Python matplotlib draw three function images

Installed is anaconda, which contains NumPy, scipy, matplotlib and other scientific computing packages

Https://www.continuum.io/downloads

Open python in Anaconda in terminal

/home/qi/anaconda/bin/python

>>> from matplotlib import pyplot as pl>>> import numpy as np>>> from scipy import interpolate&     gt;>> x = Np.linspace ( -10, 5, +) >>> y = -2*x**3 + 5*x**2 + 9>>> pl.figure (figsize = (8, 4)) <matplotlib.figure.figure object at 0xb14f10ac>>>> pl.plot (x, y, color= "blue", LineWidth = 1.5) [< Matplotlib.lines.Line2D object at 0xb0c6348c>]>>> pl.show ()

Pl.figure Setting the plot area size

Pl.plot start drawing, and set line color, and line width

Pl.show Display Image

Display image

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Reference:

http://zhan.renren.com/pythonlover?gid=3602888498028996903

This article is from the "R and Python apps" blog, so be sure to keep this source http://matrix6ro.blog.51cto.com/1746429/1836377

Python matplotlib draw three function images