[GRASS-dev] about simple feature/ogr direct processing

[G. Allegri]

Citing from http://download.osgeo.org/grass/grass7_progman/vectorlib.html#vlibTopoManagement

"Topology is written for native format while pseudo-topology is
written for OGR sources, SHAPE-link."

Please, forgive me, but I would like to clarify some points more.

1 - v.external links to data without topology buing built. At the
moment it's only useful for visualizing (but could it be used for SF
algorithms?)
2 - OGR data sources use "pseudo-topology". Does this refer to the
read/write directly accessed sources? Or is it general? What is the
main difference between pseudo- and real- topology?

thanks again,
giovanni



2010/4/6 Martin Landa <landa.martin at gmail.com>:
> [back to ML]
>
> Hi,
>
> 2010/4/6 G. Allegri <giohappy at gmail.com>:
>> So it's not meant to be used for ogc simple featurer processing (like
>> in qgis or saga). The topo build step is required for processing. I
>> thought it was an option to permit the development/use of
>> not-topological algorithms...
>
> it's question for discussion, currently no SF processing implemented
> in GRASS AFAIK.
>
> Martin
>
> --
> Martin Landa <landa.martin gmail.com> * http://gama.fsv.cvut.cz/~landa
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