#!/usr/bin/python

'''
Description:	Create colorbar as separate figure
Keywords:		matplotlib, pyplot, colorbarcase, colormap, boundarynorm
'''

from matplotlib import pyplot
import matplotlib as mpl

# Make a figure and axes with dimensions as desired.
fig = pyplot.figure(figsize=(8,2))
ax1 = fig.add_axes([0.05, 0.80, 0.9, 0.15])

ax3 = fig.add_axes([0.05, 0.15, 0.9, 0.15])

# The third example illustrates the use of custom length colorbar
# extensions, used on a colorbar with discrete intervals.
cmap = mpl.colors.ListedColormap([[0., .4, 1.], [0., .8, 1.],
    [1., .8, 0.], [1., .4, 0.]])
cmap.set_over((1., 0., 0.))
cmap.set_under((0., 0., 1.))

bounds = [100, 200, 300, 400, 500]
swbsTicks = [50, 150, 250, 350, 450, 550]
norm = mpl.colors.BoundaryNorm(bounds, cmap.N)
cb3 = mpl.colorbar.ColorbarBase(ax3, cmap=cmap,
                                     norm=norm,
                                     boundaries=[-10]+swbsTicks+[10],
                                     extend='both',
                                     # Make the length of each extension
                                     # the same as the length of the
                                     # interior colors:
                                     extendfrac='auto',
                                     ticks=bounds,
									 spacing='uniform',
                                     orientation='horizontal')
cb3.set_label('Custom extension lengths, some other units')

pyplot.show()