[英]how can I plot 4 histograms on the same graph
I have the following problem:我有以下问题:
I am using hist() in matplotlib.pyplot我在 matplotlib.pyplot 中使用 hist()
I am trying to create 4 histograms on the same graph.我正在尝试在同一张图上创建 4 个直方图。 and an approximation gaussian for each one of them.以及它们中的每一个的近似高斯。
how can I plot the 4 histograms on the same graph, without them blocking each other (side by side)?我怎样才能 plot 在同一张图上的 4 个直方图,而不会相互阻挡(并排)? any ideas?有任何想法吗?
There are several examples in the matplotlib documentation . matplotlib 文档中有几个示例。 This one looks like it answers your question:这个看起来像是回答了你的问题:
import numpy as np
import pylab as P
#
# first create a single histogram
#
mu, sigma = 200, 25
x = mu + sigma*P.randn(10000)
#
# finally: make a multiple-histogram of data-sets with different length
#
x0 = mu + sigma*P.randn(10000)
x1 = mu + sigma*P.randn(7000)
x2 = mu + sigma*P.randn(3000)
# and exercise the weights option by arbitrarily giving the first half
# of each series only half the weight of the others:
w0 = np.ones_like(x0)
w0[:len(x0)/2] = 0.5
w1 = np.ones_like(x1)
w1[:len(x1)/2] = 0.5
w2 = np.ones_like(x2)
w0[:len(x2)/2] = 0.5
P.figure()
n, bins, patches = P.hist( [x0,x1,x2], 10, weights=[w0, w1, w2], histtype='bar')
P.show()
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