Welcome Lucy

If you got the time for every position you can get the time difference as
seconds. (check out as.POSIXct and strptime in package adehabitat).  You got
the distance you say.... then the speed would be easily calculated.

good luck
Henrik


___________________________
Henrik Lundqvist
h.lundqvist@gmail.com
henrik.lundqvist@huv.slu.se


2010/3/10 Lucy Hawkes <l.hawkes@bangor.ac.uk>

> Hello,
>
> I am a new spatial R user, and am analysing animal tracking data. I would
> like to calculate the speed the animal travelled between points (assuming
> linearity etc). However, even though I can find various functions for
> distance, turning angles and analyses, I can't find one for speed.
>
> I'm sure I'm probably missing what's right in front of me, but can anyone
> suggest where to look next?
>
> With best wishes
>
> Lucy
>
> --
> ____________________________
> Dr Lucy Hawkes
> Post Doctoral Research Officer
> Bangor University
> School of Biological Sciences
> Brambell Laboratories E30
> Deiniol Road, Bangor, LL57 2UW
> T: +44 (1248) 388 813
> E: l.hawkes@bangor.ac.uk
>
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