[R-sig-Geo] decrease sampling rate of GPS track observations

[Mathieu Basille]

Hi Erdal,

Your best shot is probably to use adehabitatLT, prepare your track as a 
regular trajectory (i.e. with perfectly equal time lags, and missing 
observations present in the trajectory), and then use 'subsample'.

Look at the vignette of adehabitatLT [1] for the first steps to get a 
regular trajectory.

Hope this helps,
Mathieu.


[1] 
http://cran.r-project.org/web/packages/adehabitatLT/vignettes/adehabitatLT.pdf



Le 31/05/2015 03:58, Erdal Karaca a écrit :
> Hi all,
> I have a GPS track with a sampling rate of 1 observation per second.
> I would like to decrease the number of observations to, for example, 1
> observation per 10/20/30 sec or drop all observations between turning
> points. What function/package would be best suited?
>
> Thanks.
>
> Best regards,
> Erdal
>
> 	[[alternative HTML version deleted]]
>
> _______________________________________________
> R-sig-Geo mailing list
> R-sig-Geo at r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>

-- 

~$ whoami
Mathieu Basille
http://ase-research.org/basille

~$ locate --details
University of Florida \\
Fort Lauderdale Research and Education Center
(+1) 954-577-6314

~$ fortune
« Le tout est de tout dire, et je manque de mots
Et je manque de temps, et je manque d'audace. »
  -- Paul Éluard