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POSTFEKO
POSTFEKO, the Feko post processor, is used to display the model (configuration and mesh), results on graphs and 3D views.
3D Views
View the simulation data in a 3D view to allow visual interpretation of the data in a human-readable format, as well as to communicate the results in reports and presentations. The 3D view can also be used to verify that the CADFEKO or EDITFEKO model is correct.
Display Settings for 3D View
A number of display settings are available to customise the display of simulation results in the 3D view.
Mesh Display Settings
A number of mesh display settings are available to give you full control of the mesh rendering in the 3D view. These settings are useful if you want to verify the model (simulation mesh).
Mesh Opacity Settings
Specify the mesh opacity as well as the opacity of windscreens triangles and aperture triangles.

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.
- Introduction to POSTFEKO
  Use POSTFEKO to validate meshed geometry and analyse and post-process results.
- Quick Tour of the POSTFEKO Interface
  View the main elements and terminology in the POSTFEKO graphical user interface (GUI).
- Preferences
  POSTFEKO has various default settings that you can configure to customise it to your preference.
- Rendering Options
  A number of rendering options are available to ensure that 3D models and graphs (containing a large number of sample points) are rendered efficiently.
- Model and Project Basics
  You can add a model, open an existing project and save the project.
- Data Import
  Import text files, native data files and Touchstone format files.
- Data Export
  POSTFEKO supports the export of native file formats. These files can be exported to use in other sessions or when further post-processing is required.
- Terminology
  The terms, dataset, slice, trace and 3D result, are used extensively in the documentation. Review the definitions to get a better concept of these definitions.
- Graphs (Cartesian, Polar and Smith Charts)
  Display result data on a graph to allow visual interpretation of the data in a human-readable format, as well as to communicate the results in reports and presentations.
- Cartesian Surface Graphs
  A Cartesian surface graph is a flat colour plot with results plotted against two independent axes.
- 3D Views
  View the simulation data in a 3D view to allow visual interpretation of the data in a human-readable format, as well as to communicate the results in reports and presentations. The 3D view can also be used to verify that the CADFEKO or EDITFEKO model is correct.
  - Creating a New 3D view
    Create a new 3D view to verify the model and visualise the results.
  - Adding a Cutplane
    Create a sectional view of the model by using a cut plane to show internal details that would otherwise be hidden. Multiple cutplanes are supported.
  - Adding Legends to a 3D View
    Add up to four legends to a predefined location on the 3D view. Bind the legend to a specific entity (for example, far field data or mesh display), based on the results displayed in the 3D view.
  - Adding a Quick Single Point Annotation
    Read a single point from a 3D view result by adding a quick single point annotation.
  - Adding Annotations to a 3D View Result
    Add a single point annotation to a 3D view result. Multiple annotations can be added to a single 3D view.
  - Duplicating a 3D View
    Create a duplicate view of a 3D view, and copy the display settings.
  - Duplicating a 3D Simulation Result
    Make a copy of the 3D simulation result.
  - Storing a Local Copy of a Dataset
    Store a local copy of the underlying data that is represented by the 3D simulation result. By storing a local copy, you can modify the existing model and compare the old results to new results.
  - Display Settings for 3D View
    A number of display settings are available to customise the display of simulation results in the 3D view.
    - Visibility of Entities
      All 3D entities are visible by default (except for named points), provided the model contains the entity.
    - Visibility of Symmetry, FDTD Boundary, PBC Boundary and Array Base Element
      Show or hide the display of symmetry, the finite difference time domain (FDTD) boundary, the periodic boundary condition (PBC) boundary and the array base element for finite arrays.
    - Axes Settings
      Show or hide the display of the main axes, mini axes and tick marks.
    - Mesh Display Settings
      A number of mesh display settings are available to give you full control of the mesh rendering in the 3D view. These settings are useful if you want to verify the model (simulation mesh).
      - Mesh Rendering Options
        View the display options for mesh colour, model outline, segment radius, wire coating, anisotropic media, windscreen layers and mesh normals.
      - Mesh Opacity Settings
        Specify the mesh opacity as well as the opacity of windscreens triangles and aperture triangles.
      - Mesh Visibility Settings
        View the visibility settings for segments, triangles, apertures, windscreens, tetrahedra, voxels, cuboids and uniform theory of diffraction (UTD) polygons and cylinders.
    - Result Settings
      A number of display settings are available to customise 3D view results.
- Frequency Domain Results
  The Solver contains a number of frequency domain solution methods, as well as a time domain solution method. By default, all simulation results are obtained in the frequency domain, unless explicitly using the time analysis tool in POSTFEKO to convert the results to the time domain.
- Time Domain Results
  With the time analysis tool in POSTFEKO, electromagnetic scattering problems can be analysed in the time domain. The time domain results are obtained by applying an inverse fast Fourier transformation (IFFT) on the frequency domain simulation results.
- Animation
  Use animation to obtain a better understanding of results or export the animation to use in a presentation or report.
- Generating Reports
  POSTFEKO is a useful tool to help analyse and present data in a useful format. It is often required to use the processed results in a report or presentation. To help make it easier to generate these reports, several tools are available in POSTFEKO.
- Lua Scripting
  Feko provides a powerful scripting language that allows you to create scripts that control CADFEKO and POSTFEKO.
- Tools
  POSTFEKO has a collection of tools that allows you to quickly validate the model, for example, measure distances, measure angles and finding specific mesh elements.
- Math Functions in POSTFEKO
  View the list of supported math functions.
- Files Generated by POSTFEKO
  View the files associated and generated by POSTFEKO.
- Default Shortcut Keys
  View the shortcut keys available for POSTFEKO for faster and easier operation of POSTFEKO.
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.
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.

Mesh Opacity Settings

Specify the mesh opacity as well as the opacity of windscreens triangles and aperture triangles.

The mesh opacity settings are available on the 3D View contextual tabs set, on the Mesh tab in the Opacity group.

Note: Only the opacity settings relevant are available. For example, if the model does not contain any windscreens the Windscreen icon is disabled.

Table 1. Display options for mesh opacity, windscreens triangles and aperture triangles.
Icon	Icon text	Description
	Mesh opacity	Specify the opacity for mesh elements.
	Windscreen	Specify the opacity for windscreen elements.
	Aperture	Specify the opacity for aperture elements.

Note: For all the opacity settings, a drop-down list is available to specify a custom opacity level. A level of 100% is equivalent to setting no opacity, and 0% is equivalent to full transparency.

Figure 1. Mesh opacity: 100% (left) and 20% (right).