in reply to Re^2: Kronecker Product
in thread Kronecker Product

A nice intro to the concepts of array programming is

Don't feel bad about trial and error; my first go at this (and I have the dubious privilege of being current PDL maintainer) assumed (wrongly) that dupN would be suitable for both sides of the multiplication; furthermore, it took me a little while to figure out inflateN, even though, annoyingly, it is nearly identical to dupN except for swapping the two parts of the slice argument.