Window of time for one tower

[Chloe Boynton]

Does anyone know if there is a way to highlight a window of time (ie. from 9pm at night to 6 am the following morning), not specifically looking at tags, but all detections from a tower? I'm looking to try and isolate potential roosting sites for juvenile Barn Swallows.

Thanks!

Chloe

[Phil Taylor]

Just subset (filter in package dplyr) your dataset appropriately then plot. 

for example ... (not tried)

require(lubridate) ## for ymd_hms function

require(dplyr) ## for filter

my.recv <- "SGXXYY"

ts.start <- ymd_hms("2016-05-23 12:00:00")

ts.end <- ymd_hms("2016-05-24 6:00:00")

sub.df <- filter(my.df, 

        ts > ts.start & ts < ts.end, 

        recv == my.tower)

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Phil Taylor
Bird Studies Canada Chair in Ornithology
Acadia University, Wolfville, NS.