) +\
'_t%03d' % (theta) + '_p%03d' % (phi) + '_noborder.png'
else:
savepath = path + fname
fig = plt.figure(figsize=(1, 1))
ax = fig.add_axes([0, 0, 1, 1])
plt.tick_params(axis='x', which='both', bottom='off', top='off')
plt.tick_params(axis='y', which='both', left='off', right='off')
im1 = ax.imshow(img,
vmin=vmin,
vmax=vmax,
cmap=cmap,
origin='lower')
if redshift_label:
ax.text(0.95,
0.9,
r'$z=%.1f$' % (self.z),
verticalalignment='bottom',
horizontalalignment='right',
transform=ax.transAxes,
color='white',
fontsize=3)
if circleradius != None:
ax.add_artist(
plt.Circle((0, 0),
circleradius,
fc='none',
edgecolor='w',
lw=2,
ls='--'))
if scalebar_size != None:
ob = AnchoredHScaleBar(size=scalebar_size,
label="",
ax=ax,
loc=4,
frameon=False,
pad=0.6,
sep=4,
color=scalebar_colour)
ax.add_artist(ob)
if not showaxes:
ax.axes.get_xaxis().set_visible(False)
ax.axes.get_yaxis().set_visible(False)
plt.savefig(savepath, dpi=resolution)
if show:
plt.show()
plt.close(fig)
return
fig = plt.figure()
ax1 = fig.add_subplot(111)
im1 = plt.imshow(img,
extent=extent,
origin='lower',
cmap=cmap,
vmin=vmin,
vmax=vmax)
divider = make_axes_locatable(ax1)
if cbar_loc == 'top':
cax = divider.append_axes("top", size="5%", pad=0.)
col = plt.colorbar(im1, cax=cax, orientation='horizontal')
col.ax.xaxis.set_ticks_position('top')
caxticks = col.ax.xaxis.get_major_ticks()
caxticks[0].label2.set_visible(False)
caxticks[-1].label2.set_visible(False)
col.set_label(axlab, labelpad=cbarpad, fontsize=24)
cax.tick_params(axis='both', which='major', labelsize=16)
else:
cax = divider.append_axes("right", size="5%", pad=0.15)
col = plt.colorbar(im1, cax=cax)
col.set_label(axlab, fontsize=16)
if not showaxes:
ax1.axes.get_xaxis().set_visible(False)
ax1.axes.get_yaxis().set_visible(False)
if circleradius != None:
ax1.add_artist(
plt.Circle((0, 0),
circleradius,
fc='none',
edgecolor='w',
lw=2,
ls='--'))
if scalebar_size != None:
ob = AnchoredHScaleBar(size=scalebar_size,
label="",
ax=ax1,
loc=4,
frameon=False,
pad=0.6,
sep=4,
color=scalebar_colour)
ax1.add_artist(ob)
if scalebar_size >= 1000.:
sb_label = '%.0f Mpc' % (scalebar_size / 1000.)
else:
sb_label = '%.0f kpc' % (scalebar_size)
#ax1.text(0.63*extent[1],-0.82*extent[1],sb_label,color=scalebar_colour,fontsize=16)
if save:
DPI = fig.get_dpi()
#DPI = 1024.
fig.set_size_inches(1024.0 / float(DPI),
1080.0 / float(DPI)) # for colorbar
if fname == None:
savepath = path + self.sim + '_snap%03d'%(self.snapnum) + '_group' + str(gn) + '_' +\
self.property + '_ext%0d' % (extent[1]) +\
'_t%03d' % (theta) + '_p%03d' % (phi) + '_noborder.png'
else:
savepath = path + fname
plt.savefig(savepath, pad_inches=0.0, dpi='figure')
if show:
plt.show()
plt.close()
return img
def image(self, gn, x, y, z, # coordinates must be in kpc!
