Calculate speed along a path

Source: R/prepare_covariates.R

calc_dist calculate speed between locations, taking a dataframe as input. Speed can also be smoothed over the two steps before and after the each point.

calc_speed(
  x,
  coord.names = c("x", "y"),
  timecol = "dateTime",
  smoothed = FALSE,
  units = "hour"
)

Arguments

x

data.frame with locations

coord.names

names of coordinates column in x

timecol

names of POSIXct time column

smoothed

whether speed are smoothed or not

units

units for time calculation. Default "hour"

Value

vector of distance

Author

Remi Patin

Examples

if (FALSE) calc_speed(df,coord.names = c("x","y"), timecol = "dateTime",
smoothed = T)