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如下所示:
matplotlib.pyplot.hist( x, bins=10, range=None, normed=False, weights=None, cumulative=False, bottom=None, histtype=u'bar', align=u'mid', orientation=u'vertical', rwidth=None, log=False, color=None, label=None, stacked=False, hold=None, **kwargs)
x : (n,) array or sequence of (n,) arrays
這個參數是指定每個bin(箱子)分布的數據,對應x軸
bins : integer or array_like, optional
這個參數指定bin(箱子)的個數,也就是總共有幾條條狀圖
normed : boolean, optional
If True, the first element of the return tuple will be the counts normalized to form a probability density, i.e.,n/(len(x)`dbin)
這個參數指定密度,也就是每個條狀圖的占比例比,默認為1
color : color or array_like of colors or None, optional
這個指定條狀圖的顏色
我們繪制一個10000個數據的分布條狀圖,共50份,以統計10000分的分布情況
""" Demo of the histogram (hist) function with a few features. In addition to the basic histogram, this demo shows a few optional features: * Setting the number of data bins * The ``normed`` flag, which normalizes bin heights so that the integral of the histogram is 1. The resulting histogram is a probability density. * Setting the face color of the bars * Setting the opacity (alpha value). """ import numpy as np import matplotlib.mlab as mlab import matplotlib.pyplot as plt # example data mu = 100 # mean of distribution sigma = 15 # standard deviation of distribution x = mu + sigma * np.random.randn(10000) num_bins = 50 # the histogram of the data n, bins, patches = plt.hist(x, num_bins, normed=1, facecolor='blue', alpha=0.5) # add a 'best fit' line y = mlab.normpdf(bins, mu, sigma) plt.plot(bins, y, 'r--') plt.xlabel('Smarts') plt.ylabel('Probability') plt.title(r'Histogram of IQ: $\mu=100$, $\sigma=15$') # Tweak spacing to prevent clipping of ylabel plt.subplots_adjust(left=0.15) plt.show()
以上這篇關于python中plt.hist參數的使用詳解就是小編分享給大家的全部內容了,希望能給大家一個參考,也希望大家多多支持億速云。
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