Re: [Help-glpk] How can I define bounds for a two dimensional variable easily?

[glpk xypron]

Hello Toni,

set P;
set T;
param ub{P};
var v{p in P, t in T}, <= ub[p];
maximize obj : sum{p in P, t in T} v[p,t];
solve;
display v;
data;
set P := power1, power2, power3;
set T := January, February, March;
param ub :=
  [power1] 197
  [power2] 217
  [power3] 304;
end;

Please, read glpk-4.47/doc/glpk.pdf available in the source distribution of 
GLPK at
ftp://ftp.gnu.org/gnu/glpk/glpk-4.47.tar.gz

Best regards

Xypron

-------- Original-Nachricht --------
> Datum: Tue, 24 Jan 2012 09:42:09 -0800 (PST)
> Betreff: [Help-glpk] How can I define bounds for a two dimensional variable 
> easily?

> 
> Hi there,
> 
> i just recently startet to get used to GLPK and right now I can't find
> help
> in the wikibooks or manuals, so I try it here.
> 
> I want to define constraints (especially upper bounds) for a two
> dimensional
> variable. In my case, the Variable is like that:
>                power1       power2       power3  ....
> january
> february
> ...
> 
> The specialty about this is the easy form of  the constraint: one column
> its
> always the same number. Like that:
> 
>                power1       power2       power3  ....
> january     c1              c2             c3
> february    c1              c2             c3
> ...
> 
> Is there an easy way to declare such a constraint in one line, or do I
> really have to make a table with an entry for each row and column?
> 
> Thx,
> Raketenschnitzel
> -- 
> View this message in context:
> http://old.nabble.com/How-can-I-define-bounds-for-a-two-dimensional-variable-easily--tp33196373p33196373.html
> Sent from the Gnu - GLPK - Help mailing list archive at Nabble.com.

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