Cleanup the GridSpec demos.

anntzer · anntzer · commit 5e8e95f0941a · 2018-09-18T22:40:39.000+02:00
Merged demo_gridspec03 and demo_gridspec05.  Gave them slightly more
meaningful titles.
diff --git a/doc/users/prev_whats_new/whats_new_1.0.rst b/doc/users/prev_whats_new/whats_new_1.0.rst
@@ -25,7 +25,7 @@ Jae-Joon Lee has written :mod:`~matplotlib.gridspec`, a new module for
 doing complex subplot layouts, featuring row and column spans and
 more.  See :doc:`/tutorials/intermediate/gridspec` for a tutorial overview.
 
-.. figure:: ../../gallery/userdemo/images/sphx_glr_demo_gridspec01_000.png
+.. figure:: ../../gallery/userdemo/images/sphx_glr_demo_gridspec01_001.png
    :target: ../../gallery/userdemo/demo_gridspec01.html
    :align: center
    :scale: 50
diff --git a/examples/userdemo/demo_gridspec01.py b/examples/userdemo/demo_gridspec01.py
@@ -1,26 +1,29 @@
 """
-===============
-Demo Gridspec01
-===============
+=================
+subplot2grid demo
+=================
 
+This example demonstrates the use of `plt.subplot2grid` to generate subplots.
+Using `GridSpec`, as demonstrated in :doc:`/gallery/userdemo/demo_gridspec03`
+is generally preferred.
 """
+
 import matplotlib.pyplot as plt
 
 
-def make_ticklabels_invisible(fig):
+def annotate_axes(fig):
     for i, ax in enumerate(fig.axes):
         ax.text(0.5, 0.5, "ax%d" % (i+1), va="center", ha="center")
         ax.tick_params(labelbottom=False, labelleft=False)
 
 
-fig = plt.figure(0)
+fig = plt.figure()
 ax1 = plt.subplot2grid((3, 3), (0, 0), colspan=3)
 ax2 = plt.subplot2grid((3, 3), (1, 0), colspan=2)
 ax3 = plt.subplot2grid((3, 3), (1, 2), rowspan=2)
 ax4 = plt.subplot2grid((3, 3), (2, 0))
 ax5 = plt.subplot2grid((3, 3), (2, 1))
 
-fig.suptitle("subplot2grid")
-make_ticklabels_invisible(fig)
+annotate_axes(fig)
 
 plt.show()
diff --git a/examples/userdemo/demo_gridspec03.py b/examples/userdemo/demo_gridspec03.py
@@ -1,37 +1,50 @@
 """
-===============
-Demo Gridspec03
-===============
-
+=============
+GridSpec demo
+=============
+
+This example demonstrates the use of `GridSpec` to generate subplots,
+the control of the relative sizes of subplots with *width_ratios* and
+*height_ratios*, and the control of the spacing around and between subplots
+using subplot params (*left*, *right*, *bottom*, *top*, *wspace*, and
+*hspace*).
 """
+
 import matplotlib.pyplot as plt
 from matplotlib.gridspec import GridSpec
 
 
-def make_ticklabels_invisible(fig):
+def annotate_axes(fig):
     for i, ax in enumerate(fig.axes):
         ax.text(0.5, 0.5, "ax%d" % (i+1), va="center", ha="center")
         ax.tick_params(labelbottom=False, labelleft=False)
 
 
-# demo 3 : gridspec with subplotpars set.
-
 fig = plt.figure()
+fig.suptitle("Controlling subplot sizes with width_ratios and height_ratios")
+
+gs = GridSpec(2, 2, width_ratios=[1, 2], height_ratios=[4, 1])
+ax1 = fig.add_subplot(gs[0])
+ax2 = fig.add_subplot(gs[1])
+ax3 = fig.add_subplot(gs[2])
+ax4 = fig.add_subplot(gs[3])
 
-fig.suptitle("GridSpec w/ different subplotpars")
+annotate_axes(fig)
+
+
+fig = plt.figure()
+fig.suptitle("Controlling spacing around and between subplots")
 
-gs1 = GridSpec(3, 3)
-gs1.update(left=0.05, right=0.48, wspace=0.05)
-ax1 = plt.subplot(gs1[:-1, :])
-ax2 = plt.subplot(gs1[-1, :-1])
-ax3 = plt.subplot(gs1[-1, -1])
+gs1 = GridSpec(3, 3, left=0.05, right=0.48, wspace=0.05)
+ax1 = fig.add_subplot(gs1[:-1, :])
+ax2 = fig.add_subplot(gs1[-1, :-1])
+ax3 = fig.add_subplot(gs1[-1, -1])
 
-gs2 = GridSpec(3, 3)
-gs2.update(left=0.55, right=0.98, hspace=0.05)
-ax4 = plt.subplot(gs2[:, :-1])
-ax5 = plt.subplot(gs2[:-1, -1])
-ax6 = plt.subplot(gs2[-1, -1])
+gs2 = GridSpec(3, 3, left=0.55, right=0.98, hspace=0.05)
+ax4 = fig.add_subplot(gs2[:, :-1])
+ax5 = fig.add_subplot(gs2[:-1, -1])
+ax6 = fig.add_subplot(gs2[-1, -1])
 
-make_ticklabels_invisible(fig)
+annotate_axes(fig)
 
 plt.show()
diff --git a/examples/userdemo/demo_gridspec05.py b/examples/userdemo/demo_gridspec05.py
diff --git a/examples/userdemo/demo_gridspec06.py b/examples/userdemo/demo_gridspec06.py
@@ -1,9 +1,11 @@
-"""
-===============
-Demo Gridspec06
-===============
+r"""
+================
+Nested GridSpecs
+================
 
+This example demonstrates the use of nested `GridSpec`\s.
 """
+
 import matplotlib.pyplot as plt
 import matplotlib.gridspec as gridspec
 import numpy as np
@@ -26,15 +28,15 @@ def squiggle_xy(a, b, c, d):
     a = i // 4 + 1
     b = i % 4 + 1
     for j, (c, d) in enumerate(product(range(1, 4), repeat=2)):
-        ax = plt.Subplot(fig, inner_grid[j])
+        ax = fig.add_subplot(inner_grid[j])
         ax.plot(*squiggle_xy(a, b, c, d))
         ax.set_xticks([])
         ax.set_yticks([])
         fig.add_subplot(ax)
 
 all_axes = fig.get_axes()
 
-#show only the outside spines
+# show only the outside spines
 for ax in all_axes:
     for sp in ax.spines.values():
         sp.set_visible(False)
