I am having some difficulty with MathProg syntax with regards to
logical operators and sets. Basically, I am making a big set, C, that
is a set of 2-tuples, where each 2-tuple consists of an element from
sets A and B. I can do this for every combination of elements in A and
B using setof, but
It is not necessary to rely on glpk for all your printing needs. You
could pipe the output through gawk. Linux and DOS both provide sort
utilities.
- Original Message -
From: Jeffrey Kantor
To: xypron
Cc: Help-glpk@gnu.org
Subject: Re: [Help-glpk] Mathprog question
Date: Sat
Hi all --
I'm struggling to come up with a way to print a list ordered by the value of
a solved variable. I have
var start{TASKS};
solve;
and now I'd like to print the tasks ordered by the value of the start
variables. Perhaps I'm just not thinking
clearly, but is there a simple way to do
Hello Jeffrey,
see example below. Unfortunately sorted output requires O(n^3) time.
Best regards
Xypron
set I;
param a{I} := Uniform01();
var x{I};
s.t. c{i in I}:
a[i] = x[i];
solve;
printf unsorted\n;
for{i in I}
printf %10s: %f\n, i, x[i];
printf decreasing order\n;
for{i in
I am in awe ... thank you, precisely what I needed.
Jeff
On Sat, Dec 12, 2009 at 3:57 PM, xypron xypron.g...@gmx.de wrote:
Hello Jeffrey,
see example below. Unfortunately sorted output requires O(n^3) time.
Best regards
Xypron
set I;
param a{I} := Uniform01();
var x{I};
s.t. c{i
Datum: Sat, 12 Dec 2009 12:57:22 -0800 (PST)
Von: xypron
An: Help-glpk@gnu.org
Betreff: Re: [Help-glpk] Mathprog question
Hello Jeffrey,
see example below. Unfortunately sorted output requires O(n^3) time.
Best regards
Xypron
set I;
param a{I} := Uniform01();
var x{I};
s.t. c{i in I
see example below. Unfortunately sorted output requires O(n^3) time.
Below here is a simplified Xypron's version. It works if all a[i]'s
are different.
set I;
param a{I} := Uniform01();
printf{k in 1..card(I), i in I:
sum{j in I} (if a[i] = a[j] then 1) == k}
%-10s %f8.6\n, i, a[i];
Hi Xypron,
currently in GMPL there is no way to retrieve an element of a
symbolic set by a logical condition. In the example below
I am able to sort the values x{I}, but I am unable to
output the indices sorted by the values.
One way to add such a functionality would be functions
Max{
