Hi,
I am trying to add a (configurable) colorbar to a an array which I simply plot with imshow().
Could anyone please help me how to enhance it with a colorbar?
import scipy,pylab
import matplotlib.cm as cm # colormaps
import matplotlib.colors as col # colormaps
dat = scipy.array([[1,2,3,4],[5,6,7,8]])
fig = pylab.figure()
ax = pylab.gca()
ax.set_title(‘the title’)
here’s chaos
#cmap = cm.get_cmap(‘rainbow’, 20) # 10 discrete colors
#ax.imshow(dat, cmap=cmap, interpolation=‘nearest’)
#fig.colorbar(dat)
#min,max = dat.min(),dat.max()
ax.imshow(dat,interpolation=‘nearest’)
pylab.show()
Thanks a lot in advance,
Daniel
Hi,
I am trying to add a (configurable) colorbar to a an array which I
simply plot with imshow().
Could anyone please help me how to enhance it with a colorbar?
Check out the gallery; several examples there use a colorbar. http://matplotlib.sourceforge.net/gallery.html
Then look for relevant sections in the docs, such as
http://matplotlib.sourceforge.net/users/image_tutorial.html
http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.colorbar
etc.
Eric
···
On 02/07/2011 10:48 AM, Daniel Mader wrote:
import scipy,pylab
import matplotlib.cm <http://matplotlib.cm> as cm # colormaps
import matplotlib.colors as col # colormaps
dat = scipy.array([[1,2,3,4],[5,6,7,8]])
fig = pylab.figure()
ax = pylab.gca()
ax.set_title('the title')
## here's chaos
#cmap = cm.get_cmap('rainbow', 20) # 10 discrete colors
#ax.imshow(dat, cmap=cmap, interpolation='nearest')
#fig.colorbar(dat)
#min,max = dat.min(),dat.max()
ax.imshow(dat,interpolation='nearest')
pylab.show()
Thanks a lot in advance,
Daniel
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Thanks a lot Thomas,
besides that it should be
fig.colorbar(im)
instead of
ax.colorbar(im)
the example works great!
Best regards,
Daniel
2011/2/7 Eric Firing
···
On 02/07/2011 10:48 AM, Daniel Mader wrote:
Hi,
I am trying to add a (configurable) colorbar to a an array which I
simply plot with imshow().
Could anyone please help me how to enhance it with a colorbar?
Check out the gallery; several examples there use a colorbar.
http://matplotlib.sourceforge.net/gallery.html
Then look for relevant sections in the docs, such as
http://matplotlib.sourceforge.net/users/image_tutorial.html
http://matplotlib.sourceforge.net/api/pyplot_api.html#matplotlib.pyplot.colorbar
etc.
Eric
import scipy,pylab
import matplotlib.cm <http://matplotlib.cm> as cm # colormaps
import matplotlib.colors as col # colormaps
dat = scipy.array([[1,2,3,4],[5,6,7,8]])
fig = pylab.figure()
ax = pylab.gca()
ax.set_title(‘the title’)
here’s chaos
#cmap = cm.get_cmap(‘rainbow’, 20) # 10 discrete colors
#ax.imshow(dat, cmap=cmap, interpolation=‘nearest’)
#fig.colorbar(dat)
#min,max = dat.min(),dat.max()
ax.imshow(dat,interpolation=‘nearest’)
pylab.show()
Thanks a lot in advance,
Daniel