Uri Guttman wrote:
i can't spit out the syntax but here is the conceptual way i would do
it. we do have multidimensional slices so we could grab each slice
(maybe with zip?) and pass that to [+] and then grab the list of results
back into a array/matrix with one less dimension than the original.
Yu
Is there a way to target hyperoperators at different axes of a
multi-dimensional array? This is an attractive feature of
various APL-like languages, viz. e.g. in J:
a =. 2 5 $ i. 7 - a simple 2-by-5 array
a
0 1 2 3 4 - like this
5 6 0 1 2
+/"1 a - sum reduc