theta=0.,
phi=0.,
extent=400.,
vmax = None,
vmin = None,
resolution=1024,
camera_distance='infinity',
cmap = None,
save=True,
show=True,
set_contrast = True,
path='/home/arijdav1/Dropbox/phd/figures/sph_pics/',
movieflag=False,
framenumber=0):
if os.path.exists(path) == False:
os.makedirs(path)
if camera_distance == 'infinity':
px_size = 2*extent / float(resolution) # in kpc
px_size *= 1e3
mass_units = '$M_{\odot}$ $\mathrm{pc}^{-2}$'
lum_units = '$\mathrm{erg}$ $\mathrm{s}^{-1}$ $\mathrm{pc}^{-2}$'
else:
px_size = (90./float(resolution))*60. # in arcmin
mass_units = '$M_{\odot}$ $\mathrm{arcmin}^{-2}$'
lum_units = '$\mathrm{erg}$ $\mathrm{s}^{-1}$ $\mathrm{arcmin}^{-2}$'
if self.property == 'gas':
if cmap==None:
cmap = 'afmhot'
axlab = r'$\log\Sigma_g$ [%s]'%(mass_units)
elif self.property == 'xrays':
if cmap==None:
cmap = 'inferno'
axlab = r'$\log\Sigma_{X,\mathrm{0.5-2keV}}$ [%s]'%(lum_units)
elif self.property == 'stars':
if cmap==None:
cmap = 'bone'
axlab = r'$\log\Sigma_*$ [%s]'%(mass_units)
else:
raise IOError('Plot options are "gas", "stars" or "xrays"')
if camera_distance == 'infinity':
self.Scene.update_camera(x=x, y=y, z=z, r='infinity', t=theta, p=phi,
extent=[-extent, extent, -extent, extent], xsize=resolution, ysize=resolution)
else:
self.Scene.update_camera(x=x, y=y, z=z, r=camera_distance, t=theta, p=phi,
xsize=resolution, ysize=resolution)
Render = sphviewer.Render(self.Scene)
#Render.set_logscale()
extent = Render.get_extent()
rendered_img = Render.get_image()
img = deepcopy(rendered_img)
img[img==0.] = 1e-10
img = np.log10(img)
if self.property == 'xrays':
img += 30.
if self.property == 'gas':
img += 20.
img -= np.log10(px_size ** 2)
if camera_distance == 'infinity':
# If you don't know the dynamic range, set the defaults and make them callable
if set_contrast:
if self.property == 'stars':
self.vmin = -1.5
elif self.property == 'gas':
self.vmin = -1.5
elif self.property == 'xrays':
self.vmin = 22.5
self.vmax = np.amax(img[np.isfinite(img)])
elif not set_contrast and vmax==None or vmin==None:
print 'Please use set_contrast or specify a vmax and vmin'
exit()
else:
if set_contrast:
minim = np.amin(img[np.isfinite(img)])
maxim = np.amax(img[np.isfinite(img)])
self.vmax = maxim
if self.property == 'stars':
self.vmin = np.percentile(np.linspace(minim,maxim,100),72)
elif self.property == 'gas':
self.vmin = np.percentile(np.linspace(minim,maxim,100),25)
elif self.property == 'xrays':
self.vmin = 22.5
elif not set_contrast and vmax==None or vmin==None:
print 'Please use set_contrast or specify a vmax and vmin'
exit()
if vmax == None:
vmax = self.vmax
if vmin == None:
vmin = self.vmin
inches = np.floor((resolution+500.)/100.)
fig = plt.figure(1, figsize=(inches,inches))
ax1 = fig.add_subplot(111)
im1 = plt.imshow(img, extent=extent, origin='lower', cmap=cmap, vmin=vmin, vmax=vmax)
divider = make_axes_locatable(ax1)
cax = divider.append_axes("right", size="5%", pad=0.15)
col = plt.colorbar(im1, cax=cax)
col.set_label(axlab, fontsize=16)
if save:
if movieflag:
plt.savefig(path+'frame%s'%(str(framenumber))+'.png',bbox_inches='tight')
else:
plt.savefig(path + 'group' + str(gn) + '_' +\
self.property + '_ext%0d' % (extent[1]) +\
'_t%03d' % (theta) + '_p%03d' % (phi) + '.png',bbox_inches='tight')
if show:
plt.show()
plt.close()
def image(self, gn, centre, # coordinates must be in kpc!
