Re: [Matplotlib-users] Bug in colorbar()

[Eric F. <ef...@ha...>]

On 2012/07/30 1:17 AM, Jeffrey Spencer wrote:
> I'd agree as then it would work as pcolormesh or imshow does which when
> passed in the same norm will only set vmin or vmax that wasn't
> previously set.
>
> Assume this would be a really easy fix but I can have a look at
> submitting a patch if someone else isn't going to do so just let me know.

I will take care of it, thanks.

Eric

>
> Cheers,
> Jeff
>
> On Mon, Jul 30, 2012 at 2:31 AM, Eric Firing <ef...@ha...
> <mailto:ef...@ha...>> wrote:
>
>     On 2012/07/29 5:13 AM, Jeffrey Spencer wrote:
>
>         Eric,
>
>         Normalize appears to be working correctly and as you stated
>         above but
>         when passed into contourf appears to have inconsistent results not
>         following the docstring by allowing the value to change.
>
>         Quick examples:
>
>         X, Y = meshgrid(arange(20),arange(20)__)
>         Z = arange(20*20)
>         Z = Z.reshape(20,20)
>         norm = colors.Normalize(vmin=200,__vmax=None)
>         print norm.vmin
>         fig = figure(10)
>         ax = fig.add_subplot(111)
>         surf = ax.contourf(X,Y,Z, 100, cmap=matplotlib.cm.jet, norm = norm)
>
>         This vmin has no effect where if you pass in:
>
>         X, Y = meshgrid(arange(20),arange(20)__)
>         Z = arange(20*20)
>         Z = Z.reshape(20,20)
>         norm = colors.Normalize(vmin=200,__vmax=Z.max())
>         print norm.vmin
>         fig = figure(10)
>         ax = fig.add_subplot(111)
>         surf = ax.contourf(X,Y,Z, 100, cmap=matplotlib.cm.jet, norm = norm)
>
>         it has the desired effect.
>
>         Let me know if this is correct or I'm missing something here.
>
>         Cheers,
>         Jeff
>
>
>     You are correct.  Contour and contourf are respecting vmin, vmax
>     that have been set in the norm only if both have been set, so that
>     it is fully scaled.  I think that changing this to respect a single
>     preset vmin or vmax would be reasonable.
>
>     Eric
>
>