put results in a memory parameter

[Nozhan Hosseini]

Hello every one , i have a question

IN a loop i started getting results from my beginning part of codes

I want to collect these results to a vector or parameter or set and then compare these new parameters and do stuff

precisely i can say i want to put this sum in a vector or matrix


sum{i in ITEMS} VALUE[i] * choice[i]      :=       X

but i got error every time

in general how i can put a value coming from a loop to a matrix each time loop execute ?

[victor.z...@gmail.com]

The result of the sum expression from your example is a scalar so you don't need a vector or a matrix. You can store it in a parameter using the let statement:

  param p;

  let p := sum{i in ITEMS} VALUE[i] * choice[i];

HTH,

Victor

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[Nozhan Hosseini]

:(
syntax error

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[Robert Fourer]

To get some help with this error, you will need to post the complete error message. It will also help if you can post the AMPL definitions that you are currently using for ITEMS, VALUE, and choice.

Bob Fourer
am...@googlegroups.com

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From: am...@googlegroups.com [mailto:am...@googlegroups.com] On Behalf Of Nozhan Hosseini
Sent: Saturday, April 18, 2015 11:37 AM
To: am...@googlegroups.com
Subject: Re: [AMPL 10308] put results in a memory parameter

:(
syntax error

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