[gdal-dev] Topological pointer

[Frank Warmerdam]

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 <
nikhil.parupalli at iictechnologies.com> 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
>
>
>
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