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.
# NOT RUN {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)
# }