Description Usage Arguments Details Value
Summarise auxiliary data in specified intervals
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date |
the sequence of sample times as POSIXct. |
y |
the sequence of responses. |
start |
the start of the time interval to summarize. |
end |
the end of the time interval to summarize. |
FUN |
summary function |
twl |
the sequence of estimated twilight times as POSIXct. |
before |
the interval (hours) before twilight to include in the interval. |
after |
the interval (hours) after twilight to include in the interval. |
Given a time series of responses and a sequence of start and end
times defining time intervals spanned by the time series,
intervalData
computes a summary statistic for each
interval. The twilightData
is similar, but the time
intervals are defined as a number of hours before and after a
given sequence of twilight times.
the data summary for each twilight.
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