From 71e23b85c71a51fda88cf896abc5c8df1a70f83a Mon Sep 17 00:00:00 2001
From: Tim Hoffmann <2836374+timhoffm@users.noreply.github.com>
Date: Sun, 19 Sep 2021 23:46:42 +0200
Subject: [PATCH] Backport PR #21124: Tweak streamplot plot_types example.
---
plot_types/arrays/streamplot.py | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/plot_types/arrays/streamplot.py b/plot_types/arrays/streamplot.py
index 2cad7d7603e0..d50d9cea6580 100644
--- a/plot_types/arrays/streamplot.py
+++ b/plot_types/arrays/streamplot.py
@@ -13,16 +13,15 @@
# make a stream function:
X, Y = np.meshgrid(np.linspace(-3, 3, 256), np.linspace(-3, 3, 256))
Z = (1 - X/2. + X**5 + Y**3) * np.exp(-X**2 - Y**2)
-Z = Z - Z.min()
# make U and V out of the streamfunction:
V = np.diff(Z[1:, :], axis=1)
U = -np.diff(Z[:, 1:], axis=0)
# plot:
fig, ax = plt.subplots()
-# contour stream function
-ax.contour(X, Y, Z, colors='C1', alpha=0.5, zorder=1, linewidths=3)
+ax.grid(False)
+
# plot stream plot
-ax.streamplot(X[1:, 1:], Y[1:, 1:], U, V, zorder=2)
+ax.streamplot(X[1:, 1:], Y[1:, 1:], U, V)
plt.show()
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