[gdal-dev] Displaying vector files

[Jean-Claude Repetto]

On 05/06/12 09:40, akshay gupta wrote:
> Hi all,
>
> I am writing an application to load vector maps/shape files using
> gdal/ogr and display them onto a gui designed using Qt. I am  new to
> dealing with vector files, I am not able to decide how to render them on
> GUI. Few approaches that come to my mind are:
> - To convert vector files to raster and display them as raster..
> - To draw each shape in vector file one by one (i dont know how to do
> this, I dont even know whether it would be even  possible this using
> GDAL/OGR, or how complex this would be because in my case vector files
> can be very complex)
>
> The decision how to render vector files is very important for me,
> because after displaying vector files i need to support some advanced
> features like projection change, interactive selection, Geo-referencing etc.
>
> Can any one who has worked on vector/gis stuff, tell me how this is
> usually done and what Qt widget is used for displaying such data.
>
> Thanks,
> Akshay gupta


Hello,

You should have a look at the QGIS project : www.qgis.org
It displays vector data using GDAL/OGR and Qt, that's exactly what you 
want to do.

Jean-Claude