GAMS World Forum

Hi, With CPLEX (the log tells me that you use CPLEX) you can update the solver option file. I attached an example based on model dice from the GAMS model library and the trigger file example from the support wiki. Cplex starts with optcr=0.01, after ~10 seconds it uses a cplex.op2 with optcr=0.1 and...

Hi,

GAMS comes with a stochastic library that allows you draw random numbers from the beta distribution: https://www.gams.com/latest/docs/UG_Ext ... ticLibrary

I hope this helps!

Fred

If I run parameter VD0, VINTCD0, VFACD0, VF0, VINTCF0, VFACF0, TAXM0, VT0, TN, VQH0, QG, QINV, FSAVD0, FSAVF0, FSAVK0, SIGMA, GAMMA, SIGMAP, ITA; $call gdxxrw FRICTION.xlsx @FRICTION.txt $gdxin FRICTION.gdx $load VD0 VINTCD0 VFACD0 VF0 VINTCF0 VFACF0 TAXM0 VT0 TN VQH0 QG QINV FSAVD0 FSAVF0 FSAVK0 SI...

Hi,

As I wrote in my previous post, the line numbers refer to the echo print in the lst file.
Looking up the lines and checking the data, there is obviously a division by zero.

Best,
Fred

Hi,

Note that the line numbers refer to the echo print in the lst file.
Unfortunately, some if the include files are missing in the zip archive, so it is not possible to reproduce the problem.

Best,
Fred

When you run set i / -2, -1, 0, 1, 2 /; you should get the following error which is very explicit about UNQUOTED elements having to start with a letter or digit. 1 set i / -2, -1, 0, 1, 2 /; **** $338$338 $172$172 **** 172 Element is redefined **** 338 Unique element expected - symbol was not an ele...

Yes, see https://www.gams.com/latest/docs/T_STUD ... O_SETTINGS

For Windows the dark theme was introduced in Studio version 0.14.6.
If you download the latest GAMS from https://www.gams.com/download/ you get Studio version 1.1.0 and should be good.

I hope this helps!

Fred

Hi, I guess that you are executing GAMS in a directory with non-ASCII characters. GAMS has trouble with this. Please run GAMS in a directory that does only contain [a-zA-Z] characters. If this is not possible (because your home directory already has non-ASCII characters in it) choose a solveLink opt...

Hi, Problem is how you use set t at the end of equation cost.. TC =e= sum[t, [{SP(t)*(buy(t)-sell(t))+SC*stock(t)}/((1+i)**t)]]; While you use set elements 1,2,3,4, set elements can in general be strings (e.g. apple, orange, cherry, ...) which is why you cannot make calculations with set elements li...

What I suggested was a way to get your own license, free of charge, that allows you to solve the model yourself. The license type is called a community license (https://www.gams.com/latest/docs/UG_License.html#GAMS_Community_Licenses). I thought that you would probably prefer being able to solve you...