Based on motion phases defined in single trials, mean and standard deviation can be determined for a set of normal subjects. Typically one or more files in the .d3d format are used as input and one .d3d file including the normalized and averaged data is written in the projects „normdata“ folder also in the .d3d file format.

The normal data can be visualized as gray bands behind the single trials in the Plot Diagrams components.

This procedure is not recommended but it explains, what is done internally in the autmated process configuration based procedure.

1. Step:

You have to select some input .d3d files each representing the data of a single session of a subject. It has the following hierarchically structure:

 <subject>/<session>/<group>/<phase>/<original trial name>_<phase number>
 <subject>/<session>/<group>/<phase>/<original trial name>_<phase number>
 <subject>/<session>/<group>/<phase>/meanStd
 ...
 <group>/meanStd

The phase numberst starts with „0“. At least the last line „5“ must be included. The other lines are optional but needed for determination of coefficients of multiple correlations (CMC) to describe the „qualtity“ of the normal data. Input files with this structure can be exported from a gait data sheet to the output folder of the project.

1. Step:

The normal data file can then be created from selected input files via the context sensitive „create normal data“ action. The normal data file is automatically written in the normalData folder of the project.

The hierarchically structure of the output is the same as for the input files. The default behavoir is that parts of the hierarchy (of the input files) of the form

<subject>/<session>/<group>/<phase>/meanStd

are averaged inclusive determination of the standard deviation. This results in the output of the form:

<norm>/<group>/<phase>/meanStd

If optional data is available this is simple copied to the output.