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 mpl

from matplotlib import pyplot

import numpy as np

grid = [[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 colors

cmap = 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 used

img = pyplot.imshow(zvals,interpolation='nearest',

                    cmap = cmap,norm=norm)

# make a color bar

pyplot.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