Re: [Matplotlib-users] basemap plots

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

Lionel,

Assuming you have the current version of mpl, use the "extend" kwarg:

     colorbar properties:

         extend=3D'neither', 'both', 'min', 'max'
                 If not 'neither', make pointed end(s) for out-of-ran=
ge
                 values.  These are set for a given colormap using th=
e
                 colormap set_under and set_over methods.

If the colorbar is attached to a filled contour plot, however, you do=
=20
not need to specify this kwarg in the colorbar call because it will b=
e=20
grabbed from the ContourSet object.

Eric


Lionel Roubeyrie wrote:
> HI,
> how do you set the arrows on the bottom and the top of your colorba=
r? I don't=20
> find any option for that?
> Thanks
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> Le Vendredi 07 Juillet 2006 10:11, dd...@ja... a =C3=A9cr=
it :
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>>On Friday 07 July 2006 4:11 pm, Lionel Roubeyrie wrote:
>>
>>>Hi all,
>>>Is it possible to import colormap file from GMT (.cpt) to basemap?
>>>If yes how can we do that?
>>>Thanks
>>
>>It's possible. Here's how I've been doing it.
>>
>>(1) I use the gmtcolormapPylab function defined in:
>>http://sourceforge.net/mailarchive/message.php?msg_id=3D11255878
>>
>>(2) Using the above function and a GMT cpt file (e.g.
>>GMT_no_green.cpt), I set a color dictionary as:
>>cdict =3D gmtcolormapPylab("GMT_no_green")
>>
>>(3) I define a colormap using:
>>mycmap =3D cm.colors.LinearSegmentedColormap("GMT_no_green",cdict,2=
56)
>>
>>(4) I apply the above using cmap=3Dmycolormap in contourf or pcolor=
mesh.
>>
>>By the way, in case you don't know of the following site, it has an
>>exhaustive selection of color palettes: http://cpt-city.org.uk/
>>
>>I've also attached an example of a basemap image using a cpt from t=
he
>>above site. Masked values not defined by the colormap are shown in
>>gray.
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