Appendix C: Revision History¶

RELEASE 2.2 (June 5, 2015)

New Features

Processing of data along different motion directions with respect to the laboratory reference system (forward, backward, 90right, 90left)
Computation of CoP coordinates for force platforms with pads
Possibility to skip the computation of joint centers in StaticElaboration
Interpolation of gaps in marker trajectories with size less than MaxGapSize (chosen by the user in the elaboration.xml file)
Piecewise filtering for marker trajectories having NaN values due to a missed interpolation
Inclusion of EMG labels while saving EMG data in .mat format
Definition of a new output folder (maxemg) for each dynamic elaboration, with plots and log data related to the computation of maximum EMG values
Storing of all raw EMGs selected for the computation of maximum EMG values and the corresponding envelopes as .mat files
Addition of information about the trial and the time corresponding to each maximum EMG value, when printing the maxemg.txt output file and logging in .mat format (maxemg.mat)
Plot of raw EMG and envelope for each muscle, corresponding to the trial where the maximum EMG value occurs
Availability of multiple formats documentation (GitHub Project Pages)
Compatibility with MATLAB R2014b

Code Changes

Added optional MotionDirection element in acquisition.xsd to support trials with different directions of motion
Added optional PadThickness element in laboratory.xsd and acquisition.xsd, to account for plate padding in the computation of CoP coordinates
Added MarkersInterpolationType with MaxGapSize element in elaboration.xsd, to let the user define the gaps’ maximum size for the interpolation of marker trajectories
Modified identification of the first and last frame for marker trajectories: added case of NaN values when markers are initially not visible
Added possibility to disable warnings from BTK tool in C3D2MAT_btk
Moved saving of maxemg.txt output file inside maxemg folder
Handled error that can occur if input C3D file names do not include the repetition number (as required)
Handled error in Y axis scale setting in EnvelopePlotting.m
Renamed CHANGES.txt to CHANGES.md

Bug Fixes

Fixed reading of C3D files without data from force platforms (FP)
Fixed handling of FP data when a laboratory has more than 2 FPs of different types
Fixed selection of Leg on ForcePlatform in AcquisitionInterface when there are more than 2 FPs in the laboratory
Fixed definition of timeStartFrame and timeEndFrame in selectionData.m to account for an initial starting condition of t=0 and frame number=1. Fixed accordingly the definition of frameArray in writetrc.m
Fixed computation of the hip joint center (HJC) with the Harrington method (HJCHarrington.m) when the input static file has a frame number lower than 3

RELEASE 2.1 (September 8, 2014)

New Features

Code Changes

Changed elaboration.xsd to add support of different output file formats, preserving compatibility with previous versions.
Renamed mainStaticElaboration.m as StaticInterface.m
Moved main programs (C3D2MAT.m, ElaborationInterface.m, StaticInterface.m) to functions
Moved internal functions in private folders
Renamed all readme.txt to README.md
Modified y axis scale setting of envelope plots
Modified data storage structure: added dynamicElaborations folder to group all the multiple executions of DataProcessing

Bug Fixes

RELEASE 2.0 (May 9, 2014)

New Features

Support to MATLAB 64 bit and multiplatform (C3D2MAT based on BTK)
EMG selection using Analog Labels from each C3D input file
Shoulder, elbow, and wrist JC computation for static trials, and examples of setup files for Griffith University markerset
Missing values for markers trajectories identified by NaN instead of 0 in .trc output files

Code Changes

Added src/shared folder to store functions common to several steps
Modified filtering of markers trajectories: they are filtered only when visible and only if they have no gaps (DataFiltering.m, ZeroLagButtFiltfilt.m)
Modified filtering of GRF data from type 1 force platform: filtering is applied only to non zero values to avoid smoothing due to zero values (data from force platform of type 1 are stored in C3D files after thresholding)
Modified data interpolation: markers trajectories are interpolated only if gaps of consecutive frames are shorter than a fixed number defined according to the video frame rate (DataInterpolation.m)
Modified retrieval of AnalogData in C3D2MAT: removed assumption of analog data stored only in analog channels subsequent to those dedicated to force data. Now they can be stored in any analog channel independently from force data.
Renamed replaceWithNans.m as replaceMissingWithNaNs.m
Renamed matfiltfilt2.m as ZeroLagButtFiltfilt.m
Removed warning messages caused by the lack of subject’s first and last names when loading a predefined acquisition.xml
Added last selected folder in text fields of graphical user interfaces (GUIs)

Bug Fixes

Modified transformation of COP coordinates from local to global reference system: translation added only for non zero values.
User is not required to set a new identifier each time he/she load an already available elaboration.xml file as in version 1.0.
Changed the definition of the interval where markers are visible in replaceMissingWithNaNs.m (the definition of var ‘index’)
Fixed the computation of the hip joint center (HJC) with the Harrington method (HJCHarrington.m)

RELEASE 1.0 (February 17, 2014)

Initial Release