Hi, Thanks for the all the information on kml's and rebuilding gdal which sets me on a new paths using stuff like VC++, source codes, etc. I started this 'excercise' because we receive more and more kml-files (from Google Earth) of observers with the outlines of plots and/or observations. But reading kml's is apparently a lot more difficult than I anticipated. That may also explain why there are hardly any scripts or programs that can deal with it. Tom Hengl suggested to use the XML-package and I will also look into that. I will let you know about the results. Henk Henk Sierdsema SOVON Vogelonderzoek Nederland / SOVON Dutch Centre for Field Ornithology Rijksstraatweg 178 NL-6573 DG Beek-Ubbergen The Netherlands tel: +31 (0)24 6848145 fax: +31 (0)24 6848122
________________________________ Van: Roger Bivand [mailto:[email protected]] Verzonden: di 6-1-2009 15:39 Aan: Henk Sierdsema CC: Edzer Pebesma; [email protected] Onderwerp: Re: [R-sig-Geo] Converting kml to shape (readOGR) On Tue, 6 Jan 2009, Henk Sierdsema wrote: > I have installed Expat XML Parser, but how do I rebuilt GDAL/OGR? Since you are on Windows, please read: file.show(system.file("README.windows", package="rgdal")) One suggestion is to use ogr2ogr in the latest Windows binary FWTools collection for example through system() for doing this within R - see the GDAL site for links. Building the package yourself using FWTools may be useful if you need to know, if you don't, use an alternative. On Unix/Linux/OSX with the underlying libraries present, this would have worked (with the curiosity that only the KML driver is default write only, but returns the read/write capability even if it cannot read - the choices it gets are read or read/write, but no write-only. Roger > > Henk > > > Henk Sierdsema > > SOVON Vogelonderzoek Nederland / SOVON Dutch Centre for Field Ornithology > > Rijksstraatweg 178 > 6573 DG Beek-Ubbergen > The Netherlands > tel: +31 (0)24 6848145 > fax: +31 (0)24 6848122 > > > > -----Oorspronkelijk bericht----- > Van: Edzer Pebesma [mailto:[email protected]] > Verzonden: dinsdag 6 januari 2009 12:16 > Aan: Henk Sierdsema > CC: [email protected] > Onderwerp: Re: [R-sig-Geo] Converting kml to shape (readOGR) > > > > > Henk Sierdsema wrote: >> Hi, >> >> I've been trying to convert a vector kml-file to an ESRI shape with >> readOGR(), but I don't manage to read the kml-file. Can anyone help me with >> this? >> > http://www.gdal.org/ogr/ogr_formats.html mentions at KML that "read > support needs libexpat". Further it says "KML reading is only available > if GDAL/OGR is built with the Expat XML Parser, otherwise only KML > writing will be supported." > > Maybe this was missing while your gdal/rgdal was built? > -- > Edzer >> Thnx, >> >> Henk Sierdsema >> >> >> SOVON Vogelonderzoek Nederland / SOVON Dutch Centre for Field Ornithology >> >> Rijksstraatweg 178 >> 6573 DG Beek-Ubbergen >> The Netherlands >> tel: +31 (0)24 6848145 >> fax: +31 (0)24 6848122 >> >> _______________________________________________ >> R-sig-Geo mailing list >> [email protected] >> https://stat.ethz.ch/mailman/listinfo/r-sig-geo >> > > -- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Helleveien 30, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43 e-mail: [email protected] _______________________________________________ R-sig-Geo mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-geo
