Description Usage Arguments Details Value Author(s) Examples

Calculates the distance between the consecutive locations of a Move or MoveStack object.

1 2 3 4 |

`x` |
a |

`pointDistance`

is used to calculate the distances.

Distance in map units.

If the projection of the coordinates is long/lat all values are returned in meters, otherwise in the map units of the projection of the move object. For long/lat distance is calculated on a sphere using the ellipsoid, for other projections the calculation is done on a plane using Pythagoras. Check and set the projection of your Move, MoveStack or MoveBurst object using the `proj4string()`

function.

If a `move`

or `moveBurst`

object is provided, a numeric vector one element shorter than the number of locations is obtained.

If a `moveStack`

object is provided, a list with one element per individual containing a numeric vector one element shorter than the number of locations is obtained

Marco Smolla & Anne Scharf

1 2 3 4 5 6 7 8 9 10 11 12 13 | ```
## distance from a Move object
data(leroy)
head(distance(leroy))
# to add this information to the move object, a "NA" has to be assigened
# e.g. distance is assigned to the first location of a segment
leroy$distance <- c(distance(leroy), NA)
## distance from a MoveStack object
data(fishers)
str(distance(fishers))
# to add this information to the moveStack object, a "NA" has to be assigened
# e.g. distance is assigned to the first location of a segment
fishers$distance <- unlist(lapply(distance(fishers), c, NA))
``` |

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