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Re: [Help-glpk] The question about the sequence of column(About lpk_get_
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From: |
Andrew Makhorin |
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Subject: |
Re: [Help-glpk] The question about the sequence of column(About lpk_get_col_prim) |
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Date: |
Thu, 10 Aug 2006 12:19:38 +0400 |
> So I am wondering how GLPK generate sequence of
> columns(variables).
Variables are generated "by need", i.e. when they are actually
referenced in constraints, so the order of variables in LPX object
is unpredictable.
> In
> this case, suppose I don't how sequence of X is generated, how I can
> retrieve
> value for X.
Use api routine lpx_find_col to determine ordinal number of a variable
by its name. For more details see
http://lists.gnu.org/archive/html/help-glpk/2006-07/msg00012.html