Initializing help system before first use

getpresolvebasis

Purpose
Returns the current basis from memory into the user's data areas.
If the problem is presolved, the presolved basis will be returned. Otherwise the original basis will be returned.
Synopsis
getpresolvebasis(prob, rowstat = TRUE, colstat = TRUE)
Arguments
prob 
The current problem.
rowstat 
Flag to indicate whether the output list should contain rowstat.
colstat 
Flag to indicate whether the output list should contain colstat.
Return value
A list with the following elements:
rowstat
Basis status of the stack, surplus or artificial variable associated with each row. The status will be one of:
0
slack, surplus or artificial is non-basic at lower bound;
May be NULL if not required.
1
slack, surplus or artificial is basic;
2
slack or surplus is non-basic at upper bound.
colstat
The basis status of the columns in the constraint matrix. The status will be one of:
0
variable is non-basic at lower bound, or superbasic at zero if the variable has no lower bound;
May be NULL if not required.
1
variable is basic;
2
variable is at upper bound;
3
variable is super-basic.
Further information
Please refer to the C documentation for more details.

Parent Topic R interface reference manual

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