Re: [ojAlgo-user] Connect variable names in MPS file with Optimisation.Result values

[Anders P. <an...@op...>]

This is now fixed.

https://code.google.com/p/ojalgo/wiki/UsingMPS



> On 27 feb 2013, at 21:52, Anders Peterson <an...@op...> wrote:
> 
> I asume you call maximise() or minimise() directly on the MathProgSysModel... and, yes that wont work well. The solution is not written back to the columns.
> 
> MathProgSysModel tmpMPSM = MathProgSysModel.makeFromFile(...);
> ExpressionsBasedModel tmpEBM = ExpressionsBasedModel.make(tmpMPSM);
> State tmpState = tmpEBM.minimise().getState();
> List<Variable> tmpVariables = tmpEBM.getVariables();
> 
> The variables have names and the solution values are written back to them.
> 
> Suppose there should be code that writes those solution values to the columns of the MathProgSysModel. Until someone writes that code you have to do as described above.
> 
> /Anders
> 
> 
> On 27 feb 2013, at 19:00, "Steffen Borgwardt" <bor...@ma...> wrote:
> 
>> Hello!
>> 
>> I'm solving a linear program using ojalgo. To do so, i write an MPS file
>> and call 'MathProgSysModel.makeFromFile'. The solving process works just
>> fine, but in the 'Optimisation.Result' i cannot tell which value is
>> associated to which variable. Their order is not preserved, so i cannot
>> simply iterate over the 'or.doubleValues'.
>> 
>> How do i connect variable names with the solution?
>> 
>> Thanks for a reply!
>> 
>> Best
>> Steffen
>> 
>> 
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