SteveM

Harry, GAMS is a model manager that replaces the need for a model manager in native JuMP, Python or R (ompr or ROI). Because a model is formulated in GAMS...

> Is this because of how MILPModel handles multidimensional decision variables? I could probably form my decision variables x to be along a single vector if necessary. Right. MILPModel was...

BTW, you may want to install the development versions of ompr, ompr.roi to ensure that the latest functionality is being accessed by your MIPModel formulation: ``` remotes::install_github("dirkschumacher/ompr") remotes::install_github("dirkschumacher/ompr.roi") ```

> I am interested in Warehousing problems and that code ran perfectly. Thank again... Jim Jim, any posted MIPModel formulations of real cases can be very helpful. If you could...

> Also is there any way to provide some financial support for the ompr project? I'm certainly gaining financially by using ompr in my consulting work, I'd like to help...

Re: Dirk: > Edit2: If you want to use the pull request version of rickyars, you may need to merge it manually with ompr master first since it is not...

> Hello! > > I'm new to ompr. The following suggestion might be already implemented. I think it would be better if once the indexes for a variable were stablished...

> > > Thanks @sbmack for bringing this up again. I will try to look into this. I think the general problem is that the semantics of `MILPModel` are unexpected...

> On a side note: if you feel adventures, I started to experiment with ideas for a better modelling system (that may or may not be the next major version...

> > > Currently, the distributive mode AHP is used for priority calculations. I would suggest adding the ideal mode AHP as an additional option. It's a strong alternative approach...