[Qgis-user] Basics about vector data

[Tyler Mitchell]

On 2012-12-16, at 5:11 AM, chathura silva wrote:
> I would like to know some approaches or algorithms that are used in vector data generation from raster images .

On 2012-12-16, at 5:11 AM, chathura silva wrote:
> I would like to know some approaches or algorithms that are used in vector data generation from raster images .


If you want to look at some source code, I suggest:
https://github.com/OSGeo/gdal/tree/trunk/gdal/apps

In particular the gdal_contour and 

https://github.com/OSGeo/gdal/tree/trunk/gdal/swig/python/scripts

gdal_polygonize.py

Hope that helps,
Tyler


-----
Tyler Mitchell, Publisher
Locate Press, info at locatepress.com
Open Source Geospatial Desktop book now available!




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