如何更改 matplotlib 极坐标图的“r"轴位置? [英] How to change the location the 'r' axis for matplotlib polar plot?

问题描述

如何更改 matplotlib 极坐标图的 'r' 轴的位置?

How to change the location the 'r' axis for matplotlib polar plot?

我正在尝试更改极坐标图中r轴的位置.目前它被数据掩盖了，但是数据在theta = 340-360度时有一个间隙(在我的实际数据示例中，实际上是大约45度)，所以如果我能放轴标签在数据间隙中.

I am trying to change the location of the r axis in a polar plot. At the moment it is being covered up by the data, but there is a gap in the data at theta = 340-360 degrees (in my real data example this is actually approx. 45 degrees) so it would be good if i could put axis labels there, in the data gap.

import random
import numpy as np
import matplotlib.pyplot as plt
sampleSize=1000
az=[]
inc=[]
for i in range(sampleSize):
    az.append(random.randint(0,340)) #not to the full 360 to represent my natural gap in the data
    inc.append(random.randint(0,90))

plt.figure()
plt.polar(np.radians(az),inc,'o')
plt.show()

推荐答案

我能想到的一种方法是使用 .set_rgrids 方法:

One way that I can think of is to use .set_rgrids method:

f=plt.figure()
ax = f.add_axes([0.1, 0.1, 0.8, 0.8], projection='polar')
ax.plot(np.radians(az), inc, 'o')
ax.set_rgrids([10,20,30,40,50,60,70,80,90], angle=345.)

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