如何在一个窗口中显示 matplotlib 图 [英] How to show matplotlib plot in one window

问题描述

我想在一个窗口中显示一个绘图，而不是每次运行 PyQT 脚本时都打开另一个窗口.

I want to show a plot in one window instead of opening another window every time I run my PyQT Script.

这是我的代码:

        fig2 = plt.figure()
        ax2 = fig2.add_subplot(111, aspect='equal')
        ax2.add_patch(
            patches.Circle(
                (x1, y1),
                r1,
                fill=False
            )
        )

        ax2.add_patch(
            patches.Circle(
                (x2, y2),
                r2,
                fill=False
            )
        )

        ax2.add_patch(
            patches.Circle(
                (x3, y3),
                r3,
                fill=False
            )
        )
        plt.plot([x_centroid], [y_centroid], 'ro')
        plt.show()

每当我更改变量时，都会弹出新窗口.我希望它在 1 个窗口中.

Whenever I change my variables,new window pops up.I want it in 1 window.

推荐答案

据我所知，一旦它开始在该进程中运行另一个脚本，就没有简单的方法来连接到现有的python进程.

As far as I know there is no easy way to connect to an existing python process once it is started to run another script within this process.

您可以选择在交互式会话中工作，例如在IPython中.在那里你可以创建你的情节并在你前进时对其进行操纵.

The option you have is to work in an interactive session, e.g. within IPython. There you may create your plot and manipulate it as you advance.

例如

   1: import matplotlib.pyplot as plt
   2: import numpy as np
   3: fig, ax = plt.subplots()
   4: line, = ax.plot([1,3,2])
   5: plt.ion()
   6: plt.show()                   # shows the figure
   7: line2, = plt.plot([2,2,1])   # inside the figure shows another line
   8: line.remove()                # removes the first line from the figure

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