import numpy
import matplotlib.pyplot as plt
mat = numpy.array([[-1,1,1,-1],
[1,-1,1,-1],
[2,1,1,1],
[-1,-1,-1,2]])
plt.matshow(mat)
matshow()绘制矩阵
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转载自blog.csdn.net/weixin_43486780/article/details/105029509
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