/usr/share/doc/python-mpltoolkits.basemap-doc/examples/simpletest.py is in python-mpltoolkits.basemap-doc 1.0.7+dfsg-4.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 | from mpl_toolkits.basemap import Basemap
import numpy as np
import matplotlib.pyplot as plt
# read in topo data (on a regular lat/lon grid)
etopo=np.loadtxt('etopo20data.gz')
lons=np.loadtxt('etopo20lons.gz')
lats=np.loadtxt('etopo20lats.gz')
# create Basemap instance for Robinson projection.
m = Basemap(projection='robin',lon_0=0.5*(lons[0]+lons[-1]))
# make filled contour plot.
x, y = m(*np.meshgrid(lons, lats))
cs = m.contourf(x,y,etopo,30,cmap=plt.cm.jet)
# draw coastlines.
m.drawcoastlines()
# draw parallels and meridians.
m.drawparallels(np.arange(-60.,90.,30.),labels=[1,0,0,0])
m.drawmeridians(np.arange(0.,360.,60.),labels=[0,0,0,1],fontsize=12)
m.colorbar(location='bottom',pad='10%')
# add a title.
plt.title('Robinson Projection')
plt.show()
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