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Show box/arrowstyle parameters in reference examples. #20538

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Jul 4, 2021
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Show box/arrowstyle parameters in reference examples. #20538

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33 changes: 22 additions & 11 deletions examples/shapes_and_collections/fancybox_demo.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,8 @@
The following examples show how to plot boxes with different visual properties.
"""

import inspect

import matplotlib.pyplot as plt
import matplotlib.transforms as mtransforms
import matplotlib.patches as mpatch
Expand All @@ -15,17 +17,26 @@
# First we'll show some sample boxes with fancybox.

styles = mpatch.BoxStyle.get_styles()
spacing = 1.2

figheight = (spacing * len(styles) + .5)
fig = plt.figure(figsize=(4 / 1.5, figheight / 1.5))
fontsize = 0.3 * 72

for i, stylename in enumerate(styles):
fig.text(0.5, (spacing * (len(styles) - i) - 0.5) / figheight, stylename,
ha="center",
size=fontsize,
bbox=dict(boxstyle=stylename, fc="w", ec="k"))
ncol = 2
nrow = (len(styles) + 1) // ncol
axs = (plt.figure(figsize=(3 * ncol, 1 + nrow))
.add_gridspec(1 + nrow, ncol, wspace=.5).subplots())
for ax in axs.flat:
ax.set_axis_off()
for ax in axs[0, :]:
ax.text(.2, .5, "boxstyle",
transform=ax.transAxes, size="large", color="tab:blue",
horizontalalignment="right", verticalalignment="center")
ax.text(.4, .5, "default parameters",
transform=ax.transAxes,
horizontalalignment="left", verticalalignment="center")
for ax, (stylename, stylecls) in zip(axs[1:, :].T.flat, styles.items()):
ax.text(.2, .5, stylename, bbox=dict(boxstyle=stylename, fc="w", ec="k"),
transform=ax.transAxes, size="large", color="tab:blue",
horizontalalignment="right", verticalalignment="center")
ax.text(.4, .5, str(inspect.signature(stylecls))[1:-1].replace(", ", "\n"),
transform=ax.transAxes,
horizontalalignment="left", verticalalignment="center")


###############################################################################
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53 changes: 28 additions & 25 deletions examples/text_labels_and_annotations/fancyarrow_demo.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,38 +6,41 @@
Overview of the arrow styles available in `~.Axes.annotate`.
"""

import inspect

import matplotlib.patches as mpatches
import matplotlib.pyplot as plt

styles = mpatches.ArrowStyle.get_styles()

ncol = 2
nrow = (len(styles) + 1) // ncol
figheight = (nrow + 0.5)
fig = plt.figure(figsize=(4 * ncol / 1.5, figheight / 1.5))
fontsize = 0.2 * 70

ax = fig.add_axes([0, 0, 1, 1], frameon=False)
ax.set(xlim=(0, 4 * ncol), ylim=(0, figheight))

for i, (stylename, styleclass) in enumerate(styles.items()):
x = 3.2 + (i // nrow) * 4
y = (figheight - 0.7 - i % nrow) # /figheight
p = mpatches.Circle((x, y), 0.2)
ax.add_patch(p)

ax.annotate(stylename, (x, y),
(x - 1.2, y),
ha="right", va="center",
size=fontsize,
arrowprops=dict(arrowstyle=stylename,
patchB=p,
shrinkA=5,
shrinkB=5,
fc="k", ec="k",
connectionstyle="arc3,rad=-0.05",
),
axs = (plt.figure(figsize=(4 * ncol, 1 + nrow))
.add_gridspec(1 + nrow, ncol,
wspace=.5, left=.1, right=.9, bottom=0, top=1).subplots())
for ax in axs.flat:
ax.set_axis_off()
for ax in axs[0, :]:
ax.text(0, .5, "arrowstyle",
transform=ax.transAxes, size="large", color="tab:blue",
horizontalalignment="center", verticalalignment="center")
ax.text(.5, .5, "default parameters",
transform=ax.transAxes,
horizontalalignment="left", verticalalignment="center")
for ax, (stylename, stylecls) in zip(axs[1:, :].T.flat, styles.items()):
l, = ax.plot(.35, .5, "ok", transform=ax.transAxes)
ax.annotate(stylename, (.35, .5), (0, .5),
xycoords="axes fraction", textcoords="axes fraction",
size="large", color="tab:blue",
horizontalalignment="center", verticalalignment="center",
arrowprops=dict(
arrowstyle=stylename, connectionstyle="arc3,rad=-0.05",
color="k", shrinkA=5, shrinkB=5, patchB=l,
),
bbox=dict(boxstyle="square", fc="w"))
ax.text(.5, .5,
str(inspect.signature(stylecls))[1:-1].replace(", ", "\n"),
transform=ax.transAxes,
horizontalalignment="left", verticalalignment="center")

plt.show()

Expand Down