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MathGroup Archive 2005

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Re: Re: Map Thread & Inner

  • To: mathgroup at smc.vnet.net
  • Subject: [mg61522] Re: [mg61512] Re: [mg61469] Map Thread & Inner
  • From: "David Park" <djmp at earthlink.net>
  • Date: Fri, 21 Oct 2005 00:38:05 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Chris,

One way I think of MapThread is as follows: If I wanted to use Table but
instead of having values evenly spaced I wanted some odd assortment of
values given by a list, then I really want MapThread.

If I want to combine two lists of equal length, pairwise, to get something
else then I want Inner.

These are probably the most common applications of the two commands.

David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/



From: Chris Chiasson [mailto:chris.chiasson at gmail.com]
To: mathgroup at smc.vnet.net


Matt, to be honest, I don't really understand the details of how
MapThread (or the others) works. I just know that when I see
expressions of a particular structure and I need to transform them,
they might be amendable to certain commands...
I then try a few of them until I get what I want. That is probably not
the best way to go about it, but, eh... o well.


--
Chris Chiasson
http://chrischiasson.com/contact/chris_chiasson



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