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Merge pull request #10850 from matplotlib/auto-backport-of-pr-10849
Backport PR #10849 on branch v2.2.2-doc
2 parents 6dc0c02 + 1d79e30 commit 222e478

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‎tutorials/intermediate/constrainedlayout_guide.py

Lines changed: 33 additions & 22 deletions
Original file line numberDiff line numberDiff line change
@@ -40,6 +40,7 @@
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import matplotlib.pyplot as plt
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import numpy as np
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import matplotlib.colors as mcolors
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import matplotlib.gridspec as gridspec
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import matplotlib._layoutbox as layoutbox
@@ -98,10 +99,20 @@ def example_plot(ax, fontsize=12, nodec=False):
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# automatically. Note that if you specify ``use_gridspec=True`` it will be
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# ignored because this option is made for improving the layout via
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# ``tight_layout``.
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#
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# .. note::
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#
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# For the `pcolormesh` kwargs (``pc_kwargs``) we use a dictionary.
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# Below we will assign one colorbar to a number of axes each containing
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# a `ScalarMappable`; specifying the norm and colormap ensures
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# the colorbar is accurate for all the axes.
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arr = np.arange(100).reshape((10, 10))
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norm = mcolors.Normalize(vmin=0., vmax=100.)
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# see note above: this makes all pcolormesh calls consistent:
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pc_kwargs = {'rasterized':True, 'cmap':'viridis', 'norm':norm}
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fig, ax = plt.subplots(figsize=(4, 4), constrained_layout=True)
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im = ax.pcolormesh(arr, rasterized=True)
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im = ax.pcolormesh(arr, **pc_kwargs)
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fig.colorbar(im, ax=ax, shrink=0.6)
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############################################################################
@@ -110,7 +121,7 @@ def example_plot(ax, fontsize=12, nodec=False):
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fig, axs = plt.subplots(2, 2, figsize=(4, 4), constrained_layout=True)
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for ax in axs.flatten():
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im = ax.pcolormesh(arr, rasterized=True)
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im = ax.pcolormesh(arr, **pc_kwargs)
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fig.colorbar(im, ax=axs, shrink=0.6)
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############################################################################
@@ -122,9 +133,9 @@ def example_plot(ax, fontsize=12, nodec=False):
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fig, axs = plt.subplots(3, 1, figsize=(4, 4), constrained_layout=True)
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for ax in axs[:2]:
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im = ax.pcolormesh(arr, rasterized=True)
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im = ax.pcolormesh(arr, **pc_kwargs)
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fig.colorbar(im, ax=axs[:2], shrink=0.6)
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im = axs[2].pcolormesh(arr, rasterized=True)
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im = axs[2].pcolormesh(arr, **pc_kwargs)
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fig.colorbar(im, ax=axs[2], shrink=0.6)
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############################################################################
@@ -133,9 +144,9 @@ def example_plot(ax, fontsize=12, nodec=False):
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fig, axs = plt.subplots(3, 1, figsize=(4, 4), constrained_layout=True)
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for ax in axs[:2]:
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im = ax.pcolormesh(arr, rasterized=True)
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im = ax.pcolormesh(arr, **pc_kwargs)
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fig.colorbar(im, ax=axs[:2], shrink=0.6)
138-
im = axs[2].pcolormesh(arr, rasterized=True)
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im = axs[2].pcolormesh(arr, **pc_kwargs)
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fig.colorbar(im, ax=[axs[2]], shrink=0.6)
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####################################################
@@ -146,7 +157,7 @@ def example_plot(ax, fontsize=12, nodec=False):
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fig, axs = plt.subplots(2, 2, figsize=(4, 4), constrained_layout=True)
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for ax in axs.flatten():
149-
im = ax.pcolormesh(arr, rasterized=True)
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im = ax.pcolormesh(arr, **pc_kwargs)
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fig.colorbar(im, ax=axs, shrink=0.6)
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fig.suptitle('Big Suptitle')
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@@ -225,7 +236,7 @@ def example_plot(ax, fontsize=12, nodec=False):
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fig, axs = plt.subplots(2, 2, constrained_layout=True)
227238
for ax in axs.flatten():
228-
pc = ax.pcolormesh(arr, rasterized=True)
239+
pc = ax.pcolormesh(arr, **pc_kwargs)
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fig.colorbar(im, ax=ax, shrink=0.6, pad=0)
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ax.set_xticklabels('')
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ax.set_yticklabels('')
@@ -239,7 +250,7 @@ def example_plot(ax, fontsize=12, nodec=False):
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fig, axs = plt.subplots(2, 2, constrained_layout=True)
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for ax in axs.flatten():
242-
pc = ax.pcolormesh(arr, rasterized=True)
253+
pc = ax.pcolormesh(arr, **pc_kwargs)
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fig.colorbar(im, ax=ax, shrink=0.6, pad=0.05)
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ax.set_xticklabels('')
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ax.set_yticklabels('')
@@ -349,7 +360,7 @@ def docomplicated(suptitle=None):
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axs = []
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for gs in gsr:
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ax = fig.add_subplot(gs)
352-
pcm = ax.pcolormesh(arr, rasterized=True)
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pcm = ax.pcolormesh(arr, **pc_kwargs)
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ax.set_xlabel('x-label')
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ax.set_ylabel('y-label')
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ax.set_title('title')
@@ -620,9 +631,9 @@ def docomplicated(suptitle=None):
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# colorbar is associated wiht a gridspec.
