[Qgis-developer] [gdal-dev] Open source API to convert raster
b.rowlingson at lancaster.ac.uk
Thu Jan 10 07:30:23 EST 2008
Ricardo Scachetti Pereira wrote:
> What I really need is some API or software library (preferably in C
> or C++) that I could use to convert ESRI Arc/Info Grids (the binary
> kind) to a Shapefile of polygons. If a library isn't available, a
> command line utility that I can call from C/C++ would suffice.
There's some raster-to-vector conversion tools, but I don't know any
that produce shapefiles. However, if the output is in a sensible enough
format then it should be easy to convert from that to shapefile.
and see if they can successfully trace your rasters.
Mostly these tools will smooth out the jagged edges of raster areas -
is this what you want, or do you want your shapefiles to strictly follow
the raster cell boundaries? That's a different problem altogether, and
probably more easy to do...
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