[R] merge maps from shapefile to lattice

[Toni Viúdez]

Hi everybody:
Could anybody help how I solve the next problem?.
I'm doing interpolation maps of tropospheric ozone of my region, and after 
create it using IDW, and kriging methods, I want from shapefiles (*.shx, 
*.shp, *.dbf, *.sbx & *.sbn ) create contour over the interpolation maps.
Could anybody tell me how do it?.
Thanks in advance.

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Antonio Viudez Mora
Departamento de Dinámica
 de Contaminantes
Fundación CEAM
Paterna (Valencia)
tel: 961318190. ext: 216
e-mail:toni at ceam.es
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