Initializing help system before first use

getdirs

Purpose
Used to return the directives that have been loaded into a matrix.
Priorities, forced branching directions and pseudo costs can be returned. If called after presolve, getdirs will get the directives for the presolved problem.
Synopsis
getdirs(prob)
Argument
prob 
The current problem.
Return value
A list with the following elements:
ndir
The number of directives.
indices
Integer array of length ndir containing the column numbers ( 0, 1, 2,...) or negative values corresponding to special ordered sets (the first set numbered -1, the second numbered -2,...).
prios
Integer array of length ndir containing the priorities for the columns and sets, where columns/sets with smallest priority will be branched on first.
branchdirs
Character array of length ndir containing the branching direction for each column or set:
U
the entity is to be forced up;
D
the entity is to be forced down;
N
not specified.
uppseudo
Double array of length ndir containing the up pseudo costs for the columns and sets.
downpseudo
Double array of length ndir containing the down pseudo costs for the columns and sets.
Further information
Please refer to the C documentation for more details.

Parent Topic R interface reference manual

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