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 convert these maps to vector (shapefiles) format, because I need join some attributes to each feature (polygon). I can do it on ArcGis, and use the spatial analyst extentention, and convert one by one, but unfortunately as I have 1,000 maps, it is so time consuming.

I thougth that there are some package/function on R that vectorize a raster (ascGrid) format.

Any ideas?

miltinho


----- Mensagem original ----
De: Roger Bivand <Roger.Bivand@nhh.no>
Para: Milton Cezar Ribeiro <milton_ruser@yahoo.com.br>; r-sig-geo@stat.math.ethz.ch
Enviadas: Quarta-feira, 20 de Junho de 2007 17:29:16
Assunto: ODP: [R-sig-Geo] Generating vetor (shapefiles) in R


Grids are not vector format - you could coerce the SpatialGridDataFrame to a SpatialPointsDataFrame, but is this the kind of output you need? SpatialPixels can also be coerced to SpatialPolygons rectangles, but what you do will depend on your needs.
 
Roger
 
--- Roger Bivand, NHH, Helleveien 30, N-5045 Bergen, Roger.Bivand@nhh.no




Od: r-sig-geo-bounces@stat.math.ethz.ch w imieniu Milton Cezar Ribeiro
Wys䕪лno: 蘨鈜 20.06.2007 16:28
Do: r-sig-geo@stat.math.ethz.ch
Temat: [R-sig-Geo] Generating vetor (shapefiles) in R


Hi there,

I need to convert a raster (ascGrid) format to Shape files.
Is there a way of to do that on R?

Kind regards

miltinho


      
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