Error: Real number expected

GAMS
1

Hi all,

I have a problem that I do not understand why it occurs. I specify the following options

Option optcr =  option_relativeGap;
Option optca = option_absoluteGap;
Option Reslim = option_timeLimit;

and I get an error: Ral number expected

I read the parameters (option_relativeGap, option_absoluteGap, option_timeLimit) from a GDX file where they are displayed in a correct way.

option_relativeGap
$LOAD option_relativeGap

option_absoluteGap
$LOAD option_absoluteGap

option_timeLimit
$LOAD option_timeLimit

The values are real numbers. Does anyone have a clue what the problem is? I would be quite thanful.

2

Hi

I assume that you use the options in your model file and not in a separate opt-file.
You should then write these options like:

mymodel.optcr = option_relativeGap;

where mymodel is the model name of the model you are trying to solve.


Hope this helps;
Cheers
Renger

3

Thanks Renger for your help. This was indeed the problem.