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Sep 14, 2018
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Cleanup some axes_grid1 examples #11997

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46 changes: 19 additions & 27 deletions examples/axes_grid1/demo_axes_grid.py
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Original file line number Diff line number Diff line change
Expand Up @@ -30,8 +30,8 @@ def demo_simple_grid(fig):
)

Z, extent = get_demo_image()
for i in range(4):
im = grid[i].imshow(Z, extent=extent, interpolation="nearest")
for ax in grid:
im = ax.imshow(Z, extent=extent, interpolation="nearest")

# This only affects axes in first column and second row as share_all =
# False.
Expand All @@ -53,8 +53,8 @@ def demo_grid_with_single_cbar(fig):
)

Z, extent = get_demo_image()
for i in range(4):
im = grid[i].imshow(Z, extent=extent, interpolation="nearest")
for ax in grid:
im = ax.imshow(Z, extent=extent, interpolation="nearest")
grid.cbar_axes[0].colorbar(im)

for cax in grid.cbar_axes:
Expand All @@ -69,7 +69,6 @@ def demo_grid_with_each_cbar(fig):
"""
A grid of 2x2 images. Each image has its own colorbar.
"""

grid = ImageGrid(fig, 143, # similar to subplot(143)
nrows_ncols=(2, 2),
axes_pad=0.1,
Expand All @@ -81,11 +80,9 @@ def demo_grid_with_each_cbar(fig):
cbar_pad="2%",
)
Z, extent = get_demo_image()
for i in range(4):
im = grid[i].imshow(Z, extent=extent, interpolation="nearest")
grid.cbar_axes[i].colorbar(im)

for cax in grid.cbar_axes:
for ax, cax in zip(grid, grid.cbar_axes):
im = ax.imshow(Z, extent=extent, interpolation="nearest")
cax.colorbar(im)
cax.toggle_label(False)

# This affects all axes because we set share_all = True.
Expand All @@ -97,7 +94,6 @@ def demo_grid_with_each_cbar_labelled(fig):
"""
A grid of 2x2 images. Each image has its own colorbar.
"""

grid = ImageGrid(fig, 144, # similar to subplot(144)
nrows_ncols=(2, 2),
axes_pad=(0.45, 0.15),
Expand All @@ -112,27 +108,23 @@ def demo_grid_with_each_cbar_labelled(fig):

# Use a different colorbar range every time
limits = ((0, 1), (-2, 2), (-1.7, 1.4), (-1.5, 1))
for i in range(4):
im = grid[i].imshow(Z, extent=extent, interpolation="nearest",
vmin=limits[i][0], vmax=limits[i][1])
grid.cbar_axes[i].colorbar(im)

for i, cax in enumerate(grid.cbar_axes):
cax.set_yticks((limits[i][0], limits[i][1]))
for ax, cax, vlim in zip(grid, grid.cbar_axes, limits):
im = ax.imshow(Z, extent=extent, interpolation="nearest",
vmin=vlim[0], vmax=vlim[1])
cax.colorbar(im)
cax.set_yticks((vlim[0], vlim[1]))

# This affects all axes because we set share_all = True.
grid.axes_llc.set_xticks([-2, 0, 2])
grid.axes_llc.set_yticks([-2, 0, 2])


if 1:
F = plt.figure(1, (10.5, 2.5))

F.subplots_adjust(left=0.05, right=0.95)
fig = plt.figure(figsize=(10.5, 2.5))
fig.subplots_adjust(left=0.05, right=0.95)

demo_simple_grid(F)
demo_grid_with_single_cbar(F)
demo_grid_with_each_cbar(F)
demo_grid_with_each_cbar_labelled(F)
demo_simple_grid(fig)
demo_grid_with_single_cbar(fig)
demo_grid_with_each_cbar(fig)
demo_grid_with_each_cbar_labelled(fig)

plt.show()
plt.show()
168 changes: 83 additions & 85 deletions examples/axes_grid1/demo_axes_grid2.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5,9 +5,11 @@

Grid of images with shared xaxis and yaxis.
"""
import numpy as np

import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid1 import ImageGrid
import numpy as np
import matplotlib.colors


def get_demo_image():
Expand All @@ -30,90 +32,86 @@ def add_inner_title(ax, title, loc, size=None, **kwargs):
at.txt._text.set_path_effects([withStroke(foreground="w", linewidth=3)])
return at

if 1:
F = plt.figure(1, (6, 6))
F.clf()

# prepare images
Z, extent = get_demo_image()
ZS = [Z[i::3, :] for i in range(3)]
extent = extent[0], extent[1]/3., extent[2], extent[3]

