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Changed fill.py example to be less misleading #11009

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Merged
merged 3 commits into from
Apr 12, 2018
Merged

Changed fill.py example to be less misleading #11009

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258f2fb
Changed fill.py example to be less misleading, after issue #5827
Apr 9, 2018
8ed5e63
Changed polygon, removed grid and added outline
Apr 10, 2018
bd86363
removed linesin example 1 and added plt.show
Apr 10, 2018
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32 changes: 20 additions & 12 deletions examples/lines_bars_and_markers/fill.py
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Original file line number Diff line number Diff line change
Expand Up @@ -5,23 +5,18 @@

Demo fill plot.
"""
import numpy as np
import matplotlib.pyplot as plt

x = np.linspace(0, 1, 500)
y = np.sin(4 * np.pi * x) * np.exp(-5 * x)

###############################################################################
# First, the most basic fill plot a user can make with matplotlib:
import numpy as np
import matplotlib.pyplot as plt

fig, ax = plt.subplots()

ax.fill(x, y, zorder=10)
ax.grid(True, zorder=5)
x = [0, 1, 2, 1]
y = [1, 2, 1, 0]

x = np.linspace(0, 2 * np.pi, 500)
y1 = np.sin(x)
y2 = np.sin(3 * x)
fig, ax = plt.subplots()
ax.fill(x, y)
plt.show()

###############################################################################
# Next, a few more optional features:
Expand All @@ -30,6 +25,19 @@
# * Setting the fill color.
# * Setting the opacity (alpha value).


x = np.linspace(0, 1.5 * np.pi, 500)
y1 = np.sin(x)
y2 = np.sin(3 * x)

fig, ax = plt.subplots()

ax.fill(x, y1, 'b', x, y2, 'r', alpha=0.3)

# Outline of the region we've filled in
ax.plot(x, y1, c='b', alpha=0.8)
ax.plot(x, y2, c='r', alpha=0.8)
ax.plot([x[0], x[-1]], [y1[0], y1[-1]], c='b', alpha=0.8)
ax.plot([x[0], x[-1]], [y2[0], y2[-1]], c='r', alpha=0.8)

plt.show()