If you start the GMS-Manager the first time, you will see the following window:
Here you can define the relevant GAMS installation folder, create a project file and add a GAMS license.
In the first section of the welcome window you can choose the folder where GAMS is installed.
If GMS-Manager does not find the folder automatically you can search it manually by clicking on the button "Change GAMS system folder..."
Here you can create you first GMS-Manager-project.
Simply click on create or add a project file and you will be able to create a new project file or open an existing one.
If you have a GAMS license file you can add it with the button " Add license file..."
If not, you have the normal GAMS limitations for users not owning a GAMS license. (restriction by Maximum model size: 2000 constrains and 3000 variables)
When you click on "Run GMS-Manager" you have two options to open or create files in your project. The first one is to open or create a file from the task bar and the second one is to choose a file in the tree view on the right.
Click on this button to create a new file.
Click on this button to open existing files and add them to your project structure.
Click on this button to run debug and run a gams job (the current base file)
Click on this button to compile a project file (the current base file). This way, some errors which are marked in brown will disappear.
For showing the functionality of GMS-Manger, the file transport.gms is transformed, so that other files are called using $include-statements.
If you open this file, you will be asked if you want to declare it as a new base file. If you agree, the file will be opened and interpreted by the GMS-Manager. All included files will be marked in the same color as the base-file transport.gms (blue).
You will see all symbols which are used in your base file and included files on the left side of the GMS-Manager window.
GAMS-jobs can be executed by clicking on the symbol and terminated by clicking on the symbol.
You will always run the current base-file (in our case transport.gms), even if a file, which is included by the base-file is currently opened and selected.
In the upper menu bar of GMS-Manager you see these two icons. The left one is the "GMS-Manager" icon, the right one the "GDX-Editor" icon. If you click them, you will switch between the GMS-Manager and the GDX-Editor. If you click two times on the "GDX-Editor" icon, you will see the data-charts of your chosen gdx-symbol.
When you click on "GDX-Editor" icon on the right side, you will see the symbols contained in the gdx-file on the left side and the contained sets and their elements on the upper part of the right side.
The parameter "rep" is declared to have 4 sets. All sets are "*", so that the set names are generated automatically (e.g. rep_Set0). You can change the order of the sets and whether they are shown as a row or column by clicking on the head line, keeping the mouse clicked and dragging them to another position.
The GDX-Editor contains several methods of calculating statistical values and comparing cells. The settings can be found in the "Statistics"-Tab in the bottom-bar. For further details, see the documentation of gdx statistics.