http to https

and port from 3332 to 3333

not sure how to do this?

]]>unfortunately, you cannot use division directly in an objective function or constraint. Please see pages 33-34 in the manual.

An indirect way for parameters (e.g. a) is to assign a new parameter with the the reciprocal (eg. b:=1/a) within the parameters section. The new parameter can be multiplied in the objective function or a constraint.

If you want do divide a variable then it is a little bit more complicated. If you give me an impression for what exactly you want to use a division in this way I could give you some hints.

Thanks,

Mike

]]>I am having a little trouble using the CBC solver with GMPL. When I try choosing that solver it doesnt seem to recognise what is the model or data file. Can you let me know what the steps would be to use the CBC solver with GMPL.

Thanks for all your help

]]>I am thoroughly enjoying your work on this. It’s very helpful. Forgive me if I missed it, but is there an example implementing the transshipment problem but also assuming multiple commodities (for example, the steel problem but with additional commodities sharing the same capacity constraints).

Best,

Jeff