在matplotlib子图中绘制几个图像文件 [英] plot several image files in matplotlib subplots

问题描述

我想创建一个矩阵子图并在另一个子图中从目录显示每个BMP文件，但是我找不到适合我问题的合适解决方案，有人可以帮我吗?

I would like to create a matrix subplot and display each BMP files, from a directory, in a different subplot, but I cannot find the appropriate solution for my problem, could somebody helping me?.

这是我拥有的代码:

import os, sys
from PIL import Image
import matplotlib.pyplot as plt
from glob import glob

bmps = glob('*trace*.bmp')

fig, axes = plt.subplots(3, 3)

for arch in bmps:
    i = Image.open(arch)
    iar = np.array(i)
    for i in range(3):
        for j in range(3):
            axes[i, j].plot(iar)
            plt.subplots_adjust(wspace=0, hspace=0)
plt.show()

执行后出现以下错误:

推荐答案

native matplotlib仅支持PNG图像，请参见 http://matplotlib.org/users/image_tutorial.html

natively matplotlib only supports PNG images, see http://matplotlib.org/users/image_tutorial.html

然后总是读取图像-绘制图像

读取图像

 img1 = mpimg.imread('stinkbug1.png')
 img2 = mpimg.imread('stinkbug2.png')

绘图图像(2个子图)

 plt.figure(1)
 plt.subplot(211)
 plt.imshow(img1)

 plt.subplot(212)
 plt.imshow(img2)
 plt.show()

按照 http://matplotlib.org/users/image_tutorial.html (因为有导入库)

以下是使用matplotlib绘制bmp的一个线程:

here is a thread on plotting bmps with matplotlib: Why bmp image displayed as wrong color with plt.imshow of matplotlib on IPython-notebook?

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