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MathGroup Archive 2005

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What's the matter with this?

  • To: mathgroup at
  • Subject: [mg56109] What's the matter with this?
  • From: Steve Gray <stevebg at>
  • Date: Fri, 15 Apr 2005 04:48:29 -0400 (EDT)
  • Sender: owner-wri-mathgroup at

I have a list

intertemp[[1]] = {{14, 17, {0.7929, 0.4366}, {2.8146, 11.3986}}

and a simple function

modxx[axx_] := axx[[2]] = Mod[axx[[2]], 14, 1];

When I do modxx[intertemp[[1]]] I get this:

Set::setps: {14, 17, {0.792902, <<19>>}, {2.81469, 11.3986}}
	 in assignment of part is not a symbol.

What does this mean and how can I do it correctly?
I must be making a very simple error.
I want the 17 to become 3 with no other changes.

Thank you

Steve Gray

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