On Mon, Aug 11, 2008 at 6:46 PM, Clay, Bruce <[EMAIL PROTECTED]> wrote: > Does anyone know of a function in GDAL or related libraries that given a set > of points it will return a new set of points that is or can be used to > create a smoothed polyline? I have heard about things like linear fit and > least squares but I have not used them and I am quite rusty on the math used > to calculate a smoothed line from a set of points. I have done a lot of web > searching and found various generic algorithms but I don't see how to apply > them. For example a linear regression sample takes in a set of X-Y points > but it only returns 3 values of C and standard deviation.
In the old v.digit of GRASS was a spline based curve smoother: http://trac.osgeo.org/grass/browser/grass/branches/releasebranch_5_0/src/mapdev/v.digit/spline.c Maybe interesting to look at. Markus _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
