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EDITFEKO
EDITFEKO is used to construct advanced models (both the geometry and solution requirements) using a high-level scripting language which includes loops and conditional statements.
PREFEKO Language Concepts
The language used to create and modify models in EDITFEKO is the PREFEKO language.
PRINT Command
The PRINT command prints strings, numbers and other information to screen or the .out file to display the solution progress and for debugging purposes.

Welcome
Release Notes
See what's new in the latest release.
Get Started
The Feko Getting Started Guide contains step-by-step instructions on how to get started with Feko.
Examples
The Feko Example Guide contains a collection of examples that teaches you Feko concepts and essentials.
Introduction to Feko
Feko is a comprehensive electromagnetic solver with multiple solution methods that is used for electromagnetic field analyses involving 3D objects of arbitrary shapes.
CADFEKO
CADFEKO is used to create and mesh the geometry or model mesh, specify the solution settings and calculation requests in a graphical environment.
POSTFEKO
POSTFEKO, the Feko post processor, is used to display the model (configuration and mesh), results on graphs and 3D views.
EDITFEKO
EDITFEKO is used to construct advanced models (both the geometry and solution requirements) using a high-level scripting language which includes loops and conditional statements.
- Introduction to EDITFEKO
  EDITFEKO is a scripting interface for advanced users to construct models using a high-level scripting language, which includes FOR loops and conditional IF-ELSE statements.
- Quick Tour of the EDITFEKO Interface
  View the main elements and terminology in the EDITFEKO graphical user interface (GUI).
- PREFEKO Language Concepts
  The language used to create and modify models in EDITFEKO is the PREFEKO language.
  - Comments
    Comments are descriptive text added to the .pre file to help understand and follow the code execution.
  - Structure of the PRE File
    The order of the cards in the .pre file specifies the order of the steps during the simulation.
  - Card Formats
    Two card formats are supported namely column-based and colon-separated. This is relevant to users who externally generate Feko input files and can be ignored by users using EDITFEKO to modify the cards.
  - Variables
    Variables are parameters that help to create easily adjustable models such as the investigation of structures with varying geometry.
  - Labels in Feko
    In the PREFEKO language and Feko in general, items in a model are identified by their labels. Operations are performed and electromagnetic properties are applied to the items through their labels.
  - Conditional Statements
    Conditional statements provide functionality for changing parameters inside a loop, or for a parameter(s) to depend on other parameter(s).
  - PRINT Command
    The PRINT command prints strings, numbers and other information to screen or the .out file to display the solution progress and for debugging purposes.
  - FILEREAD Function
    The FILEREAD function reads data from an arbitrary ASCII file.
  - Symbolic Node Names
    Symbolic node names or named points can be constructed as either single points or as an array of points. Arrays of points can then be referenced by only specifying the array name. This is useful when a large number of points are required.
- Creating Geometry in EDITFEKO
  Create geometry in EDITFEKO according to the guidelines to ensure that different mesh parts are electrically connected. Meshes can also be imported to create a model.
- Preferences
  EDITFEKO has various default settings that you can configure to customise it to your preference.
- Files Generated by EDITFEKO
  View the files associated and generated by EDITFEKO.
- Shortcut Keys
  View the shortcut keys available for EDITFEKO for faster and easier operation of EDITFEKO.
Feko Solution Methods
One of the key features in Feko is that it includes a broad set of unique and hybridised solution methods. Effective use of Feko features requires an understanding of the available methods.
Optimisation in Feko
Feko offers state-of-the-art optimisation engines based on generic algorithm (GA) and other methods, which can be used to automatically optimise the design and determine the optimum solution.
Feko Utilities
The Feko utilities consist of PREFEKO, OPTFEKO, ADAPTFEKO, the Launcher utility, Updater and the crash reporter.
Description of the Output File of Feko
Feko writes all the results to an ASCII output file .out as well as a binary output file .bof for usage by POSTFEKO. Use the .out file to obtain additional information about the solution.
Feko Application Macros
A large collection of application macros are available for CADFEKO and POSTFEKO.
Scripts and Application Programming Interface (API)
CADFEKO and POSTFEKO have a powerful, fast, lightweight scripting language integrated into the application allowing you to create models, get hold of simulation results and model configuration information as well as manipulation of data and automate repetitive tasks.
Appendix
Reference information is provided in the appendix.

PRINT Command

The PRINT command prints strings, numbers and other information to screen or the .out file to display the solution progress and for debugging purposes.

The following print commands are available:

!!print

Prints text to screen.

!!print_warning

Prints the warning messages to the screen.

For terminal runs, the string WARNING precedes the warning message.
For runs from the GUI, the warning message is displayed in colour.

!!print_error

Prints the warning messages to the screen. To stop execution use the !!EXIT statement.

!!print_to_out

Writes the text to the .out file while the Feko kernel is run.

The print commands accept multiple arguments separated by commas.

Example 1

Print the error message and exit if the variable #a is < 2*#b:

!!print "2*#b = ", 2*#b
!!if #a < 2*#b then
!! print_error "The value of #a is too small:", #a, " (exiting now)"
!! exit
!!endif

Example 2

Print the value of #b to the .out file at the location where it appears in the .pre file.

!!print_to_out "This run was done with #b = ", #b