Dear sig-geos,
I have to calculate a distmap (that is, a map
in which the value of each cell is the distance
from the cell to a given object) for a set of polygons.
It seems to me that distmap.owin in spatstat would do it
fine, but distmap.owin does not accept objects
imported from shp vectors via
The root of the problem was that you did not notice that writeAsciiGrid in
maptools can *only* write square grid cells, not rectangular grid cells. The
following code shows how both spatstat and splancs can be set up to make square
cells:
library(spatstat)
library(maptools)
d <- readShapePoi
What about using grass 6 and the command r.to.vect - you can do this
from R with the package spgrass6
Rainer
Milton Cezar Ribeiro wrote:
Dear Roger,
I am simulating some analyzes on R, and the output are a lot of AscGrid
(raster) maps. After generate these maps (about 1,000 of them), I need
