更改网格大小以匹配网格中框的大小

Question

我正在尝试使用 matplotlib 制作 20x20 的可视网格。但是我无法调整网格的大小以适应每个框的大小。这是我的代码：import matplotlib as mplfrom matplotlib import pyplotimport numpy as npgrid = [[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],        [0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1],        [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],        [1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0],        [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],        [0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1],        [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],        [1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0],        [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],        [0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1],        [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],        [1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0],        [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],        [0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1],        [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],        [1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0],        [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],        [0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1],        [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],        [1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0],    ]print (grid)zvals = grid# make a color map of fixed colorscmap = mpl.colors.ListedColormap(['white','black'])bounds=[-2,-1,1,2]norm = mpl.colors.BoundaryNorm(bounds, cmap.N)# tell imshow about color map so that only set colors are usedimg = pyplot.imshow(zvals,interpolation='nearest',                    cmap = cmap,norm=norm)# make a color barpyplot.colorbar(img,cmap=cmap,                norm=norm,boundaries=bounds,ticks=[0,1])pyplot.grid(which= 'both')pyplot.show()我希望网格是黑盒子的大小。

Answer 1

您可以将此部分添加到您的代码中：

ax = pyplot.gca()

major_ticks = np.arange(0.5, 20, 1)

pyplolt.xticks(rotation=90)

ax.set_xticks(major_ticks)

ax.set_yticks(major_ticks)

ax.grid(which='both')

pyplot.grid(True)

输出：

附言。通常pyplot以这种方式导入：import matplotlib.pyplot as plt