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- import matplotlib
- matplotlib.use('Agg')
- from mpl_toolkits.basemap import Basemap
- import matplotlib.pyplot as plt
- from numpy import array
- x_min = 10 ; x_max = 21.
- y_min = -20. ; y_max = -10.
- lon_box = array ( [x_min, x_min, x_max, x_max, x_min])
- lat_box = array ( [y_min, y_max, y_max, y_min, y_min])
- # this example shows how to save a map background and
- # reuse it in another figure.
- # make sure we have all the same properties on all figs
- figprops = dict(figsize=(8,6), dpi=100, facecolor='white')
- # generate the first figure.
- fig1 = plt.figure(1,**figprops)
- ax1 = fig1.add_axes([0.1,0.1,.8,.8])
- # create basemap instance, plot coastlines.
- map = Basemap(projection='moll',lon_0=0)
- map.drawcoastlines()
- #map.drawmapboundary(fill_color='aqua')
- map.fillcontinents(color='coral',lake_color='aqua')
- ax3 = fig1.add_axes([0.1,0.75,0.25,0.25])
- m2 = Basemap(projection='ortho',lon_0=6,lat_0=-12,ax=ax3)
- (x,y) = m2 (lon_box, lat_box)
- #m2.drawmapboundary(fill_color='#33339F')
- m2.drawcoastlines(linewidth=0.1)
- m2.fillcontinents(color='chocolate',lake_color='#33339F')
- m2.plot ( x, y, '-r', lw=2)
- fig1.canvas.draw()
- background = fig1.canvas.copy_from_bbox(fig1.bbox)
- fig1.savefig('figure1.png', dpi=100)
- # generate the second figure, re-using the background
- # from figure 1.
- for i in xrange(5):
- fig2 = plt.figure(2,frameon=False,**figprops)
- ax2 = fig2.add_subplot(111, frameon=False, xticks=[], yticks=[])
- #ax2 = fig2.add_axes ([0.1, 0.1, 0.8, 0.8])
- # restore previous background.
- fig2.canvas.restore_region(background)
- # draw parallels and meridians on existing background.
- map.drawparallels(range(-90,90,30))
- map.drawmeridians(range(-180,180,60))
- fig2.savefig('figure%d.png'%(i+2), dpi=100)
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