sttkveloc {stabilo}

Velocity of a Center-of-pressure displacement

Description

Computes the mean velocity of a given Center-of-pressure displacement in the horizontal plane.

Usage

sttkveloc(dados, fs)

Arguments

dados

Data frame with two columns "x" and "y"

fs

The sampling frequency used in data recording

Details

'dados' is a data frame containing two columns named "x" and "y". The pairs (x, y) are the coordinates of the center-of-pressure acquired in a period of time.

Value

The velocity of the COP displacement sttkveloc.

Author(s)

Jose Magalhaes de Oliveira

See Also

sttkangle, sttkellipseplot

Examples

x <- c(1,3,7,5,9,4,3,6,8,2,8,9,4,5,7,3,4,7,9,3,2,5,3,4,8,2,9,7,4,2)
y <- c(6,3,9,1,3,7,4,9,6,1,7,3,9,7,2,6,3,4,8,1,9,3,6,8,1,6,2,9,8,3)

COP <- data.frame(x, y)
fs <- 50

COPvelocity <- sttkveloc(COP,fs)