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Lucups

matplotlib: 如何设置生成的图片比例?

  •  
  •   Lucups Apr 9, 2014 13606 views
    This topic created in 4401 days ago, the information mentioned may be changed or developed.
    为了去除图片的边缘空白部分,我使用了

    fig = plt.figure()
    ax = fig.add_subplot(111)
    extent = ax.get_window_extent().transformed(fig.dpi_scale_trans.inverted())
    plt.savefig('test.png', dpi = 200, bbox_inches = extent)

    然后默认生成的图片宽高比例都是 31:24 的。

    测试了一下直接 show

    plt.show()

    show出来的图片宽高比例是1:1的。

    该如何设置图片的比例?
    4 replies    1970-01-01 08:00:00 +08:00
    autozimu
        1
    autozimu  
       Apr 9, 2014   1
    figure(figsize=None, ...)

    figsize : tuple of integers, optional, default : None
    width, height in inches. If not provided, defaults to rc
    figure.figsize.

    为什么要去除空白部分? 使用 savefig 的 transparent=True 参数不是很好吗?
    Lucups
        2
    Lucups  
    OP
       Apr 10, 2014
    @autozimu
    非常感谢!
    因为有坐标轴的原因,transparent=True 会把坐标轴包含在内。
    我试了一下 figure(figsize=[n,n]) (n=16, dpi=100) 可以实现等比,本身没有问题,但在我的那个代码里,生成的图片还是有一点点小小的差距(1240*1280)。
    能否不显示坐标轴?
    Hualin
        3
    Hualin  
       Apr 10, 2014   1
    @Lucups plt.axis('off')
    Lucups
        4
    Lucups  
    OP
       Apr 12, 2014
    @Hualin 我已经找到最优方案, 感谢回答~!
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