Initializing help system before first use

setindicators

Purpose
Specifies that a set of rows in the matrix will be treated as indicator constraints during a tree search.
An indicator constraint is made of a condition and a constraint. The condition is of the type "bin = value", where bin is a binary variable and value is either 0 or 1. The constraint is any matrix row (may be linear, quadratic or general nonlinear). During tree search, a row configured as an indicator constraint is enforced only when condition holds, that is only if the indicator variable bin has the specified value. Note that every row may only get assigned a single indicator variable and term. If a row needs to be activated by multiple different terms, the row needs to be duplicated so that each term can be assigned to a distinct row. If the indicator variable should be changed, the old term needs to be deleted first (by calling delindicators or by calling this function with a comps argument of 0) before assigning a new one.
Synopsis
setindicators(
prob,
rowind,
colind,
complement,
nrows = x_max_vec_length(rowind, colind, complement)
)
Arguments
prob 
The current problem.
rowind 
Integer array of length nrows containing the indices of the rows that define the constraint part for the indicator constraints.
colind 
Integer array of length nrows containing the column indices of the indicator variables.
complement 
Integer array of length nrows with the complement flags:
0
not an indicator constraint (in this case the corresponding entry in the colind array is ignored);
1
for indicator constraints with condition " bin = 1";
-1
for indicator constraints with condition " bin = 0".
nrows 
The number of indicator constraints.
Return value
The input argument prob.
Further information
Please refer to the C documentation for more details.

Parent Topic R interface reference manual

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