Stephane, dear R listers, I wonder if the idea of developping some functions in R writing shapefiles from a matrix of coordinates -eg poly2shape()- is still with us? I currently manage with a home-made function writing an ASCII grass file, then importing it into GRASS as vector file, then exporting the vector file as a shapefile (ouf!). The main issue to me is still to be capable to wite the *.shx and *.shp from coordinates (the *.dbf is easier to manage, even indirectly, and can for instance be completed simply via Excel). I tried to open *.shp, etc.. files to understand how they were structured and thus write some programme by myself, but unsuccessfully (the way those files are coded is not ascii)
Maptools is fantastic for importation and data handling within R, but unfortunately cannot export to shapefiles. Any news? Patrick Giraudoux PS: ESRI has managed to distribute ArcTools (with ArcGIS) with no way to importe generate ASCII formats!!! One must get ArcINFO for that... No comment! ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
