[R-sig-Geo] writeOGR to GPX file: empty table

[Agustin Lobo]

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

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