R: Get Column

get.column {lpSolveAPI}

R Documentation

Get Column

Description

Retrieve a column from an lpSolve linear program model object.

Usage

get.column(lprec, column)

Arguments

`lprec`	an lpSolve linear program model object.
`column`	a single numeric value from the set `{1, ..., n}` (where `n` is the number of decision variables in `lprec`) specifying which column to retrieve.

Value

a list with elements column and nzrow such that column[i] contains the constraint coefficient in row nzrow[i]. Rows not present in nzrow have coefficient zero in column.

Author(s)

Kjell Konis kjell.konis@me.com

References

http://lpsolve.sourceforge.net/5.5/index.htm

Examples

lps.model <- make.lp(4, 0)

x <- c(6,2,4,9)
add.column(lps.model, x)

y <- c(3,1,5)
ind <- c(1,2,4)
add.column(lps.model, y, ind)

get.column(lps.model, 2)

[Package lpSolveAPI version 5.5.2.0-17.7 Index]