Originally posted by: SystemAdmin

[glitter said:]

Hi,

My model does not have any integer variables, but dual and slack values appear as undefined.
When i check the constraints from problem tab i can see the slack and dual values, i think i have a mistake in the writeln part but i cannot solve it.
at the end of model file i write,
execute{
writeln(ct1.slack, "", ct1.dual)
}
and my constraint is
forall(i in Books)
ct1:
number[i]<=order;<br />
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

[alain.chabrier said:]

HI,

In the script part, you may have to write something similar to :

execute {
for (i in Books)
writeln(ct1[i].slack, "", ct1[i].dual)
}

Alain
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

[glitter said:]

thanks very much, it worked...

i have one more question on this, is there a way to write the sensitivity analysis values to Microsoft Access?
#DecisionOptimization
#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

[alain.chabrier said:]

Hi,

What you can do is use some float array to save the dual into it, and then using .dat files export these data to the excel file.

float myduals[Books];

execute {
for (i in Books)
  myDuals[i] = ct1[i].dual;
}

And then use ExcelWrite in .dat to get it written to the Excel file. Look at any Excel data example for this.

Alain
#DecisionOptimization
#OPLusingCPLEXOptimizer