theta=0.,
phi=0.,
align = None,
extent=400.,
vmax = None,
vmin = None,
resolution=1024,
camera_distance='infinity',
cmap = None,
save=True,
show=True,
set_contrast = True,
path='/home/arijdav1/Dropbox/phd/figures/sph_pics/',
movieflag=False,
circleradius = None,
scalebar_size = None,
scalebar_colour = None,
framenumber=0,
returnarray=False):
if align != None: # make sure the alignment isn't ruined by too many inputs
theta = 0.
phi = 0.
if os.path.exists(path) == False:
os.makedirs(path)
if camera_distance == 'infinity':
px_size = 2*extent / float(resolution) # in kpc
px_size *= 1e3
mass_units = '$M_{\odot}$ $\mathrm{pc}^{-2}$'
lum_units = '$\mathrm{erg}$ $\mathrm{s}^{-1}$ $\mathrm{pc}^{-2}$'
else:
px_size = (90./float(resolution))*60. # in arcmin
mass_units = '$M_{\odot}$ $\mathrm{arcmin}^{-2}$'
lum_units = '$\mathrm{erg}$ $\mathrm{s}^{-1}$ $\mathrm{arcmin}^{-2}$'
if self.property == 'gas':
if cmap==None:
cmap = 'afmhot'
axlab = r'$\log\Sigma_g$ [%s]'%(mass_units)
elif self.property == 'xrays':
if cmap==None:
cmap = 'inferno'
axlab = r'$\log\Sigma_{X,\mathrm{0.5-2keV}}$ [%s]'%(lum_units)
elif self.property == 'stars':
if cmap==None:
cmap = 'bone'
axlab = r'$\log\Sigma_*$ [%s]'%(mass_units)
else:
raise IOError('Plot options are "gas", "stars" or "xrays"')
if camera_distance == 'infinity':
self.Scene.update_camera(x=centre[0], y=centre[1], z=centre[2], r='infinity', t=theta, p=phi,
extent=[-extent, extent, -extent, extent], xsize=resolution, ysize=resolution)
else:
self.Scene.update_camera(x=x, y=y, z=z, r=camera_distance, t=theta, p=phi,
xsize=resolution, ysize=resolution)
if align == 'face' or align == 'edge':
angles = self.get_alignment(gn)
rot_x = angles[0][0]
rot_y = angles[0][1]
rot_z = angles[0][2]
print rot_x
print rot_y
print rot_z
#self.Scene.update_camera(p=-1.*(90.+phi_J))
self.Scene.update_camera(t=rot_x,p=rot_y,roll=rot_z)
print 'Rendering image...'
Render = sphviewer.Render(self.Scene)
#Render.set_logscale()
extent = Render.get_extent()
rendered_img = Render.get_image()
if returnarray == True:
return rendered_img
img = deepcopy(rendered_img)
img[img==0.] = 1e-10
img = np.log10(img)
if self.property == 'xrays':
img += 30.
if self.property == 'gas':
img += 20.
img -= np.log10(px_size ** 2)
if camera_distance == 'infinity':
# If you don't know the dynamic range, set the defaults and make them callable
if set_contrast:
if self.property == 'stars':
self.vmin = -1.5
elif self.property == 'gas':
self.vmin = -1.5
elif self.property == 'xrays':
self.vmin = 22.5
self.vmax = np.amax(img[np.isfinite(img)])
elif not set_contrast and vmax==None or vmin==None:
print 'Please use set_contrast or specify a vmax and vmin'
exit()
else:
if set_contrast:
minim = np.amin(img[np.isfinite(img)])
maxim = np.amax(img[np.isfinite(img)])
self.vmax = maxim
if self.property == 'stars':
self.vmin = np.percentile(np.linspace(minim,maxim,100),72)
elif self.property == 'gas':
self.vmin = np.percentile(np.linspace(minim,maxim,100),25)
elif self.property == 'xrays':
self.vmin = 22.5
elif not set_contrast and vmax==None or vmin==None:
print 'Please use set_contrast or specify a vmax and vmin'
exit()
if vmax == None:
vmax = self.vmax
if vmin == None:
vmin = self.vmin
inches = np.floor((resolution+500.)/100.)
