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MathGroup Archive 2005

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Re: Function to handle array with variable _number_ of dimensions?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg58519] Re: Function to handle array with variable _number_ of dimensions?
  • From: Paul Abbott <paul at physics.uwa.edu.au>
  • Date: Tue, 5 Jul 2005 04:52:27 -0400 (EDT)
  • Organization: The University of Western Australia
  • References: <dad7t1$36$1@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

In article <dad7t1$36$1 at smc.vnet.net>, Joe Christy <joe at eshu.net> 
wrote:

> I'd like to write a function that takes two integer arguments, P and Q
> say, and then returns a value calculated from the P x P x ... x P (Q
> factors) array, whose entries depend on both P and Q. My first impulse
> is to try and iterate over the array, but I don't see how to generate a
>  non-fixed number of iteration variables.
> 
> Does anyone have a suggestion of a good way to do this, short of writing
> a a distinct variant function for each possible value of Q?

I'm not exactly sure what you are trying to do, but I would have a look 
at Outer and Tuples (in 5.1). Also have a look at the Advanced 
Documentation for these functions in the Help Browser.

Cheers,
Paul

-- 
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