National Institutes of Health
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The Biomechanics Laboratory at the National Institutes of Health in Bethesda, Maryland has been using C3D files since the mid 1980's and originally made a number of programs available:
- MOVE3D - a DOS application designed to provide six degree-of-freedom analysis of the motion of anatomical segments. This performs analysis on the key Kinematic and kinetic parameters that characterize human movement.
- NIHGRAF - an application program that displays and graphs the output generated by MOVE3D.
- EVENTS - a data analysis program for C3D files that automates the determination of events within the motion data for rapid analysis of patient and test data.
C3D files produced by NIH software are usually the native format for the operating system (DEC, MSDOS, and SGI) and store data as Integer by default.