Re: [Qlandkartegt-users] Feature request: DEM profile interpolation

2017-07-25 Thread Guido Scholz
Am Mon, 24. Jul 2017 um 21:28:42 +0200 schrieb Oliver Eichler: Hi Oliver, > There is no chance for an algorithm to know what points to use for the linear > interpolation interval. Without knowing the properties of the terrain, > knowing > that there is a valley floor, that point A and B are

Re: [Qlandkartegt-users] Feature request: DEM profile interpolation

2017-07-24 Thread Oliver Eichler
There is no chance for an algorithm to know what points to use for the linear interpolation interval. Without knowing the properties of the terrain, knowing that there is a valley floor, that point A and B are good ones and that the terrain can be represented by a line, it's impossible to

Re: [Qlandkartegt-users] Feature request: DEM profile interpolation

2017-07-24 Thread Guido Scholz
Am Mon, 24. Jul 2017 um 20:30:08 +0200 schrieb Oliver Eichler: > Hi Guido, Hi Oliver, > I do not understand why the elevation filter "Interpolate Elevation Data" > with > setting "coars" does not fit your need. The used spline interpolation is much > more natural than a linear interpolation.

Re: [Qlandkartegt-users] Feature request: DEM profile interpolation

2017-07-24 Thread Oliver Eichler
Hi Guido, I do not understand why the elevation filter "Interpolate Elevation Data" with setting "coars" does not fit your need. The used spline interpolation is much more natural than a linear interpolation. But either linear or spline interpolation will not provide good results if your