Created
June 2, 2014 01:19
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sunrise.set.R function
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| sunrise.set <- function (lat, long, date, timezone = "UTC", num.days = 1) | |
| { | |
| lat.long <- matrix(c(long, lat), nrow = 1) | |
| day <- as.POSIXct(date, tz = timezone) | |
| sequence <- seq(from = day, length.out = num.days, by = "days") | |
| sunrise <- sunriset(lat.long, sequence, direction = "sunrise", | |
| POSIXct = TRUE) | |
| sunset <- sunriset(lat.long, sequence, direction = "sunset", | |
| POSIXct = TRUE) | |
| ss <- data.frame(sunrise, sunset) | |
| ss <- ss[, -c(1, 3)] | |
| colnames(ss) <- c("sunrise", "sunset") | |
| return(ss) | |
| } |
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I have data in hourly data, how to separate my hourly data in "Day" and "Night".