[gdal-dev] python CreateFeature() error when converting OGR features from gpsbabel layer to PostGIS layer

[Even Rouault]

Selon James Hiebert <hiebert at uvic.ca>:

> Hi All,
>
> For months I've been happily pulling GPS tracks into PostGIS using ogr in a
> pretty simple python script.  The essence of it approximately this:
>
> rlyr = ogr.Open(gpsbabel_src).GetLayerByName('tracks')
> wlyr = ogr.Open(pg_con_string).GetLayerByName('tracks')
>
> fid_map = {}
>
> for feat in rlyr:
>     fFID = feat.GetFID()
>     feat.SetFID(-1)

The error is there. It is illegal to call CreateFeature() on layer wlyr directly
with a feature from layer rlyr. You need to instanciate a feature with the layer
definition of layer wlyr, and copy the fields from the source feature into it

      src_feat = feat
      feat = ogr.Feature(wlyr.GetLayerDefn())
      feat.SetFrom(src_feat)

>     rv = wlyr.CreateFeature(feat)
>     fid_map[fFID] = feat.GetFID()
>