Hey everyone,
I'm having a Problem with the summation of a part of a set. After reading numerous threads and the GAMS guide I still can't find the cause of the code not working.
Code:
alias (m,n);
Positive variables
AI(p,m) quantity sold
Q(p,m) quanitity produced
Equations
AMP(p,m)
Restriction:
AMP(p,m).. sum(n$(ord(m) LE n),(Q(p,m))) =G= sum(n$(ord(m) LE n), AI(p,m));
->This restriction is supposed to make sure that there cannot be sold more products than produced until the period.
I get Errors 135 (Incompatibel operands) and 148 (Dimension different) for both sides of this equation but i juzst cant figure out why.
Is there somebody who knows what to change?
Thanks in advance!
Problem with conditional summation
Re: Problem with conditional summation
You managed to use ord for m, now you just need to do the same for n:
-Michael
Code: Select all
AMP(p,m).. sum(n$(ord(m) LE ord(n)),(Q(p,m))) =G= sum(n$(ord(m) LE (ord(n)), AI(p,m));
Re: Problem with conditional summation
It's working! Thank you very much!