Camille,
I do not understand your question, but the problem can probably be solved
with 'rasterize', perhaps with argument  mask=TRUE or  update=TRUE
Best, Robert

On Tue, Mar 6, 2012 at 6:30 AM, Camille Leclerc
<camille.leclerc@ymail.com>wrote:

> Hi everybody,
>
> My problem is this : I have a raster layer of world temperature and I have
> also a shapefile representing a region of the world. I want obtain a new
> raster
> layer of world temperature without the values at region shapefile.
>
> Thank for your help,
>
> Camille Leclerc
>
> -----------------------------------
> Camille Leclerc, Master student
> Lab ESE, UMR CNRS 8079
> Univ Paris-Sud
> Bat 362
> F-91405 Orsay Cedex France
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>
>
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