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fig, ax = plt.subplots(1, 2, constrained_layout=True)
623-
im = ax[0].pcolormesh(arr, rasterized=True)
634+
im = ax[0].pcolormesh(arr, **pc_kwargs)
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fig.colorbar(im, ax=ax[0], shrink=0.6)
625-
im = ax[1].pcolormesh(arr, rasterized=True)
636+
im = ax[1].pcolormesh(arr, **pc_kwargs)
626637
plot_children(fig, fig._layoutbox, printit=False)
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#######################################################################
@@ -637,7 +648,7 @@ def docomplicated(suptitle=None):
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fig, ax = plt.subplots(2, 2, constrained_layout=True)
639650
for a in ax.flatten():
640-
im = a.pcolormesh(arr, rasterized=True)
651+
im = a.pcolormesh(arr, **pc_kwargs)
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fig.colorbar(im, ax=ax, shrink=0.6)
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plot_children(fig, fig._layoutbox, printit=False)
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@@ -664,11 +675,11 @@ def docomplicated(suptitle=None):
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fig = plt.figure(constrained_layout=True)
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gs = gridspec.GridSpec(2, 2, figure=fig)
666677
ax = fig.add_subplot(gs[:, 0])
667-
im = ax.pcolormesh(arr, rasterized=True)
678+
im = ax.pcolormesh(arr, **pc_kwargs)
668679
ax = fig.add_subplot(gs[0, 1])
669-
im = ax.pcolormesh(arr, rasterized=True)
680+
im = ax.pcolormesh(arr, **pc_kwargs)
670681
ax = fig.add_subplot(gs[1, 1])
671-
im = ax.pcolormesh(arr, rasterized=True)
682+
im = ax.pcolormesh(arr, **pc_kwargs)
672683
plot_children(fig, fig._layoutbox, printit=False)
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#######################################################################
@@ -681,13 +692,13 @@ def docomplicated(suptitle=None):
681692
height_ratios=[1., 0.5, 1.5],
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width_ratios=[1.2, 0.8])
683694
ax = fig.add_subplot(gs[:2, 0])
684-
im = ax.pcolormesh(arr, rasterized=True)
695+
im = ax.pcolormesh(arr, **pc_kwargs)
685696
ax = fig.add_subplot(gs[2, 0])
686-
im = ax.pcolormesh(arr, rasterized=True)
697+
im = ax.pcolormesh(arr, **pc_kwargs)
687698
ax = fig.add_subplot(gs[0, 1])
688-
im = ax.pcolormesh(arr, rasterized=True)
699+
im = ax.pcolormesh(arr, **pc_kwargs)
689700
ax = fig.add_subplot(gs[1:, 1])
690-
im = ax.pcolormesh(arr, rasterized=True)
701+
im = ax.pcolormesh(arr, **pc_kwargs)
691702
plot_children(fig, fig._layoutbox, printit=False)
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########################################################################
@@ -705,9 +716,9 @@ def docomplicated(suptitle=None):
705716
fig = plt.figure(constrained_layout=True)
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gs = gridspec.GridSpec(1, 3, figure=fig)
707718
ax = fig.add_subplot(gs[0])
708-
im = ax.pcolormesh(arr, rasterized=True)
719+
im = ax.pcolormesh(arr, **pc_kwargs)
709720
ax = fig.add_subplot(gs[-1])
710-
im = ax.pcolormesh(arr, rasterized=True)
721+
im = ax.pcolormesh(arr, **pc_kwargs)
711722
plot_children(fig, fig._layoutbox, printit=False)
712723
plt.show()
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