Description Usage Arguments Details Value
Find intervals of darkness spanning more than 24 hours.
1 | findChunk24(tagdata, threshold)
|
tagdata |
a dataframe with columns |
threshold |
the light threshold that defines twilight. |
The findTwilights
function find twilight times by
searching for adjacent nights, but is unable to search beyond a
period of light or dark spaaning greater than 24 hours. This function
finds extended periods of light or dark that span more than 24 hours.
A dataframe with one row for each intervals and columns
|
the start of the interval as POSIXct |
|
the end of the interval as POSIXct |
|
the midpoint of the interval as POSIXct |
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