draw contourf on top of continents with basemap?

Community matplotlib-users
1

Dear all,

I want to draw a contourf with the data covering N>45 (high latitude) using a ‘npstere’ projection.

The problem is if I draw continents with a gray color, (m.fillcontinents(color=‘0.5’))
the contourf lay which comes later will be below the continents and completely invisible.
Does anyone else have this and any suggestions?

thanks,

Chao

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Chao YUE
Laboratoire des Sciences du Climat et de l’Environnement (LSCE-IPSL)
UMR 1572 CEA-CNRS-UVSQ
Batiment 712 - Pe 119
91191 GIF Sur YVETTE Cedex

Tel: (33) 01 69 08 29 02; Fax:01.69.08.77.16

2

Dear all,

I want to draw a contourf with the data covering N>45 (high latitude)
using a 'npstere' projection.

The problem is if I draw continents with a gray color,
(m.fillcontinents(color='0.5'))
the contourf lay which comes later will be below the continents and
completely invisible.
Does anyone else have this and any suggestions?

I think you will be able to solve this problem be setting the zorder of each patch collection in the object returned by the call to contourf, something like this:

CS = contourf(Z)
for col in CS.collections:
     col.set_zorder(2.5)

The default zorder for solids is 2, so I expect that is what the filled continents are; boosting the patch collections to 2.5 should ensure they are above the continents.

Eric

···

On 01/02/2012 08:36 AM, Chao YUE wrote:

thanks,

Chao
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Chao YUE
Laboratoire des Sciences du Climat et de l'Environnement (LSCE-IPSL)
UMR 1572 CEA-CNRS-UVSQ
Batiment 712 - Pe 119
91191 GIF Sur YVETTE Cedex
Tel: (33) 01 69 08 29 02; Fax:01.69.08.77.16
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