fig = plt.figure(1, figsize=(inches,inches))
ax1 = fig.add_subplot(111)
im1 = plt.imshow(img, extent=extent, origin='lower', cmap=cmap, vmin=vmin, vmax=vmax)
divider = make_axes_locatable(ax1)
cax = divider.append_axes("right", size="5%", pad=0.15)
col = plt.colorbar(im1, cax=cax)
col.set_label(axlab, fontsize=16)
if circleradius != None:
ax1.add_artist(plt.Circle((0,0),circleradius,fc='none',edgecolor='green',lw=2,ls='--'))
if scalebar_size != None:
ob = AnchoredHScaleBar(size=scalebar_size, label="", ax=ax1, loc=4, frameon=False, pad=0.6,sep=4,color=scalebar_colour)
ax1.add_artist(ob)
if scalebar_size>=1000.:
sb_label = '%.0f Mpc'%(scalebar_size/1000.)
else:
sb_label = '%.0f kpc'%(scalebar_size)
#ax1.text(0.63*extent[1],-0.82*extent[1],sb_label,color=scalebar_colour,fontsize=16)
if save:
if movieflag:
plt.savefig(path+'frame%s'%(str(framenumber))+'.png',bbox_inches='tight')
else:
plt.savefig(path + self.sim + '_snap' + str(self.snapnum) + '_group' + str(gn) + '_' +\
self.property + '_ext%0d' % (extent[1]) +\
'_t%03d' % (theta) + '_p%03d' % (phi) + '.png',bbox_inches='tight',dpi=400)
if show:
plt.show()
plt.close()
cmap = 'hot'
axlab = r'$\log\Sigma_g$ [$M_{\odot}$ $\mathrm{kpc}^{-2}]$'
elif prop == 'xrays':
cmap = 'gnuplot'
axlab = r'$\log\Sigma_{X,\mathrm{0.5-2keV}}$ [$\mathrm{erg}$ $\mathrm{s}^{-1}$ $\mathrm{kpc}^{-2}]$'
elif prop == 'stars':
cmap = 'bone'
axlab = r'$\log\Sigma_*$ [$M_{\odot}$ $\mathrm{kpc}^{-2}]$'
else:
raise IOError('Plot options are "gasmass", "stars", "temperature" or "xrays"')
Particles = sphviewer.Particles(pos,quantity,hsml=smoothing_length)
Scene = sphviewer.Scene(Particles)
Scene.update_camera(x=0.,y=0.,z=0.,r='infinity',t=90.,extent=[-ext,ext,-ext,ext],xsize=res,ysize=res)
Render = sphviewer.Render(Scene)
#Render.set_logscale()
img = Render.get_image()
sdensity_img = img/px_size**2
'''
# For quickly viewing the individual images
extent = Render.get_extent()
plt.figure()
plt.imshow(sdensity_img,cmap='hot',extent=extent, origin='lower')
plt.show()
'''
'''
fig = plt.figure(1,figsize=(5,5))
def __init__(self,
pos,
mass=None,
hsml=None,
nb=None,
logscale=True,
plot=True,
min_hsml=None,
max_hsml=None,
**kwargs):
"""
Quickview is a simple wrapper of the sphviewer API.
This utility stores the particles, defines the Scene and the Camera, and produces the rendering of the Scene in one step, thus making the process of producing images of SPH particles easy and quick.
The arguments of the functions are:
- pos = SPH particle positions. Array of shape [N,3], where N in the
number of particles and pos[:,0] = x; pos[:,1] = y; pos[:,2] = z.
- mass (optional): is the mass of the SPH particles. If present,
it must be an array of size N. If absent, a constant value,
mass = 1, will be assumed for all particles.
- hsml (optional): this is an array containing the smoothing lenghts
of the SPH particles. The absence of the array will trigger the
calculation of the smoothing lenghts.
- nb (optional): number of neighbours to be used for the calculation
of the SPH smoothing lengths. If absent, the default value nb=32 will
be used. This arguement is ignored if the array hsml is provided.
- logscale (optional): If True, the output image becomes
out_log = log10(1.0+output)
- plot (optional): If true, QuickView will plot the resulting image in
the current active figure.
- min_hsml / max_hsml: Physical values of the minimum / maximum
smoothing lengths. Only used when defined.
