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From: | Marc Goetschalckx |
Subject: | [Help-glpk] Different constraint for first element of a set than for other elements |
Date: | Mon, 01 Feb 2010 18:22:42 -0500 |
User-agent: | Thunderbird 2.0.0.23 (Windows/20090812) |
The model has a different constraint for the first
element of a set (say PERIODS) than for all remaining elements. I have defined three sets: INITIAL_PERIOD; OTHER_PERIODS; PERIODS := INITIAL_PERIOD union OTHER_PERIODS; when MathProg is generating the model and specifically constraints over the PERIODS set it terminates with the following error cannot convert JAN to floating-point number where JAN is the first period in OTHER_PERIODS How should the model be written in MathProg to allow different constraints for the first element. Thanks |
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