From 1c39a105e9daaa748264004451b392f058e19620 Mon Sep 17 00:00:00 2001
From: Tim Hoffmann <2836374+timhoffm@users.noreply.github.com>
Date: Mon, 24 Mar 2025 23:31:19 +0100
Subject: [PATCH] DOC: Slightly further improve arrowstyle demo
- use straight lines
- use monospace font for the style names
- adjust positions and colors so that the arrows stand out more
---
.../fancyarrow_demo.py | 38 ++++++++++---------
1 file changed, 21 insertions(+), 17 deletions(-)
diff --git a/galleries/examples/text_labels_and_annotations/fancyarrow_demo.py b/galleries/examples/text_labels_and_annotations/fancyarrow_demo.py
index 4f45a9a72a47..6a2700d20515 100644
--- a/galleries/examples/text_labels_and_annotations/fancyarrow_demo.py
+++ b/galleries/examples/text_labels_and_annotations/fancyarrow_demo.py
@@ -3,7 +3,11 @@
Annotation arrow style reference
================================
-Overview of the arrow styles available in `~.Axes.annotate`.
+Overview of the available `.ArrowStyle` settings. These are used for the *arrowstyle*
+parameter of `~.Axes.annotate` and `.FancyArrowPatch`.
+
+Each style can be configured with a set of parameters, which are stated along with
+their default values.
"""
import inspect
@@ -12,38 +16,38 @@
import matplotlib.pyplot as plt
-import matplotlib.patches as mpatches
+from matplotlib.patches import ArrowStyle
-styles = mpatches.ArrowStyle.get_styles()
+styles = ArrowStyle.get_styles()
ncol = 2
nrow = (len(styles) + 1) // ncol
-axs = (plt.figure(figsize=(4 * ncol, 1 + nrow))
- .add_gridspec(1 + nrow, ncol,
- wspace=0, hspace=0, left=0, right=1, bottom=0, top=1).subplots())
+gridspec_kw = dict(wspace=0, hspace=0.05, left=0, right=1, bottom=0, top=1)
+fig, axs = plt.subplots(1 + nrow, ncol,
+ figsize=(4 * ncol, 1 + nrow), gridspec_kw=gridspec_kw)
for ax in axs.flat:
- ax.set_xlim(-0.5, 4)
+ ax.set_xlim(-0.1, 4)
ax.set_axis_off()
for ax in axs[0, :]:
- ax.text(-0.25, 0.5, "arrowstyle", size="large", color="tab:blue")
- ax.text(1.25, .5, "default parameters", size="large")
+ ax.text(0, 0.5, "arrowstyle", size="large", color="tab:blue")
+ ax.text(1.4, .5, "default parameters", size="large")
for ax, (stylename, stylecls) in zip(axs[1:, :].T.flat, styles.items()):
# draw dot and annotation with arrowstyle
- l, = ax.plot(1, 0, "o", color="grey")
- ax.annotate(stylename, (1, 0), (0, 0),
- size="large", color="tab:blue", ha="center", va="center",
+ l, = ax.plot(1.25, 0, "o", color="darkgrey")
+ ax.annotate(stylename, (1.25, 0), (0, 0),
+ size="large", color="tab:blue", va="center", family="monospace",
arrowprops=dict(
- arrowstyle=stylename, connectionstyle="arc3,rad=-0.05",
- color="k", shrinkA=5, shrinkB=5, patchB=l,
+ arrowstyle=stylename, connectionstyle="arc3,rad=0",
+ color="black", shrinkA=5, shrinkB=5, patchB=l,
),
- bbox=dict(boxstyle="square", fc="w", ec="grey"))
+ bbox=dict(boxstyle="square", fc="w", ec="darkgrey"))
# draw default parameters
# wrap at every nth comma (n = 1 or 2, depending on text length)
s = str(inspect.signature(stylecls))[1:-1]
n = 2 if s.count(',') > 3 else 1
- ax.text(1.25, 0,
+ ax.text(1.4, 0,
re.sub(', ', lambda m, c=itertools.count(1): m.group()
if next(c) % n else '\n', s),
- verticalalignment="center")
+ verticalalignment="center", color="0.3")
plt.show()
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