Re: [Matplotlib-users] modifying colorbar ticklabels

[Mario M. <me...@me...>]

> Can you elaborate why you need to do this?

As you can see in my example:

#------
import numpy as np
from matplotlib import pyplot,mpl

x = np.arange(10)
y = np.arange(25)
z = np.floor(10*np.random.random((25,10)))

pyplot.contourf(x,y,z)

cb = pyplot.colorbar()

pyplot.show()
#------

the smallest value (0.0) is labeled with "-0.0". I just want to get rid of the minus sign.

Cheers

Mario

> This is a general behavior of Axes in matplotlib (i.e., not colorbar
> specific). There are things that are evaluated later when the figure
> gets drawn.
> You may use iter_ticks method if it fits your need.
>
> for j, p, l in cb.ax.yaxis.iter_ticks():
>      print l
>
> To change the ticklabels of colorbar, they need to be set when the
> colorbar is created, as Scott suggested. This is a limitation of the
> current colobar implementation. Changing ticklabels (or locations)
> after colorbar is created is quite tricky.
>
> Regards,
>
> -JJ


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Dr. Mario Mech

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