[Matplotlib-users] imshow() with colorbar and custom range?

[Daniel M. <dan...@go...>]

Hi all,

I'd like to compare two sets of data by using subplots and imshow(). I
have two issues with this:

1) how can I have a colorbar in each subplot?
2) how can I adjust the range limits for a colorbar, so that the
comparison possible?

Below is code which could serve as a starting point, I hope it helps
to make my problem clearer...

Thanks and best regards,
Daniel

import pylab
#import matplotlib as mpl
import matplotlib.cm as cm # colormaps
#import matplotlib.colors as col # colormaps

pylab.close('all')

dat = pylab.array([[1,2,3,4],[5,6,7,8]])
datT = dat/2

fig = pylab.figure()

ax1 = fig.add_subplot(211)
ax1.set_title('raw data')
im = ax.imshow(dat, interpolation='nearest', cmap=cm.get_cmap('rainbow', 20))
fig.colorbar(im)

ax2 = fig.add_subplot(212)
ax2.set_title('transformed')
''' here is missing:
a 2nd colorbar with the same limit than in the first subfig, i.e. 1..8
'''

pylab.show()