Re: [mkgmap-dev] DEM: performance with bicubic interpolation

Hi Gerd, there are different kind of bicubic interpolations. I'm not good at this math, I think the previous version was actually bicubic spline interpolation. See other possibilities here: http://mrl.nyu.edu/~perlin/cubic/Cubic_java.html I don't know, which type of spline or cubic interpolation is best for DEM. Maybe differences aren't big, but I think it is better to have good interpolation than fast one. You compile a map once but then many people can use it. It shouldn't be difficult to include an option like: --dem-interp=.. -- Best regards, Andrzej