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condrhs
2002 Jan 25
0
Simplex difficulties
...+ f = 14
a + d = 10
b + e = 8
c + f = 7
I've implemented this in R (1.4.0 (2001-12-19), SunOS 5.7) as:
require(boot)
costs = c(8,6,10,9,5,7)
constraints = c(
1,1,1,0,0,0,
0,0,0,1,1,1,
1,0,0,1,0,0,
0,1,0,0,1,0,
0,0,1,0,0,1
)
consmat = matrix(constraints, nrow=5, ncol=6, byrow=T)
consrhs = c(11,14,10,8,7)
simpres = simplex(a=costs, A3=consmat, b3=consrhs, maxi=F)
where I get the error from the simplex function:
Error in simplex1(out1$a[1:(n + m1 + m2)], out1$A[, 1:(n + m1 +
m2)], :
subscript out of bounds
According to Gass (An Illustrated Guide to Linear Programming) the
s...