将matplotlib文件保存到目录 [英] Save matplotlib file to a directory

问题描述

这是简单的代码，可在该代码的同一目录中生成并保存绘图图像.现在，有没有一种方法可以将其保存在所选目录中?

Here is the simple code which generates and saves a plot image in the same directory as of the code. Now, is there a way through which I can save it in directory of choice?

import matplotlib
import matplotlib.pyplot as plt

fig = plt.figure()
ax = fig.add_subplot(111)
ax.plot(range(100))

fig.savefig('graph.png')

推荐答案

如果要保存到的目录是工作目录的子目录，只需在文件名之前指定相对路径即可:

If the directory you wish to save to is a sub-directory of your working directory, simply specify the relative path before your file name:

    fig.savefig('Sub Directory/graph.png')

如果您希望使用绝对路径，请导入 os 模块:

If you wish to use an absolute path, import the os module:

    import os
    my_path = os.path.abspath(__file__) # Figures out the absolute path for you in case your working directory moves around.
    ...
    fig.savefig(my_path + '/Sub Directory/graph.png')

如果您不想担心子目录名称前的斜杠，可以按以下方式智能地连接路径:

If you don't want to worry about the leading slash in front of the sub-directory name, you can join paths intelligently as follows:

    import os
    my_path = os.path.abspath(__file__) # Figures out the absolute path for you in case your working directory moves around.
    my_file = 'graph.png'
    ...
    fig.savefig(os.path.join(my_path, my_file))        

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