**kwargs
These include the parameters of the Camera:
"""
if (mass is None):
mass = np.ones(len(pos))
if (nb == None):
self._P = sph.Particles(pos, mass, hsml)
else:
self._P = sph.Particles(pos, mass, hsml, nb)
if ((min_hsml is not None) or (max_hsml is not None)):
hsml = self.get_hsml()
if (min_hsml is not None):
min_hsml = min_hsml
else:
min_hsml = np.min(hsml)
if (max_hsml is not None):
max_hsml = max_hsml
else:
max_hsml = np.max(hsml)
hsml = np.clip(hsml, min_hsml, max_hsml)
print('Limiting smoothing length to the range '
'[%.3f,%.3f]' % (min_hsml, max_hsml))
self._P.set_hsml(hsml)
self._S = sph.Scene(self._P)
self._S.update_camera(**kwargs)
self._R = sph.Render(self._S)
if (logscale):
self._R.set_logscale()
self._img = self._R.get_image()
self._extent = self._R.get_extent()
if (plot):
self.imshow(aspect='auto')
return
else:
return
# ----escala de colores que te guste (http://matplotlib.org/examples/color/colormaps_reference.html)---
cmap='jet'
<<<<<<< HEAD
nb1 = 10
#nb1 = 100
=======
#nb1 = 5
nb1 = 100
>>>>>>> b29321f0c229ffcfec5b2b43354097e24d056487
particles=sph.Particles(pos[:3,corte],mstr[corte]*1e10,nb=nb1)
escena=sph.Scene(particles)
escena.update_camera(r='infinity',x=0,y=0,z=0,extent=[-rl,rl,-rl,rl])
rend=sph.Render(escena)
extent=escena.get_extent()
rend.set_logscale()
ax[0,0].imshow(rend.get_image(),extent=extent,origin='lower',cmap=cmap, vmin=vmin, vmax= vmax)
ax[0,0].set_xlim(-5,5)
ax[0,0].set_ylim(-5,5)
ax[0,0].set_xticks([])
ax[0,0].set_yticks([])
ax[0,0].set_yticklabels([])
ax[0,0].set_xticklabels([])
# ax[0,0].set_ylabel('$y\:[kpc]$', fontsize=40)
# ax[0,0].minorticks_on()
# ax[0,0].tick_params( labelsize=40)
# ax[0,0].tick_params('both', length=5, width=1.8,which='minor', direction='in', right='on',top='on')
# ax[0,0].tick_params('both', length=8, width=1.8,which='major', direction='in', right='on',top='on')
def plot_parent(i, P, n, res, centre, z_centre):
print("i:", i)
sys.stdout.flush()
cmap = cmaps.twilight()
f = modified_sigmoid(i / n, 3)
L, l = 3300 / 2, 50
dl = L * (1 - f) + l * f
R = 16. / 9
offset = 100
dx = dl * R
dy = dl
ext_x = 3200 / 2
ext_y = 3200 / 2
if ext_x > dx: ext_x = dx
if ext_y > dy: ext_y = dy
C = sph.Camera(r='infinity',
t=0,
p=0,
roll=0,
xsize=res,
ysize=res,
x=centre,
y=centre,
z=z_centre,
extent=[-ext_x, ext_x, -ext_y, ext_y])
S = sph.Scene(P, C)
R = sph.Render(S)
extent = R.get_extent()
img = np.log10(R.get_image())
print(img.max(), img.min())
fig = plt.figure(figsize=(16, 9))
ax = fig.add_axes([0, 0, 1, 1])
# ax.imshow(img, cmap=cmap, vmin=-0.05, vmax=1.2, extent=extent,aspect='equal')
ax.imshow(img,
cmap=cmap,
vmin=--1,
vmax=2.4,
extent=extent,
aspect='equal')
del (img)
del (C)
ax.set_facecolor(cmap(0.0))
ax.set_xlim(-dx, dx)
ax.set_ylim(-dy, dy)
ax.hlines(0.9, 0.092, 0.192, transform=ax.transAxes, color='red', lw=2)
ax.text(0.1,
0.94,
'$%i \; \mathrm{cMpc}$' % (dx * 0.2),
transform=ax.transAxes,
size=12,
color='black')
rect = patches.Rectangle((0.09, 0.92),
0.105,
0.065,
linewidth=1,
edgecolor='none',
facecolor='white',
alpha=0.5,
