[Qgis-developer] Displaying vector files

Nathan Woodrow madmanwoo at gmail.com
Wed May 9 06:31:22 PDT 2012

Can I ask why you are reinventing the wheel and no just using the QGIS libs
as a base.

- Nathan

On Wed, May 9, 2012 at 11:29 PM, akshay gupta <akshaygupta202 at gmail.com>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
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