I hope you are well. I am new to the CTMM package and have read and listened to information around whether data plotted on the variograms is okay for home-range analysis.
I have these weird patterns from my data.
It is movement data from a Vulture in Peru. The timestamps are variable in that the time between fixes ranges from 1min, 10min, 20min, or 1 hour. For CTMM models does the data need to be standardised (thin data to a point every 10mins or one hour?).
This particular species the tag records until 8pm.
I looked at the colours of the tracks and the blue and red overlap, suggesting it is not migrating, however, there is a big loop in the data away from the concentrated area of points.
The zoomed in variogram increases linearly and then starts to do this zig zag pattern. I have a few other species where they do the same (some more extravagant) . The zoomed out version you can see the pattern more extensively. However, it does like it reaches asymptote albeit with the zig zag.
Are you able to advise if the variograms outputs are okay to model home-ranges? and if there's another check I can do within the ctmm workflow that helps me include / exclude individuals from HR analysis.
Many thanks in advance.