On 1/14/2010 10:16 AM, Torben Dannhauer wrote: > Hi, > is it possible to specifiy my polygon outline position and elevation, and > GDAL rasterize code will interpolate correctly that this area is really > flattend?
I'm not really sure what you're asking. > or does it lift up/sink sown all coordinates inside the polygon to the > specified value? This is what it does. You specify the BURN_VALUE_FROM_Z option and it no longer uses a constant value for a fill, rather it uses the Z value from the polyline/polygon. In the case of the polygon, it uses the value from the first vertex since interpolating non-constant values across a polygon interior is computationally messy. In the case of a polyline, it can use varying Z values from each vertex, interpolated linearly. It doesn't do any blending into the surrounding areas. That's the higher-level functionality that my library adds. > How can I access the new API if now available via rasterize? Look at the GDAL rasterize API in the latest GDAL subversion checkout. I think GDAL 1.7 will have the new feature once it's released publicly. > Thank you, > Torben -- Chris 'Xenon' Hanson, omo sanza lettere Xenon AlphaPixel.com PixelSense Landsat processing now available! http://www.alphapixel.com/demos/ "There is no Truth. There is only Perception. To Perceive is to Exist." - Xen _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
