I have tracking data (coordinates, date and time) of an animal, and I want to select the data between sunset and sunrise. As the data are from different areas and months, the time of sunrise and sunset varies.
With getSunlightTimes (from {suncalc}) I added the time of sunrise and sunset of the specific place and date as columns.
Now I have to select the data points where the time lies between sunset and sunrise. How can I do this?
I tried it with normal subsets and other ways of filtering data and with the columns as POSIXct, but it didn’t work out.
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