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TXYZ

The TXYZ measure returns the net translational torque vector acting on marker i, represented in the coordinate system of marker k. All force and constraint elements acting between markers i and j are included in the calculation of the torque. If j is not specified, TXYZ measures the sum of all force and constraint elements acting on marker i. If k is not specified or if k=0, the torque is represented in the GROUND coordinate system. To specify k without specifying j, use j=0.

Format

TXYZ(i[,j][,k])

Arguments

i	An integer that specifies the identifier of the marker at which the magnitude of the net torque is to be calculated.
j	A second integer that specifies a marker identifier. All forces acting between the [i,j] pair are to be included in the calculation. Set j = 0 or do not specify if you are interested in all forces acting on marker i.
k	An integer that specifies the identifier of a marker (coordinate system) in which the x-component of the torque is to be returned. k defaults to the global coordinate system when it is not specified.

Extended Definition

Mathematically, TXYZ is calculated as:

where:  

•	TX is the TX measure.

•	TY is the TY measure.

•	TZ is the TZ measure.

Examples

The total torque on marker 5, resolved on the x-axis of marker 4.

VARIABLE/1, FUN=TXYZ(5)*UVX(4)

which is alternatively available as TX(5,0,4).