如何将笛卡尔坐标轴添加到 matplotlib 中的极坐标图？

Question

我有一个极坐标图，我想给它添加笛卡尔轴。我怎样才能做到这一点？似乎没有这方面的文档。

import numpy as np
import matplotlib.pyplot as plt

def f(x, y):
    return np.sin(x) ** 10 + np.cos(10 + y * x) * np.cos(x)

x = np.linspace(0, 8, 50)
y = np.linspace(0, 8, 40)

X, Y = np.meshgrid(x, y)
Z = f(X, Y)

fig, ax = plt.subplots(subplot_kw = dict(projection = 'polar'))
plt.axis('off')
ax.contourf(X, Y, Z)

Answer 1

要将笛卡尔坐标轴添加到极坐标图中，您所要做的就是在相同位置添加第二对坐标轴，如下所示：

import numpy as np
import matplotlib.pyplot as plt

def f(x, y):
    return np.sin(x) ** 10 + np.cos(10 + y * x) * np.cos(x)

x = np.linspace(0, 8, 50)
y = np.linspace(0, 8, 40)

X, Y = np.meshgrid(x, y)
Z = f(X, Y)

fig, ax = plt.subplots(subplot_kw = dict(projection = 'polar'))
plt.axis('off')
ax.contourf(X, Y, Z)

new_axis = fig.add_axes(ax.get_position(), frameon = False)
new_axis.plot()
plt.show()

如何将笛卡尔坐标轴添加到 matplotlib 中的极坐标图？

How do I add cartesian axes to a polar plot in matplotlib?

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polar-coordinates