python - Matplotlib imshow with circular units

Question

I have a smallish matrix and I want to do imshow with it with interpolation='nearest'. But this makes discrete square blocks. Is it possible to make the blocks circular and also control the size of the block?

Answer 1

所有imshow的情节都是为了填充情节的空间而设计的（“im”是image的缩写，images填充情节空间），这与你想要绘制圆圈的愿望不一致。

网格中的散点图将是通往圆形网格的简单路线。这是一个例子：

from pylab import *

N = 10
r0 = 0.6
x = linspace(0, 1, 10)
y = linspace(0, 1, 10)
X, Y = meshgrid(x, y)
size = rand(N,N)
c = size
scatter(X,Y,s=700*size, marker='o', c=c)

show()

如果您使用绘图原语，您可以获得更多控制。来自 matplolib 库的两个这样的示例在此处和此处。