The 3ms criterion commonly used to measure potential for chest injury.

Syntax

x,y = Clip(time, accel, window, mode=0)

x = Clip(time, accel, window, mode=1)

y = Clip(time, accel, window, mode=2)

w = Clip(time, accel, window, mode=3)

Arguments

Name

Description

time

The time vector of data to analyze (in seconds).

accel

The acceleration vector. Must match length of time vector and be real only.

window

The window width (in seconds - usually 0.003 for chest).

mode

0 to output x,y vectors to draw the clip window.

1 to output the x vector to draw the clip window.

2 to output the y vector to draw the clip window.

3 to output a vector containing the height of the clip window, and its left and right end points.

Outputs

Name

Description

x

A vector containing the x coordinates of the clip window.

y

A vector containing the y coordinates of the clip window.

w

A vector containing the height of the clip window, and its left and right end points.

Example

Find the clip window dimensions associated with a pair of time and acceleration vectors.

Syntax

w = Clip(time, accel, 0.003, 3)

Results

Results as would be seen if printed out.

Comments

clip computes the maximum value that the linear interpolation of a time series (typically a chest resultant acceleration filtered to a 300 Hz cutoff) meets or exceeds for an interval of at least 3 ms, based on the linearly interpolated time series. A popup dialog will display the delta time.

See Also:

ClipContinuous