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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.
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.
Graph Settings
A number of settings are available to customise a graph. From changing the font, font size, adding fill, changing the marker styling, adding shapes and text boxes, editing the graph title, footer and many more settings to obtain graphs that suits your styling.
Specifying the Number Format for an Axis
Specify the number format for the axes and the number of significant digits that are display on the axes.

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.
  - Graph Types
    POSTFEKO supports three types of graphs, namely Cartesian graph, polar graph and Smith chart. Each graph type represents data in a different way to make it easier to interpret for a given application.
  - Graph Settings
    A number of settings are available to customise a graph. From changing the font, font size, adding fill, changing the marker styling, adding shapes and text boxes, editing the graph title, footer and many more settings to obtain graphs that suits your styling.
    - Editing a Graph Title, Footer and Axes
      Modify the graph title, graph footer, vertical axis label and horizontal axis label.
    - Changing the Font
      Modify the default font and font styling for text on a graph.
    - Adding a Fill to a Text Box or Shape
      Add a colour fill to the interior of a text box or shape.
    - Changing the Line Styling
      Change the line style, line colour and line weight of a selected trace.
    - Changing the Marker Styling
      Change the marker style, marker colour and marker size for a selected trace.
    - Changing the Marker Placement
      Change the marker placement for a trace to view the calculated points in a continuous frequency simulation or for aesthetic reasons.
    - Adding a Shadow to Text or a Shape
      Add a drop shadow to text or shape.
    - Specifying the Major Axes Range
      Specify the range for the major axes.
    - Specifying the Grid Spacing
      Specify the grid interval for the major (and minor) grid.
    - Changing the Axis Scale to Logarithmic
      Modify a graph to make use of a logarithmic scale when the data is spread over large range. A logarithmic (log) scale allows you to view the data on a non-linear scale.
    - Reversing the Axis Order
      Change the order in which values are plotted along the axis of a Cartesian graph.
    - Changing the Unit of an Axis
      Modify the axes units to allow data to be plotted in a familiar unit (for example, to change dBmV/m to dBuV/m) or to shorten the axis text and make it more readable.
    - Specifying the Number Format for an Axis
      Specify the number format for the axes and the number of significant digits that are display on the axes.
  - Graph Legend
    A graph legend is a summary of the trace or traces displayed on the graph. The legend also indicates which colour represents each trace on the legend
  - Annotations and Cursors
    Use annotations and cursors to read and interpret plotted results.
  - Overlaying an Image on a 2D Graph
    Add an image to a Cartesian graph, polar graph or Smith chart to better interpret and understand the results.
  - Duplicating a Graph
    Create a duplicate view of a graph, complete with all settings.
  - Copying and Converting to a Different Graph Type
    Create a copy of the graph and change the graph type (if the data is compatible with both). For example, create a polar graph copy from a Cartesian graph.
  - Trace Manipulation
    A trace is a line plotted on a graph that represents a quantity relative to an independent axis. The styling of the trace as well as the representation of the data can be manipulated.
- 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.
- 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.

Specifying the Number Format for an Axis

Specify the number format for the axes and the number of significant digits that are display on the axes.

Select the graph where you want to change the major axis (or minor axis).

On the Cartesian context tab, on the Display tab, on the Axes group, click the Axis settings icon.
Select the axis that you want to modify.
- To modify the grid range for the horizontal axis, click Horizontal.
- To modify the grid range for the vertical axis, click Vertical.

Change the number format for the axis.

Under Number format, select one of the following:
1. From the Number format drop-down list, select one of the following:
  - Decimal
  - Scientific

Modify the number of significant digits for the axis.

Under Number format, select one of the following:
- To specify the number of significant digits that you want to see on the graph axis, clear the Automatically determine the number of significant digits check box.
  - From the Number of significant digits drop-down list, select the number of digits you want to view on the graph.
- To determine the number of significant digits for the graph axis automatically, select the Automatically determine the number of significant digits check box.
Click OK to apply the settings and to close the dialog.