Matplotlib 不同大小的子图

问题描述

我需要在图形中添加两个子图.一个子图的宽度大约是第二个(相同高度)的三倍.我使用 GridSpec 和 colspan 参数完成了此操作，但我想使用 figure 完成此操作，以便我可以保存为 PDF.我可以使用构造函数中的 figsize 参数调整第一个图形，但是如何更改第二个图形的大小?

解决方案

• 另一种方法是使用 subplots 函数并通过 gridspec_kw 传递宽度比

  • • 因为问题是规范的，所以这里有一个带有垂直子图的示例.

    # 绘制它f, (a0, a1, a2) = plt.subplots(3, 1, gridspec_kw={'height_ratios': [1, 1, 3]})a0.plot(x, y)a1.plot(x, y)a2.plot(x, y)f.tight_layout()

    I need to add two subplots to a figure. One subplot needs to be about three times as wide as the second (same height). I accomplished this using GridSpec and the colspan argument but I would like to do this using figure so I can save to PDF. I can adjust the first figure using the figsize argument in the constructor, but how do I change the size of the second plot?

    解决方案
    • Another way is to use the subplots function and pass the width ratio with gridspec_kw
      • matplotlib Tutorial: Customizing Figure Layouts Using GridSpec and Other Functions
      • matplotlib.gridspec.GridSpec has available gridspect_kw options

    import numpy as np
    import matplotlib.pyplot as plt
    
    # generate some data
    x = np.arange(0, 10, 0.2)
    y = np.sin(x)
    
    # plot it
    f, (a0, a1) = plt.subplots(1, 2, gridspec_kw={'width_ratios': [3, 1]})
    a0.plot(x, y)
    a1.plot(y, x)
    
    f.tight_layout()
    f.savefig('grid_figure.pdf')
    

    • Because the question is canonical, here is an example with vertical subplots.

    # plot it
    f, (a0, a1, a2) = plt.subplots(3, 1, gridspec_kw={'height_ratios': [1, 1, 3]})
    
    a0.plot(x, y)
    a1.plot(x, y)
    a2.plot(x, y)
    
    f.tight_layout()
    

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