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problem.addmipsol

problem.addmipsol

Purpose
Adds a new feasible, infeasible or partial MIP solution for the problem to the Optimizer.
Synopsis
problem.addmipsol(mipsolval, mipsolcol, solname)
Arguments
mipsolval 
Array containing solution values.
mipsolcol 
Optional integer array containing the columns (i.e. xpress.var objects, indices, or names) for the solution values provided in mipsolval. It is optional when the length of mipsolval is equal to COLS, in which case it is assumed that mipsolval provides a complete solution vector.
solname 
An optional name to associate with the solution.
Further information
1. The function returns immediately after passing the solution to the Optimizer. The solution is placed in a pool until the Optimizer is able to analyze the solution during a MIP solve.
2. If the provided solution is found to be infeasible, a limited local search heuristic will be run in an attempt to find a close feasible integer solution.
3. If a partial solution is provided, global columns will be fixed to any provided values and a limited local search will be run in an attempt to find integer feasible values for the remaining unspecified columns. Values provided for continuous column in partial solutions are currently ignored.
4. The problem.addcbusersolnotify callback function can be used to discover the outcome of a loaded solution. The optional name provided as solname will be returned in the callback function.
5. If one or more solutions are loaded during the problem.addcboptnode callback, the Optimizer will process all loaded solutions and fire the callback again. This will be repeated as long as new solutions are loaded during the callback.
Related topics
problem.addcbusersolnotify, problem.addcboptnode.

Parent Topic Reference Manual

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