Python使用pylab绘制直方图

Python直方图

#!/usr/bin/python
# -*- coding: utf-8 -*-

import pylab as pl

dataFile = "dataList.txt"
tempList = []
with open(dataFile,"r") as data:
    for everLine in data:
        arrEverLine = [float(index) for index in everLine.split()]
        tempList.append(arrEverLine[0])

pl.hist(tempList,100)
pl.xlabel("直方图标题")
pl.show()

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dataList.txt内容
14 2 1 0.5 0.5 0 1 0.5 1.5 18.5
19 2 2 0.5 1 0 1 0.5 0 21
19.5 2 1.5 2 0 0.5 2 0 1 20
17.5 1.5 1 1.5 2 0 1.5 0 0 18.5
19.5 2 2 2 0.5 0 1 0 0.5 19.5
16.5 2 0.5 1 0 0.5 0.5 0 0.5 19.5
15.5 2 1 1.5 0 0 1 0.5 1 17.5
13.5 1.5 1 1 2 0 2 0.5 2 20
14.5 2 1.5 2 0 0 1 0 2 18.5
16 2 2 1.5 1 0.5 1 0 2 19.5
。。。

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输出结果