i am fiddling arround with a set of moon elevation data. the data acquisition resulted in longitudinal (pole to pole) rows of high density xyz-readings.
after loading part of this dataset in gm the resulting presentation (orthographic projection) shows very well the main structures (see attachment). however i am puzzled about the scattered radial irregularites which seam to display much of the data acquisition pattern rather than a smooth surface i would expect given the high data density.
is that possibly due to the built in gridding algorithms? grateful for some ideas?