I have a few thousand points measured with totalstation from an archaeological site. The points are measured quite unevenly which makes TIN triangulation and subsequent DEM generation a mess. Some areas has a lot of tightly measured points, others almost none.
I have created a 1m2 grid overlaying the points containing XYZ.
What I would like to achieve: Display one point for each 1m2 and that this one is the one with the lowest Z elevation value.
PS: Yes, the Z-values are negative, because the excavation was conducted on old seabed.