[R-sig-Geo] Problem with SpatialPolygons.SpatialPixels object

[Edzer Pebesma]

the function is no longer exported as function, but rather as coerce method:

gridPol <- as(gridPix, "SpatialPolygons")

will call this function. Calling the old function can be done with

gridPol <- sp:::as.SpatialPolygons.SpatialPixels(gridPix)

but is not recommended - names of unexported functions may change
without warning.

On 03/17/2013 12:54 PM, ASANTOS wrote:
> Dear list members,
> 
>     I'm trying to create a as.SpatialPolygons.SpatialPixels object with
> sp package, normally this function works, but I try to use without
> success, above a example in this list posted by Dr. Justiniano:
> 
> ##
> require(sp)
> set.seed(12)
> xy <- cbind(runif(n=500,min=0, max=20),
>              runif(n=500,min=0, max=20))
> ## points
> pontos <- SpatialPoints(xy)
> ## grid of "quadrats"
> ## i. as SpatialGrid
> grid <- SpatialGrid(grid = GridTopology(c(0.5,0.5), c(1,1), c(20,20)))
> ## ii. as SpatialPixels
> gridPix <- grid
> fullgrid(gridPix) <- FALSE
> ## iii. as SpatialPolygons
> gridPol <- as.SpatialPolygons.SpatialPixels(gridPix)
> #
>     And my question is whats is happening with the
> as.SpatialPolygons.SpatialPixels() function?
> 
> Thanks
> 

-- 
Edzer Pebesma
Institute for Geoinformatics (ifgi), University of Münster
Weseler Straße 253, 48151 Münster, Germany. Phone: +49 251
8333081, Fax: +49 251 8339763  http://ifgi.uni-muenster.de
http://www.52north.org/geostatistics      e.pebesma at wwu.de