I have posted this in the user sub forum as well because i'm not sure that it is a user issue or development issue. Information about my problem and my code are here http://matplotlib.1069221.n5.nabble.com/Assign-labels-to-colorbar-extensions-user-or-development-issue-td44392.html <http://matplotlib.1069221.n5.nabble.com/Assign-labels-to-colorbar-extensions-user-or-development-issue-td44392.html> Is it possible to assign tick labels/values to extensions? If so, how can I do it -- View this message in context: http://matplotlib.1069221.n5.nabble.com/Development-issue-Assign-labels-to-colorbar-extensions-tp44393.html Sent from the matplotlib - devel mailing list archive at Nabble.com.