Hi,Up for my previous answer.
I was wrong for lines and area values POSACC, QUAPOS are on edges and not on
"real object".
RegardsTed
De : David Ferdoille <[email protected]>
À : [email protected]
Envoyé le : Mercredi 27 juillet 2016 15h12
Objet : [gdal-dev] OGR - S57 - geometry extraction issue
Hello all,
We are trying to render S57 files as ENC through Geoserver.
We convert S57 to shapefiles thanks to ogr2ogr : 1 shapefile for 1 class (ex :
COALNE) and 1 geometry type (LINE) : ogrinfo -oo "RETURN_PRIMITIVES=ON" -oo
"RETURN_LINKAGES=ON" -oo "LNAM_REFS=ON" CELLLL.000 COALNE ogr2ogr -skipfailures
-where "OGR_GEOMETRY='POINT' or OGR_GEOMETRY='MULTIPOINT'" SOUNDG_points.shp
CELLLL.000 SOUNDG
We use gdal-2.1.0 with the S57_CSV environnement variable
(S57_CSV=/usr/local/share/gdal/ with s57*.csv files).
We noticed that objects (of COALNE class for example) have multiple geometries
and each sub-geometry have attributes like POSACC and QUAPOS which are
important for S52 representation. We've succeeded to extract primitives (Edge,
isolated points, connected points, ...), but it looks very complex to operate.
We have some problems to extract geometries from s57 objects :- we noticed
that, for an object, all sub-geometries are aggregated to one geometry- we
didn't succeed to extract geometry attributes like POSACC and QUAPOS
1) Is there a way to not aggregate sub-geometries of an object and get this
list of sub-geometries ?2) Is there a way to extract geometry attributes like
POSACC and QUAPOS ?3) If not, are these features planned ?
Thanks for your help !
David
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