transform=ax.transAxes)
ax.add_patch(rect)
ax.get_xaxis().set_visible(False)
ax.get_yaxis().set_visible(False)
# plt.show()
fname = 'plots/parent_zoom/parent_zoom_%03d.png' % i
# plt.gca().set_axis_off()
# plt.subplots_adjust(top = 1, bottom = 0, right = 1, left = 0,
# hspace = 0, wspace = 0)
# plt.margins(0,0)
print(fname)
fig.savefig(fname, dpi=150) #, bbox_inches='tight', pad_inches = 0)
plt.close(fig)
anchors['extent'] = [10, 'pass', 'pass', 'pass', 'pass', 'pass', 30]
data = get_camera_trajectory(targets, anchors)
n1 = 10000
cube1 = np.random.rand(3, n1)
cube1[1, :] -= 6
cube2 = np.random.rand(3, n1)
cube2[1, :] += 1
cubes = np.concatenate((cube1, cube2), axis=1)
mass = np.ones(n1+n1)
P = sph.Particles(cubes, mass)
S = sph.Scene(P)
h = 0
for i in data:
i['xsize'] = 200
i['ysize'] = 200
i['roll'] = 0
S = sph.Scene(P)
S.update_camera(**i)
print(S.Camera.get_params())
R = sph.Render(S)
img = R.get_image()
R.set_logscale()
plt.imsave('test/image_'+str('%d.png' % h), img,
vmin=0, vmax=6, cmap='cubehelix')
h += 1
def getimage(path, snap, soft, num, centre, data, part_type):
# Get plot data
if part_type == 0:
poss_gas, masses_gas, smls_gas = get_sphere_data(path,
snap,
part_type=0,
soft=None)
elif part_type == 1:
poss_gas, masses_gas, smls_gas = get_sphere_data(path,
snap,
part_type=1,
soft=soft)
else:
return -1
# Centre particles
poss_gas -= centre
# Remove boundary particles
rgas = np.linalg.norm(poss_gas, axis=1)
okinds_gas = rgas < 14 / 0.677
poss_gas = poss_gas[okinds_gas, :]
masses_gas = masses_gas[okinds_gas]
smls_gas = smls_gas[okinds_gas]
if part_type == 0:
print('There are', len(masses_gas), 'gas particles in the region')
elif part_type == 1:
print('There are', len(masses_gas),
'dark matter particles in the region')
# Set up particle objects
P_gas = sph.Particles(poss_gas, mass=masses_gas, hsml=smls_gas)
# Initialise the scene
S_gas = sph.Scene(P_gas)
i = data[num]
i['xsize'] = 5000
i['ysize'] = 5000
i['roll'] = 0
S_gas.update_camera(**i)
R_gas = sph.Render(S_gas)
R_gas.set_logscale()
img_gas = R_gas.get_image()
if part_type == 0:
np.save(
'animationdata/gas_animationdata_reg' + reg + '_snap' + snap +
'_angle%05d.npy' % num, img_gas)
if part_type == 1:
np.save(
'animationdata/dm_animationdata_reg' + reg + '_snap' + snap +
'_angle%05d.npy' % num, img_gas)
# fig = plt.figure()
# ax = fig.add_subplot(111)
#
# ax.hist(get_normalised_image(img_gas).ravel(), bins=256, range=(0.0, 1.0), fc='k', ec='k')
#
# if part_type == 0:
# fig.savefig('plots/spheres/All/histDM_animation_reg' + reg + '_snap' + snap + '_angle%05d.png'%num,
# bbox_inches='tight')
# if part_type == 1:
# fig.savefig('plots/spheres/All/histgas_animation_reg' + reg + '_snap' + snap + '_angle%05d.png'%num,
# bbox_inches='tight')
# plt.close(fig)
vmax_gas = img_gas.max()
vmin_gas = vmax_gas * 0.5
# Get colormaps
if part_type == 0:
cmap_gas = cmaps.twilight()
elif part_type == 1:
cmap_gas = ml.cm.Greys_r
# Convert images to rgb arrays
rgb_gas = cmap_gas(get_normalised_image(img_gas, vmin=vmin_gas))
return rgb_gas, R_gas.get_extent()