# demo 1 : colorbar at each axes

grid = ImageGrid(F, 211, # similar to subplot(111)
nrows_ncols=(1, 3),
direction="row",
axes_pad=0.05,
add_all=True,
label_mode="1",
share_all=True,
cbar_location="top",
cbar_mode="each",
cbar_size="7%",
cbar_pad="1%",
)

for ax, z in zip(grid, ZS):
im = ax.imshow(
z, origin="lower", extent=extent, interpolation="nearest")
ax.cax.colorbar(im)

for ax, im_title in zip(grid, ["Image 1", "Image 2", "Image 3"]):
t = add_inner_title(ax, im_title, loc='lower left')
t.patch.set_alpha(0.5)

for ax, z in zip(grid, ZS):
ax.cax.toggle_label(True)
#axis = ax.cax.axis[ax.cax.orientation]
#axis.label.set_text("counts s$^{-1}$")
#axis.label.set_size(10)
#axis.major_ticklabels.set_size(6)

# changing the colorbar ticks
grid[1].cax.set_xticks([-1, 0, 1])
grid[2].cax.set_xticks([-1, 0, 1])

grid[0].set_xticks([-2, 0])
grid[0].set_yticks([-2, 0, 2])

# demo 2 : shared colorbar

grid2 = ImageGrid(F, 212,
nrows_ncols=(1, 3),
direction="row",
axes_pad=0.05,
add_all=True,
label_mode="1",
share_all=True,
cbar_location="right",
cbar_mode="single",
cbar_size="10%",
cbar_pad=0.05,
)

grid2[0].set_xlabel("X")
grid2[0].set_ylabel("Y")

vmax, vmin = np.max(ZS), np.min(ZS)
import matplotlib.colors
norm = matplotlib.colors.Normalize(vmax=vmax, vmin=vmin)

for ax, z in zip(grid2, ZS):
im = ax.imshow(z, norm=norm,
origin="lower", extent=extent,
interpolation="nearest")

# With cbar_mode="single", cax attribute of all axes are identical.
ax.cax.colorbar(im)
ax.cax.toggle_label(True)

for ax, im_title in zip(grid2, ["(a)", "(b)", "(c)"]):
t = add_inner_title(ax, im_title, loc='upper left')
t.patch.set_ec("none")
t.patch.set_alpha(0.5)
fig = plt.figure(figsize=(6, 6))

# Prepare images
Z, extent = get_demo_image()
ZS = [Z[i::3, :] for i in range(3)]
extent = extent[0], extent[1]/3., extent[2], extent[3]

# *** Demo 1: colorbar at each axes ***
grid = ImageGrid(fig, 211, # similar to subplot(211)
nrows_ncols=(1, 3),
direction="row",
axes_pad=0.05,
add_all=True,
label_mode="1",
share_all=True,
cbar_location="top",
cbar_mode="each",
cbar_size="7%",
cbar_pad="1%",
)

for ax, z in zip(grid, ZS):
im = ax.imshow(
z, origin="lower", extent=extent, interpolation="nearest")
ax.cax.colorbar(im)

grid2[0].set_xticks([-2, 0])
grid2[0].set_yticks([-2, 0, 2])
for ax, im_title in zip(grid, ["Image 1", "Image 2", "Image 3"]):
t = add_inner_title(ax, im_title, loc='lower left')
t.patch.set_alpha(0.5)

plt.show()
for ax, z in zip(grid, ZS):
ax.cax.toggle_label(True)
#axis = ax.cax.axis[ax.cax.orientation]
#axis.label.set_text("counts s$^{-1}$")
#axis.label.set_size(10)
#axis.major_ticklabels.set_size(6)

# Changing the colorbar ticks
grid[1].cax.set_xticks([-1, 0, 1])
grid[2].cax.set_xticks([-1, 0, 1])

grid[0].set_xticks([-2, 0])
grid[0].set_yticks([-2, 0, 2])

# *** Demo 2: shared colorbar ***
grid2 = ImageGrid(fig, 212,
nrows_ncols=(1, 3),
direction="row",
axes_pad=0.05,
add_all=True,
label_mode="1",
share_all=True,
cbar_location="right",
cbar_mode="single",
cbar_size="10%",
cbar_pad=0.05,
)

grid2[0].set_xlabel("X")
grid2[0].set_ylabel("Y")

vmax, vmin = np.max(ZS), np.min(ZS)
norm = matplotlib.colors.Normalize(vmax=vmax, vmin=vmin)

for ax, z in zip(grid2, ZS):
im = ax.imshow(z, norm=norm,
origin="lower", extent=extent,
interpolation="nearest")

