r-help,

I'm currently using 'lp.transport' from 'lpSolve' to solve a transportation 
problem. However, I've experienced some performence issues, and have been told 
that other solvers may perform better. I've looked briefly at 'Rsymphony' and 
'rglpk', but I can't seem to figure out how/if they solve transportation 
problems...

So, is there an 'Rsymphony' and/or 'rglpk' equivalent to:

 library(lpSolve)
 x <- matrix(c(.91,.32,.86,.14,.59,.36,.67,.34,.87,.56,.10,.09),ncol=3,byrow=T)
 lp.transport(x, "min" , rep("==",4) , rep(1,4) , rep(">=",3) , rep(1,3) 
)$solution

...and, if so, does in generally outperform 'lp.transport'? And if not, are 
there any other R packages that solve transportation problems more efficient 
than 'lpSolve'?

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