Here is what I’m trying to achieve:
When plotting land classes on a map one often needs a pattern to fill a certain area. Therefore I need to place symbols (tufts of gras, sand dunes, trees, …) in an pseudo-random pattern where the distance between neighbouring points is not smaller than j (to avoid overlapping symbols) but also not larger than k (to comply with the specification I have to follow).
I try to avoid using raster graphics (
-Gp) for this as the resolution is too low and I need the flexibility custom symbols offer e.g. sand dunes need to be oriented to the prevailing wind direction.
My plan is to generate a set of coordinates which I can use to place my symbols and then use a mask to have it only visible where I need it. My problem: How do I generate such a set of coordinates which cover the whole plot while obeying the constraints j & k?
Do you have a good starting point for me?