用matplotlib映射加号 [英] Mapping a plus symbol with matplotlib

问题描述

我想用 mapplotlib 绘制一个加号，看起来像这样:

I want to use mapplotlib to graph a plus symbol that looks like this:

   _
 _| |_
|_   _|
  |_|

我一直在阅读matplotlib文档，但是坦率地说，我什至不知道要搜索什么来解决我的问题.实际上，我想在同一个 X 轴(即一条垂直线)上有两个点，但我似乎无法弄清楚如何做到这一点.理想情况下，我希望使用一组绘图点进行此操作，尽管我知道这是不可能的.

I've been reading through the matplotlib docs but, frankly, I'm not even sure what to search to fix my problem. Effectively I want to have two points on the same X axis (I.E. a vertical line) but I can't seem to figure out how to do this. Ideally I'd like to do this with one set of plot points, though I understand if this isn't possible.

如果我能以任何方式澄清我的问题，请告诉我.

Please let me know if I can clarify my problem in any way.

推荐答案

1. 在方格纸上画出你想要的图形，
2. 写下角的x，y值，
3. 以相同的顺序将这些值放入一对列表(一个用于x，一个用于y)
4. 绘制它.

例如:

>>> import matplotlib.pyplot as plt
>>> fig, ax = plt.subplots()
>>> y =[10, 20, 20, 30, 30, 40, 40, 30, 30, 20, 20, 10, 10]
>>> x =[10, 10, 0, 0, 10, 10, 20, 20, 30, 30, 20, 20, 10]
>>> line, = ax.plot(x, y, 'go-')
>>> ax.grid()
>>> ax.axis('equal')
(0.0, 30.0, 10.0, 40.0)
>>> plt.show()

产生:

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