[gdal-dev] [User] OGR2OGR append update duplicates

[Emmanuel Séguin]

Hi,

I'm using ogr2ogr to merge shapefiles (ogr2ogr -append -update -f "ESRI 
Shapefile" file1.shp file2.shp -nln file1.shp).
It seems to me that duplicate records are possible in the resulting 
shapefile (based on tests using two identical shapefiles).
=> Is there a way to merge two shapefiles with gdal/ogr and avoid 
duplicate records to be created in the resulting shapefile ?

Thanx in advance

Manu

-- 
Emmanuel Séguin
SIEL - Pôle technique du Géoportail
Institut Géographique National
2/4, avenue Pasteur - 94165 Saint Mandé Cedex
Phone : +33 1.43.98.83.54
http://fr.linkedin.com/in/emmmanuelseguin