[Gdal-dev] How to read geotiff file using GDAL

[Matt Wilkie]

> How can I read geotiff file format using GDAL  

This is described in the GDAL API Tutorial here:
http://www.gdal.org/gdal_tutorial.html

 > and can I convert them to shapfile format ???

This is generally not possible as geotiff (raster) and shape (vectors) 
are entirely different data structures. The method Frank mentioned for 
generating contours from elevation data is here:
http://trac.osgeo.org/gdal/browser/trunk/gdal/apps/gdal_contour.cpp
For more general info on Raster to Vector conversion see 
http://en.wikipedia.org/wiki/Raster_to_vector


cheers,

matt wilkie
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