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Calculate Speed from Position Data

Source: R/calculate_speed.R
calculate_speed.Rd

Calculates the instantaneous speed from x, y coordinates and time data. Speed is computed as the absolute magnitude of velocity (change in position over time).

Usage

calculate_speed(x, y, time)

Arguments

x

Numeric vector of x coordinates

y

Numeric vector of y coordinates

time

Numeric vector of time values

Value

Numeric vector of speeds. The first value will be NA since speed requires two positions to calculate.

Examples

if (FALSE) { # \dontrun{
# Inside dplyr pipeline
data |>
  group_by(keypoint) |>
  mutate(speed = calculate_speed(x, y, time))
} # }