[gdal-dev] OSM to KML Error

[Even Rouault]

Le mercredi 03 juillet 2013 13:20:10, Josua S a écrit :
> Hello
> 
> I exported an OSM file from openstreetmap.org and tried to convert it to
> KML with GDAL/OGR 1.10.0. However the conversion does not succeed and I
> get a lot of these errors: "ERROR 6: Interleaved feature adding to
> different layers is not supported". Is this a known problem and is there a
> solution to prevent this error? Thank you very much.

Josua,

When converting OSM files with ogr2ogr, the features are read in an interleaved 
way. For example, you can get X features from layer lines, then Y features 
from layer multipolygons, then Z features from layer lines again, etc...

The writing part of the KML driver doesn't support that back-and-forth between 
layers, hence this error.

A workaround is to convert to an intermediary format such as shapefile, 
PostGIS, sqlite/spatialite, gml, etc... that support writing features in 
layers in an interleaved way. Then you can convert to KML.

Best regards,

Even

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