Python imshow() 函数不起作用
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imshow() function not working
提问by user2129468
I'm working on a program in python with packages numpy,scipy and matplotlib.pyplot. This is my code:
我正在用 python 编写一个程序，其中包含 numpy、scipy 和 matplotlib.pyplot 包。这是我的代码：
import matplotlib.pyplot as plt
from scipy import misc
im=misc.imread("photosAfterAverage/exampleAfterAverage1.jpg")
plt.imshow(im, cmap=plt.cm.gray)
for some reason the image isn't showing up (checked if I got the image, in that part it's all fine- I can print the array.).
出于某种原因，图像没有显示出来（检查我是否得到了图像，在那部分一切正常——我可以打印数组。）。
回答by tiago
You need to call plt.show()to display the image. Or use ipython --pylabfor an interactive shell that is matplotlibaware.
您需要调用plt.show()以显示图像。或ipython --pylab用于可matplotlib感知的交互式 shell 。
回答by Remi Cuingnet
"Interactive mode may also be turned on via matplotlib.pyplot.ion(), and turned off via matplotlib.pyplot.ioff()" cf. matplotlib user guide.
“交互模式也可以通过打开matplotlib.pyplot.ion()和关闭matplotlib.pyplot.ioff()”参见。matplotlib 用户指南。
