每日一程-21.用 numpy 和 pylab 画正弦余弦
Author: Notus(hehe_xiao@qq.com)
Create: 2019-03-01
Update: 2019-03-01
用 numpy 和 pylab 画正弦余弦
环境
Python version: 3.7.1
代码如下(a.py)
'''
用 numpy 和 pylab 画正弦余弦
@Author: Notus(hehe_xiao@qq.com)
@Create: 2019-03-01
@Update: 2019-03-01
@Version: 0.1
'''
import numpy
import pylab
# 得到序列xVals对应的sin和cos
xVals = numpy.arange(0, 4*numpy.pi, 0.1)
y1Vals = numpy.sin(xVals)
y2Vals = numpy.cos(xVals)
# 画图
pylab.plot(xVals, y1Vals, 'bo')
pylab.plot(xVals, y2Vals, 'rx')
pylab.show()