Robert Luce

Hello Sven, our first step towards a matrix friendly API for gurobipy indeed lacks such operations like pointwise multiplication with MVar objects, but I have taken note of this feature request.  A...

Infinite or NaN coefficients in linear constraints are disallowed, and we do not support them in file formats like LP, or MPS.  Most often the presence of such coefficients point at an error during...

OK, thanks for letting us know, we'll look into this.   Robert

Hello Laurent, thanks for pointing out that libgurobi81.dylib is not code signed.  Which Xcode setting in your project enforces this signage check, and why do you need to build your project with th...

This article in the knowledge base looks like what you want: https://support.gurobi.com/hc/en-us/articles/360013197172-How-do-I-find-additional-solutions-to-a-model-

I'm assuming that all your variables are unconstrained?  In that case, unfortunately, Gurobi will invoke the barrier method nevertheless.  You may want to consider building the KKT matrix yourself ...

There is no API access to the parameter tuning tool from within R, but you can use the command line tool 'grbtune'.  To do so, export your model to a file using the gurobi_write function, and use t...

The snippet above redefines the 'test' array within the loop, and hence tries to add SOS constraints based on an unpopulated array of variables.  If you want to have an SOS constraint on all of the...

You should use the method GRBModel.addSOS(), see http://www.gurobi.com/documentation/8.1/refman/java_grbmodel_addsos.html  If you want to define an SOS1 constraint on all the item.length^2 variable...

Yes, Gurobi will take advantage of the resident basis to compute an optimal solution after a problem modification such as a coefficient change.