Matplotlib直方图带有误差条 [英] Matplotlib histogram with errorbars

问题描述

我已经使用pyplot.hist()函数使用matplotlib创建了直方图.我想将垃圾箱高度(sqrt(binheight))的毒害误差平方根添加到条形图.我该怎么办?

I have created a histogram with matplotlib using the pyplot.hist() function. I would like to add a Poison error square root of bin height (sqrt(binheight)) to the bars. How can I do this?

.hist()的返回元组包括return[2]-> 1个Patch对象的列表.我只能发现有可能向通过pyplot.bar()创建的条形添加错误.

The return tuple of .hist() includes return[2] -> a list of 1 Patch objects. I could only find out that it is possible to add errors to bars created via pyplot.bar().

推荐答案

实际上，您需要使用bar.您可以用来输出hist并将其绘制为条形图:

Indeed you need to use bar. You can use to output of hist and plot it as a bar:

import numpy as np
import pylab as plt

data       = np.array(np.random.rand(1000))
y,binEdges = np.histogram(data,bins=10)
bincenters = 0.5*(binEdges[1:]+binEdges[:-1])
menStd     = np.sqrt(y)
width      = 0.05
plt.bar(bincenters, y, width=width, color='r', yerr=menStd)
plt.show()

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