Re: [Matplotlib-users] manual placement of a colorbar

This doesn't work for what I'm doing. Unless I call "contour" or something
similar, this will fail. I am only using m.plot and this doesn't set things
up properly to call "colorbar".



On Thu, Apr 1, 2010 at 12:40 PM, Jeff Whitaker <js...@fa...> wrote:

> On 4/1/10 1:24 PM, Mathew Yeates wrote:
>
>> Hi
>>
>> I have a Basemap and I want to manually add a colorbar to the side. As you
>> can see in the attached image, the colorbar is not correctly positioned.
>>
>> Here is a snippet of code
>>
>> ax=fig.add_axes([0.1,0.1,0.8,.8])
>> m = Basemap(resolution='c',projection='cyl',lon_0=0,ax=ax)
>>
>> cax = fig.add_axes([0.9, 0.1, 0.1, 0.8]) # setup colorbar axes.
>> cmap = mpl.cm.cool
>> norm = mpl.colors.Normalize(vmin=5, vmax=10)
>> cb1 = mpl.colorbar.ColorbarBase(cax, cmap=cmap,
>>                                       norm=norm,
>>                                       orientation='vertical')
>>
>> what am I doing wrong?
>>
>> Mathew
>>
> Nothing.  You just have to tweak the cax parameters to get it positioned
> where you want it.
>
> A quick and dirty approach would be to let matplotlib position the colorbar
> by using
>
> import matplotlib.pyplot as plt
>
> <plot stuff on basemap>
>
> plt.colorbar(orientation='vertical',shrink=0.5)  # play with the shrink
> param to get it to be the same size as the map
>
> -Jeff
>
>
> --
> Jeffrey S. Whitaker         Phone  : (303)497-6313
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>