Description Usage Arguments Details Value
Convert streams of twilights to sunrise/sunset pairs
1  | twilightPairs(twilight, rise)
 | 
twilight | 
 the observed times of twilight as POSIXct.  | 
rise | 
 logical vector indicating which twilights are sunrise.  | 
This function converts the twilight, rise format used by Stella and Estelle into successive sunrise and sunset pairs.
A dataframe with columns
 | 
 times of earlier twilight as POSIXct objects  | 
 | 
 times of later twilight as POSIXct objects  | 
 | 
 logical vector indicating whether the twilights span a day.  | 
 | 
 the midpont of the two twilights.  | 
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