[tlocoh-info] Sampling frequency graph

[Wayne Marcus GETZ]

Just to be clear.  You can analyze the full period using a subset of the higher frequency data added to the full set of the lower frequency data.  You can also analyze the higher frequency period on its own.  So the two periods overlap and the  full contains the partial.



> On Nov 26, 2020, at 8:56 AM, Chavoux Luyt <chavoux at gmail.com> wrote:
> 
> Hi Cassandra,
> 
> I agree with the answer by Damian Lidgard. As I understand it, you define a "visit" period (in order to see whether 2 points in the same area is part of a single visit or a revisit). Typically, for predators I used the longest period they would stay on a single carcass. So if your sample frequency is longer apart than the "visit period", there is no way to classify it as anything else than a revisit. I would analyse the 2 periods separately.
> 
> HTH.
> Chavoux Luyt
> 
> Op Do. 26 Nov. 2020 om 07:10 het Cassandra Arkinstall <cassandra.arkinstall at gmail.com <mailto:cassandra.arkinstall at gmail.com>> geskryf:
> Hi all, 
> 
> I am new to tLoCoH and have a question about the sampling frequency graphs. I have GPS tracking data for bilbies however there are some gaps and missing data for the first part of my study (due to antenna breakages). This means I only have 1-2 fixes per day for the first month, and then several fixes per day for the following month (as the antennas were repaired).
>  
> This then affects my sampling frequency graphs (example attached), and I am concerned that the points at a low sampling frequency will affect the temporal analyses. Should I consider trimming these data points using “lxy.thin.byfreq()”? Or is it best to keep them in?
> 
> Thanks in advance. 
>  
> Kind regards,
> Cass 
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