```r
## Folder /rasters/arne must exist !

writeRaster(dsm,"rasters/arne/dsm.tif",format="GTiff", overwrite=TRUE)
writeRaster(dtm,"rasters/arne/dtm.tif",format="GTiff", overwrite=TRUE)
writeRaster(slope,"rasters/arne/slope.tif",format="GTiff", overwrite=TRUE)
writeRaster(aspect,"rasters/arne/aspect.tif",format="GTiff", overwrite=TRUE)
```