Procedure GMP::Column::SetTypeRaw(GMP, colSet, type)

GMP::Column::SetTypeRaw

The procedure GMP::Column::SetTypeRaw changes the types of a group of columns in a generated mathematical program.

GMP::Column::SetTypeRaw(
     GMP,            ! (input) a generated mathematical program
     colSet,         ! (input) a subset of Integers
     type            ! (input) an element parameter in AllColumnTypes
     )

Arguments

GMP

An element in AllGeneratedMathematicalPrograms.

colSet

A subset of the set Integers, representing a set of column numbers.

type

An element parameter in AllColumnTypes, defined over colSet.

Return Value

The procedure returns 1 on success, or 0 otherwise.

Example

Assume that ‘MP’ is a mathematical program. To use GMP::Column::FreezeRaw we declare the following identifiers (in ams format):

ElementParameter myGMP {
    Range: AllGeneratedMathematicalPrograms;
}
Set VariableSet {
    SubsetOf: AllVariables;
}
Set ColumnSet {
    SubsetOf: Integers;
    Index: cc;
}
ElementParameter ColType {
    IndexDomain: cc;
    Range: AllColumnTypes;
}

To change integer variable x(i) into a continuous variable we can use:

myGMP := GMP::Instance::Generate( MP );

VariableSet := { 'x' };
ColumnSet := GMP::Instance::GetColumnNumbers( myGMP, VariableSet );

ColType(cc) := 'continuous';

GMP::Column::FreezeRaw( myGMP, ColumnSet, ColType );

See also

The functions GMP::Instance::Generate, GMP::Instance::GetColumnNumbers, GMP::Column::GetType and GMP::Column::SetType.