Python中的圆形/极坐标直方图 [英] Circular / polar histogram in python
问题描述
我有周期数据,围绕它的分布最好以圆形显示.现在的问题是,如何使用matplotlib
进行可视化?如果没有,可以在Python中轻松完成吗?
在这里,我生成了一些样本数据,希望通过圆形直方图进行可视化:
import matplotlib.pyplot as plt
import numpy as np
# Generating random data
a = np.random.uniform(low=0, high=2*np.pi, size=50)
在SX上的一个问题中,有几个例子是 Mathematica .
我想生成一个类似于以下内容之一的图:
基于此
a>画廊中的示例,您可以
import numpy as np
import matplotlib.pyplot as plt
N = 80
bottom = 8
max_height = 4
theta = np.linspace(0.0, 2 * np.pi, N, endpoint=False)
radii = max_height*np.random.rand(N)
width = (2*np.pi) / N
ax = plt.subplot(111, polar=True)
bars = ax.bar(theta, radii, width=width, bottom=bottom)
# Use custom colors and opacity
for r, bar in zip(radii, bars):
bar.set_facecolor(plt.cm.jet(r / 10.))
bar.set_alpha(0.8)
plt.show()
当然,有很多变化和tweek,但这应该可以帮助您入门.
通常,浏览 matplotlib图库通常是一个不错的起点.
>在这里,我使用bottom
关键字将中心保留为空,因为我认为您看到的是一个较早的问题,您使用的图形更像是我所拥有的图形,因此我认为这就是您想要的.要获得上面显示的完整楔形,只需使用bottom=0
(或将其省略,因为0
是默认值).
I have periodic data and the distribution for it is best visualised around a circle. Now the question is how can I do this visualisation using matplotlib
? If not, can it be done easily in Python?
Here I generate some sample data which I would like to visualise with a circular histogram:
import matplotlib.pyplot as plt
import numpy as np
# Generating random data
a = np.random.uniform(low=0, high=2*np.pi, size=50)
There are a few examples in a question on SX for Mathematica.
I would like to generate a plot which looks something like one of the following:
Building off of this example from the gallery, you can do
import numpy as np
import matplotlib.pyplot as plt
N = 80
bottom = 8
max_height = 4
theta = np.linspace(0.0, 2 * np.pi, N, endpoint=False)
radii = max_height*np.random.rand(N)
width = (2*np.pi) / N
ax = plt.subplot(111, polar=True)
bars = ax.bar(theta, radii, width=width, bottom=bottom)
# Use custom colors and opacity
for r, bar in zip(radii, bars):
bar.set_facecolor(plt.cm.jet(r / 10.))
bar.set_alpha(0.8)
plt.show()
Of course, there are many variations and tweeks, but this should get you started.
In general, a browse through the matplotlib gallery is usually a good place to start.
Here, I used the bottom
keyword to leave the center empty, because I think I saw an earlier question by you with a graph more like what I have, so I assume that's what you want. To get the full wedges that you show above, just use bottom=0
(or leave it out since 0
is the default).
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