如何使用matplotlib绘制collections.Counter直方图? [英] How to plot collections.Counter histogram using matplotlib?

问题描述

如何绘制以下Counter对象的直方图?

How to plot histogram of following Counter object?:

w = collections.Counter()
l = ['a', 'b', 'b', 'b', 'c']
for o in l:
    w[o]+=1

推荐答案

查看您的数据并进行尝试，我想您想要的是条形图而不是直方图.直方图用于绘制分布，但这不是您所拥有的.您可以简单地使用 keys 和 values 作为 plt.bar 的参数.这样，键将被自动用作x轴刻度标签.

Looking at your data and attempt, I guess you want a bar plot instead of a histogram. Histogram is used to plot a distribution but that is not what you have. You can simply use the keys and values as the arguments of plt.bar. This way, the keys will be automatically taken as the x-axis tick-labels.

import collections
import matplotlib.pyplot as plt
l = ['a', 'b', 'b', 'b', 'c']
w = collections.Counter(l)
plt.bar(w.keys(), w.values())

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