AMPL Modeling Language

This is a discussion and help group for AMPL, an algebraic modeling language for optimization problems of many kinds.  AMPL lets people use common notation and familiar concepts to formulate models and examine solutions, while the computer manages communication with appropriate solvers.

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Showing 1-20 of 4821 topics
objective as a variable (AMPL book example: Figure 17-9 minmax.mod) 1:23 PM
Parameter subscripted by other parameter BVG 7/26/17
Error executing "solve" command: error processing objective Total_Cost: can't convert 'c1' to a number. Sameer Ali 7/26/17
CPLEX gives error on solve command Michele Urbani 7/25/17
MOSEK doesn't find optimal solution for convex problem simon_onair 7/25/17
can't run ampl 7/25/17
Feasible solution opens arcs which have no flow over them BVG 7/25/17
Run with multiple data files stops after three runs 7/25/17
A question about solver BARON 7/24/17
AMPL IDE does not work with cplex niuys 7/24/17
Error in connecting AMPL to MATLAB mahraz amini 7/24/17
display "no value" error for computed parameter Chaimaa ESSAYEH 7/22/17
How to connect Cplex with Matlab Alessandro Oscar Gilardino Arias 7/22/17
same model, larger data, no result 7/22/17
Using AMPL in SIMULINK mahraz amini 7/22/17
Running AMPL with SNOPT: can't evaluate acos'(-1). Bug: "scream" called. Cuicui Chen 7/21/17
Disable CPLEX presolve in AMPL Luca Mencarelli 7/21/17
AMPL IDE does not work for cplex niuys 7/21/17
Help in summation 7/21/17
"range too large" error 7/21/17
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