# NOT RUN {
## example of Steinhauser, Langbehn and Peters (1992)
# }
# NOT RUN {
library( linprog )
# }
# NOT RUN {
## Production activities
cvec <- c(1800, 600, 600)  # gross margins
names(cvec) <- c("Milk","Bulls","Pigs")
## Constraints (quasi-fix factors)
bvec <- c(40, 90, 2500)  # endowment
names(bvec) <- c("Land","Stable","Labor")
## Needs of Production activities
Amat <- rbind( c(  0.7,   0.35,   0 ),
               c(  1.5,   1,      3 ),
               c( 50,    12.5,   20 ) )
## Maximize the gross margin
res <- solveLP( cvec, bvec, Amat, TRUE )
## print the results
print( res )
# }
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