Matplotlib：阴影区域

日期2007-12-06（最后修改），2007-12-06（创建）

使用 fill 函数创建任何颜色色调的阴影区域。以下是一个示例。

In [1]
from pylab import *

x = arange(10)
y = x

# Plot junk and then a filled region
plot(x, y)

# Make a blue box that is somewhat see-through
# and has a red border. 
# WARNING: alpha doesn't work in postscript output.... 
fill([3,4,4,3], [2,2,4,4], 'b', alpha=0.2, edgecolor='r')
Out[1]
[<matplotlib.patches.Polygon at 0x7f7a19aac890>]

章节作者：jesrl

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