Iterators, again
- To: mathgroup at smc.vnet.net
- Subject: [mg20406] Iterators, again
- From: Eric Spahr <rspahr at worldnet.att.net>
- Date: Tue, 26 Oct 1999 00:32:57 -0400
- Sender: owner-wri-mathgroup at wolfram.com
I am trying to build a matrix:
Array[MyArray, {jtop,jtop}] // Array[f, {m,n}]
where jtop = some number;
m = 1...jtop;
n = 1...jtop;
itop = some number;
and I want to
Sum[(something[[m]][[i]])(something[[n]][[i]]),
{i, 1, itop}]for it, thus:
Array[MyArray =
Sum[(something[[m]][[i]])(somethingElse[[n]][[i]]),
{i, 1, itop}],{jtop,jtop}].
In other words, I want to iterate through inner n with m
= 1, then through outer m with n iterating again. (and,
of course, i iterating 1 -> itop each time.
This doesn't seem to be able to pick up the part
specifications.
though it does build the appropriately sized matrix.
Nested For[]'s don't seem to work either.
Thanks in advance.