The EDX package is composed by the following components:

1)   the Electromagnetic Markup Language (EML) based on XML. The key idea is that a single data entity, the variable, is sufficient to the static representation of data stored into files.
For example, an electromagnetic field sampled on a plane at multiple frequencies can be represented as:
     Variable emField
        Domain frequency
        Domain samplingX
        Domain samplingY
        Component E (complex, dimension=3, unit=V/m)
        Component H (complex, dimension=3, unit=A/m)
    end

2)   the Electromagnetic Data Dictionaries (EDDs) that contain and define the 'words' to be used to describe the physical entities, e.g. the electromagnetic field, for which data are stored in a file.
It establishes the precise meaning of the data, how they are represented numerically and the conventions adopted.

Here an sketch of how a physical quantity is represented in an EDX Data Dictionary:

3)   the EDI Software Library providing all functions required to access data. The Electromagnetic Data Interface (EDI) is a lightweight library (a few thousands lines) written in C++ and equipped with application programming interfaces in C++, FORTRAN90 and MATLAB®.

Finally, the EDX Companion Tools have been developed to ease the use of the EDX:

·         a data browser and visualisation tool

·         a validation tool for EDX implementations

·         a Matlab® Generic Data Dictionary interface.