[R-sig-Geo] clip a SpatialPolygonsDataFrame

[Roger Bivand]

On Thu, 5 Aug 2010, Laetitia Blanc wrote:

>
> Thank you for your answer...so quick.
>
> i needed to clip my map because i have realised a  Kernel Density Estimation
> for successive years.
>
> I have then animated this KDE. Thus, we can see the evolution of density
> estimation running from year to year.
>
> I wanted to insert a map in the background in order to situate this
> analysis. It only concern one part of France so i tried to clip the map in
> order to match with the window of the KDE...but it doesn't work.
>
> Do you know how i can have a fixed map and add a KDE animated on it ?
>

Did you try to use the xlim= and ylim= arguments to your plotting commands 
as I suggested? You do not need the clipped polygons for analysis, so this 
route should work.

Roger


-- 
Roger Bivand
Economic Geography Section, Department of Economics, Norwegian School of
Economics and Business Administration, Helleveien 30, N-5045 Bergen,
Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43
e-mail: Roger.Bivand at nhh.no