Gekko 3.0 user manual

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Gekko 3.0 user manual

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Last modified: 15/3 2019


NOTE: New user manual design, ported to these formats: chm, html or pdf (new). Status regarding the user manual is the following. All pages have been read through, all visible errors have been corrected, and large parts of the pages have been rewritten. What is now lacking is to read through each page more thoroughly, among other things testing that the syntax and examples all work as intended. This second phase of renovating the Gekko 3.0 user manual is ongoing.  


Gekko Timeseries and Modeling Software is an open-source software system for handling and analyzing timeseries data, and for solving and analyzing large-scale economic models. See the Gekko homepage:


The current 3.0 version is a beta version. So the current version is not completely stable yet, and the user should keep that in mind if using it for serious purposes. Not all of the capabilities of Gekko 2.4 have been ported yet. See the list of issues on this page:


Note about Gekko 3.0 beta


The user manual contains the following chapters:


Introduction. Introductory chapter.

Gekko syntax basics. In this chapter, the syntax is described.

Gekko commands. This chapter describes in detail the purpose of the different Gekko commands, the syntax to be used, the results produced, together with examples etc.

Gekko functions. Gekko functions can be used in expressions. The input parameters and the output type is described. The functions are divided into categories.

Gekko solvers. A description of some of the Gekko solvers.

Comparison with similar software. Gekko is compared to AREMOS and EViews.

Appendix. More info on automatic translation.


The present introductory chapter contains the following sections:


New features. A list of changes in Gekko since the previous version.

Setup. How to setup Gekko on a pc.

Basic concepts. An overview of some of the main capabilities and concepts of Gekko.

Time periods. Explaining how global time and local time works.

Databank search. Describes how databanks are searched for variables in Gekko.

Wildcards. Explains the special rules concerning wildcards and type/frequency symbols.

Filenames. How filenames and paths are handled in Gekko.

Function keys. A list of function keys like F1, F2, etc. in Gekko.

Help system. Description of the in-built help system.

Under the hood. A short section on some of the main technologies/components used in Gekko.

Guided tour. Some step-by-step examples of doing stuff with Gekko (mostly how to solve models).