Roger, There is actually information in the file, i.e. the first point is:
<?xml version="1.0"?> <gpx version="1.1" creator="GDAL 1.6.3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"; xmlns:ogr="http://osgeo.org/gdal"; xmlns="http://www.topografix.com/GPX/1/1"; xsi:schemaLocation="http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd";> <wpt lat="41.800745980899059" lon="2.359550956673553"> <extensions> <ogr:Comentario>4</ogr:Comentario> <ogr:Rcvr_Type>Juno ST</ogr:Rcvr_Type> <ogr:GPS_Date>2009/10/27</ogr:GPS_Date> <ogr:GPS_Time>03:09:11pm</ogr:GPS_Time> <ogr:Datafile>AILANTO27102009.SSF</ogr:Datafile> <ogr:GPS_Height>1089.392</ogr:GPS_Height> <ogr:Northing>4627933.603</ogr:Northing> <ogr:Easting>446791.833</ogr:Easting> <ogr:PDOP_max>0</ogr:PDOP_max> <ogr:HDOP_max>0</ogr:HDOP_max> <ogr:Fecha_GPS>0000/00/00</ogr:Fecha_GPS> <ogr:PosNofilt>0</ogr:PosNofilt> <ogr:Pos_filt>0</ogr:Pos_filt> <ogr:Semana_GPS>0</ogr:Semana_GPS> <ogr:Segundo_GP>0</ogr:Segundo_GP> <ogr:Altura_GPS>0</ogr:Altura_GPS> <ogr:Prec_vert>0</ogr:Prec_vert> <ogr:Prec_horz>0</ogr:Prec_horz> <ogr:Dev_Tp>0</ogr:Dev_Tp> <ogr:Norte>0</ogr:Norte> <ogr:Este>0</ogr:Este> <ogr:Abundancia>4</ogr:Abundancia> </extensions> </wpt> Cannot read it in R. Maybe I'm not using the appropriate settings for dsn and layer (I've tried many alternatives): > writeOGR(AilantMSY09WGS84LL, > dsn="/media/TRANSCEND/MONTSENY2008/MONTSENY_GEODATA/FloraExotica2009/AilantMSY09R.gpx",layer="AilantMSY09R",driver="GPX",dataset_options="GPX_USE_EXTENSIONS=YES") > test <- > readOGR(dsn="/media/TRANSCEND/MONTSENY2008/MONTSENY_GEODATA/FloraExotica2009/AilantMSY09R.gpx",layer="AilantMSY09R")Error > in ogrInfo(dsn = dsn, layer = layer, input_field_name_encoding = > input_field_name_encoding) : Cannot open layer Agus -- View this message in context: http://r-sig-geo.2731867.n2.nabble.com/writeOGR-to-GPX-file-empty-table-tp5064393p5064652.html Sent from the R-sig-geo mailing list archive at Nabble.com. _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo
