Frank, As said I have my system variable as
"RETURN_PRIMITIVES=ON,RETURN_LINKAGES=ON,LNAM_REFS=ON, UPDATES=APPLY,SPLIT_MULTIPOINT=ON,ADD_SOUNDG_DEPTH=ON" but still I couldn't see TOPI field retrieved in my dataset.. Will you elaborate and let me know. I have one more question: How do we find area outer boundaries are encoded clockwise based on Orientation or USAG. here when I retrieve S57 dataset I get multiple ORNT values for a single object. Thanks and Regards Nikhil Sai Parupalli Note: Do not print this email until and unless it is really required. Save paper , stay Green ________________________________ From: [email protected] [[email protected]] on behalf of Frank Warmerdam [[email protected]] Sent: Saturday, October 06, 2012 2:32 AM To: Nikhil Sai Parupalli Cc: [email protected] Subject: Re: [gdal-dev] Topological pointer Nikhil, >From the code it appears the TOPI field will be represented on the vector >primitives when you enable treating vector primitives as features. To enable >this you need to set the RETURN_PRIMITIVES=ON configuration option. See the >S57 driver page for some background. http://www.gdal.org/ogr/drv_s57.html It looks like the attributes will be named TOPI_0 and TOPI_1 and will be integer fields containing the start and end point id I gather. The S57 topology support is a pretty fuzzy in my head. There is also other topological information (I think) accessable on the vector primitive features. Some likely as hard to use list attributes. Best regards, Frank On Fri, Oct 5, 2012 at 11:06 AM, Nikhil Sai Parupalli <[email protected]<mailto:[email protected]>> wrote: Hi All, We are working on project which renders S57 dataset , I used GDAL for rendering GIS data and DOTSPATIAL for displaying map. Here I could read dataset , but can any one know how do we get Topological Indicator value Thanks and Regards Nikhil Sai Parupalli Note: Do not print this email until and unless it is really required. Save paper , stay Green _______________________________________________ gdal-dev mailing list [email protected]<mailto:[email protected]> http://lists.osgeo.org/mailman/listinfo/gdal-dev -- ---------------------------------------+-------------------------------------- I set the clouds in motion - turn up | Frank Warmerdam, [email protected]<mailto:[email protected]> light and sound - activate the windows | http://pobox.com/~warmerdam and watch the world go round - Rush | Geospatial Software Developer
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