../../../_images/plot_contour_1.png

Python source code: plot_contour.py

import numpy as np
def f(x,y):
return (1 - x / 2 + x ** 5 + y ** 3) * np.exp(-x ** 2 - y ** 2)
n = 256
x = np.linspace(-3, 3, n)
y = np.linspace(-3, 3, n)
X, Y = np.meshgrid(x, y)
pl.contourf(X, Y, f(X, Y), 8, alpha=.75, cmap=pl.cm.hot)
C = pl.contour(X, Y, f(X,Y), 8, colors='black', linewidth=.5)
pl.clabel(C, inline=1, fontsize=10)
pl.xticks(())
pl.yticks(())
pl.text(-0.05, 1.02, " Contour Plot: pl.contour(..)\n",
horizontalalignment='left',
verticalalignment='top',
size='xx-large',
bbox=dict(facecolor='white', alpha=1.0, width=400, height=65),
transform=pl.gca().transAxes)
pl.text(-0.05, 1.01, "\n\n Draw contour lines and filled contours ",
horizontalalignment='left',
verticalalignment='top',
size='large',
transform=pl.gca().transAxes)
pl.show()