And if you are thinking of manually tracing over a raster image you just need the tools on the "digitisation" and "advanced digitisation" toolbars. There is help on these in the user manual.
> Date: Wed, 2 Nov 2011 16:52:49 -0700 > From: Mars <marsofea...@gmail.com> > Subject: Re: [Qgis-user] How to Degitize a raster immage > To: Mumtaz Lakho <lakho.mum...@yahoo.com> > Cc: QGIS-Users <qgis-user@lists.osgeo.org> > Message-ID: <9293d6af-3204-49f6-bf99-b7d2d7889...@gmail.com> > Content-Type: text/plain; charset="us-ascii" > > Besides Geo-Referencing a Raster image, there is also a function called > "Feature Extraction". I Believe there is a plugin for extracting Vector > Features from a DEM and possibly other functions to extract features from other > types of Rasters. Perhaps if Geo-referencing is not your primary goal you can > research feature extraction to give you some background. > > Sent from my iPhone > > On 2011-11-02, at 12:57 PM, Mumtaz Lakho <lakho.mum...@yahoo.com> wrote: > > > Dear QGIS Repr. > > Would u please guide me the process of Digitizationof raster layer under > QGIS 1.7.1- wroclaw > > thanks > > (Mumtaz) > > a QGIS User _______________________________________________ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
