[Coin-discuss] "empty" LP's in OsiCpx

[Stefan Vigerske]

Hi,

I've a "problem" with the CPLEX-interface:

OsiCpxSolverInterface::loadProblem, line 2169:
  if( nr == 0 || nc == 0 ) {
    // empty LP? -> kill old LP
    gutsOfDestructor();
    return;
  }

Why is an LP assumed to be empty, if it contains no rows?
Why can't I minimize a linear function just regarding box constraints?

Shouldn't it be just "if (nc==0) ..."?

I "solved" this problem by adding an empty row.

Greetings,
Stefan

-- 
Stefan Vigerske				Student assistant
Humboldt University Berlin		Numerical Mathematics