Dear list
after quite a bit of research in the archive, I gave up. This seems to be a simple problem:
I would like to aggregate a (3-dimensional) array, either by another array, or by a vector, indicating the dimension which should be aggregated.
I don't think I have to provide an example, it's really the 3-dimensional equivalent for the standard aggregate command. I am sure aggregate() itself can do it, but how do I need to specify the 'by' argument?
Any hint (also to an earlier post) appreciated
Sebastian