Read OpenSim TRC File (.trc)

Reads marker trajectory data from an OpenSim TRC file. TRC files store 3D marker positions (X, Y, Z) in a specific header format that differs from MOT/STO files.

Usage

readTRC(path)

Arguments

path

Character string giving the path to the .trc file.

Value

A PhysioExperiment object with three assays: "position_x", "position_y", and "position_z", each with columns named by marker. Header metadata (DataRate, Units, etc.) is stored in metadata().

References

Delp SL, Anderson FC, Arnold AS, Loan P, Habib A, John CT, Guendelman E, Thelen DG (2007). "OpenSim: Open-Source Software to Create and Analyze Dynamic Simulations of Movement." IEEE Transactions on Biomedical Engineering, 54(11), 1940-1950.

See also

readMOT(), readSTO(), readC3D()

Examples

trc_file <- system.file("testdata", "sample.trc", package = "PhysioMoCap")
if (nzchar(trc_file)) {
  pe <- readTRC(trc_file)
  pe
}
#> class: PhysioExperiment
#> dim: 5 x 2 
#> assays(3): position_x, position_y, position_z
#> samplingRate: 120 Hz
#> channels(2): RASI, LASI
#> colData names(2): label, type