Hi,
I am working with lpSolve "R" package by Sam Buttrey, [EMAIL PROTECTED] ,
which is interface to lp_solve linear/integer programming system.
You can find information about lp_solve at http://groups.yahoo.com/group/lp_solve/
(free registration required).
lpSolve (R package) supports linear and integer programming but it does not support
semi-continuous variables
and Special Ordered Sets (SOS) which are supported by lp_solve .
I would like to know if there is a way to use semi-continuous variables in lpSolve ?
Does someone know how?
Best regards,
Igor Yarmulnik [EMAIL PROTECTED]
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