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Showing results for tags 'geolocators'.
Hi all, I have a few geolocator files that I have not been able to process ( The location estimates are scattered all across the specified grid) and I believe it has something to do with the plot_slopes_by_location function. I know that this function is just to determine whenever the bird leaves the study site, however, in the graph it revealed that there are no dusk estimates after September (see attached picture). All of the geolocators that I have been unable to analyze have this similar problem. I'm not sure if that's actually the root of my problems or if its something else, this is just my best guess. Is anybody aware if this could be the problem and if it is is there anyway to correct for this problem? Thanks, Devin
Bonjour, I am working with geolocators data collected with Intigeo C65 devices on seabirds breeding in the Arctic (higher red dot on map1) and migrating in southern Atlantic in winter. Parts of the migration occurs during spring and fall equinoxes. I used a rooftop cablibration made in southern Quebec (lower red dot on map1) for about 14 days and I used the findHEZenith function to calculate a new zenith angle on the wintering area. Then I set a list of Zenith changing depending on the period of the year. All my script is running, but for some birds, I have a strange movement up-north after a first staging period. When I create the initial path (thresholdPath function), everything seems to be okay, but when I run the estelleMetropolis function in 3 steps (burn-in, tuning, final runs), no matter how many iterations I do and no matter how many chains I set, the up-north movement appears. On the path on map2, the blue part is ± 10 days around equinoxes, gray is ± 15 days and black ± 20 days. I tried changing all the parameters one by one, but the problem persists. Any idea what could cause this issue? Merci, Yannick