Torsten,
I try to render a track that i captured with my GPS data logger
yesterday.
The data logger is a Columbus V-900 and it captures a CSV file.
The OGR driver may be able to read directly from the csv:
http://www.gdal.org/ogr/drv_csv.html
Now i extended osm.xml to render the track in /local/mapnik/track.gpx:
<Style name="qwetrack">
<Rule>
<MaxScaleDenominator>5000000000</MaxScaleDenominator>
<PointSymbolizer file= "/local/mapnik/symbols/point.png"
type="png"
width="16" height="16" />
</Rule>
</Style>
Are you sure the data are points not lines?
Maybe you should stick a LineSymbolizer in there just to be safe?
<Layer name="track" status="on" srs="+proj=merc +a=6378137 +b=6378137
+lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgri...@null
+no_defs +over">
<StyleName>qwetrack</StyleName>
<Datasource>
<Parameter name="type">ogr</Parameter>
<Parameter name="file">/local/mapnik/track.gpx</Parameter>
</Datasource>
</Layer>
This *should* be throwing an error because you have not provided a
'layer' parameter for the OGR plugin.
See: http://trac.mapnik.org/wiki/OGR#Usage
But i don't get no error
That is surprising.
and i don't see the track.
That is not! :)
Maybe you should try getting the ogr driver working with some sample
GPX data first that you know is valid, then try again with your
converted csv?
Dane
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