# With cbar_mode="single", cax attribute of all axes are identical.
ax.cax.colorbar(im)
ax.cax.toggle_label(True)

for ax, im_title in zip(grid2, ["(a)", "(b)", "(c)"]):
t = add_inner_title(ax, im_title, loc='upper left')
t.patch.set_ec("none")
t.patch.set_alpha(0.5)

grid2[0].set_xticks([-2, 0])
grid2[0].set_yticks([-2, 0, 2])

plt.show()
19 changes: 9 additions & 10 deletions examples/axes_grid1/demo_edge_colorbar.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,8 @@
Demo Edge Colorbar
==================

This example shows how to use one common colorbar for each row or column
of an image grid.
"""
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid1 import AxesGrid
Expand All @@ -21,7 +23,7 @@ def demo_bottom_cbar(fig):
"""
A grid of 2x2 images with a colorbar for each column.
"""
grid = AxesGrid(fig, 121, # similar to subplot(132)
grid = AxesGrid(fig, 121, # similar to subplot(121)
nrows_ncols=(2, 2),
axes_pad=0.10,
share_all=True,
Expand Down Expand Up @@ -54,8 +56,7 @@ def demo_right_cbar(fig):
"""
A grid of 2x2 images. Each row has its own colorbar.
"""

grid = AxesGrid(F, 122, # similar to subplot(122)
grid = AxesGrid(fig, 122, # similar to subplot(122)
nrows_ncols=(2, 2),
axes_pad=0.10,
label_mode="1",
Expand All @@ -82,12 +83,10 @@ def demo_right_cbar(fig):
grid.axes_llc.set_yticks([-2, 0, 2])


if 1:
F = plt.figure(1, (5.5, 2.5))

F.subplots_adjust(left=0.05, right=0.93)
fig = plt.figure(figsize=(5.5, 2.5))
fig.subplots_adjust(left=0.05, right=0.93)

demo_bottom_cbar(F)
demo_right_cbar(F)
demo_bottom_cbar(fig)
demo_right_cbar(fig)

plt.show()
plt.show()
20 changes: 13 additions & 7 deletions examples/axes_grid1/simple_axesgrid.py
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Original file line number Diff line number Diff line change
@@ -1,22 +1,28 @@
"""
===============
Simple Axesgrid
===============
================
Simple ImageGrid
================

Align multiple images using `~mpl_toolkits.axes_grid1.axes_grid.ImageGrid`.
"""

import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid1 import ImageGrid
import numpy as np

im = np.arange(100).reshape((10, 10))
im1 = np.arange(100).reshape((10, 10))
im2 = im1.T
im3 = np.flipud(im1)
im4 = np.fliplr(im2)

fig = plt.figure(1, (4., 4.))
fig = plt.figure(figsize=(4., 4.))
grid = ImageGrid(fig, 111, # similar to subplot(111)
nrows_ncols=(2, 2), # creates 2x2 grid of axes
axes_pad=0.1, # pad between axes in inch.
)

for i in range(4):
grid[i].imshow(im) # The AxesGrid object work as a list of axes.
for ax, im in zip(grid, [im1, im2, im3, im4]):
# Iterating over the grid returns the Axes.
ax.imshow(im)

plt.show()
20 changes: 11 additions & 9 deletions examples/axes_grid1/simple_axesgrid2.py
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Original file line number Diff line number Diff line change
@@ -1,8 +1,10 @@
"""
================
Simple Axesgrid2
================
==================
Simple ImageGrid 2
==================

Align multiple images of different sizes using
`~mpl_toolkits.axes_grid1.axes_grid.ImageGrid`.
"""
import matplotlib.pyplot as plt
from mpl_toolkits.axes_grid1 import ImageGrid
Expand All @@ -16,8 +18,9 @@ def get_demo_image():
# z is a numpy array of 15x15
return z, (-3, 4, -4, 3)

F = plt.figure(1, (5.5, 3.5))
grid = ImageGrid(F, 111, # similar to subplot(111)

fig = plt.figure(figsize=(5.5, 3.5))
grid = ImageGrid(fig, 111, # similar to subplot(111)
nrows_ncols=(1, 3),
axes_pad=0.1,
add_all=True,
Expand All @@ -30,9 +33,8 @@ def get_demo_image():
im2 = Z[:, :10]
im3 = Z[:, 10:]
vmin, vmax = Z.min(), Z.max()
for i, im in enumerate([im1, im2, im3]):
ax = grid[i]
ax.imshow(im, origin="lower", vmin=vmin,
vmax=vmax, interpolation="nearest")
for ax, im in zip(grid, [im1, im2, im3]):
ax.imshow(im, origin="lower", vmin=vmin, vmax=vmax,
interpolation="nearest")

plt.show()