Subsampling on axis

[APOS80]

It would be nice to subsample by length on axis.

I use it for pointclouds thats from areal photos of the ground so the hight is on Z axis.
It would help to subsample with 0,5 on X/Y axis and 0,1 on Z axis.

[daniel]

Ah, that would make the algorithm much more complicated... well, a totally different algorithm actually.

[JacekJaskolski]

You could try a workaround:

1. scale the pointcloud along the Z axis only: x(1.0) y(1.0) z(5.0)
2. apply subsampling (0.5)
3. scale the cloud back: x(1.0) y(1.0) z(0.2)

This should give you a point cloud with 5 times higher density in Z than in XY

[daniel]

Ah, nice trick!