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[Help-glpk] Re: " No value error " in MatProg Glpk 4.7

From: Andrew Makhorin
Subject: [Help-glpk] Re: " No value error " in MatProg Glpk 4.7
Date: Sat, 11 Sep 2004 12:18:58 +0400

>I am using MathProg in Glpk 4.7 to write/formulate a LP model. It seems
>that the MathProg in glpk 4.7 will not handle properly the dot (.) for
>blank value in my data file. The LP problem is a blending problem and
>(.) data or no value is a part of a recovery figures when a material is
>cut and produces various intermediate products. When I replaced the (.)
>with figure/number, the model is formulated. I check this by writing
>--wcpxlp and --wglpt files for the model.

Probably you did not specify 'default' attribute, so referencing to
missing data causes the error.

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