# Author: Ika, 2013-07-24from pylab import *import pylab as plimport numpy as np# Create a figure of size 8x6 points, 80 dots per inchpl.figure(figsize=(8,8), dpi=80)# Create a plot of the cubic function y=(x+4)(x+1)(x-2)/4x = np.linspace(-5.0,4.0,256, endpoint=True)y = (x+4)*(x+1)*(x-2)/4pl.plot(x,y,color="magenta", linewidth=3.0, linestyle="-")# Set labelspl.xlim(-5,4)pl.ylim(-4,7)# Move the spinesax = pl.gca()ax.set_xlabel('x')ax.set_ylabel('y')ax.text(-5, 3, r'$y=\frac{1}{4}(x+4)(x+1)(x-2)$', fontsize=20)# Set up the gridax.spines['right'].set_color('none')ax.spines['top'].set_color('none')ax.xaxis.set_ticks_position('bottom')ax.spines['bottom'].set_position(('data',0))ax.yaxis.set_ticks_position('left')ax.spines['left'].set_position(('data',0))ax.grid(color="grey",linestyle='--',linewidth=1)# Save the figure to the output SVG fileplt.savefig("Cubic_Function_SVG.svg");