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132 lines
4.3 KiB
132 lines
4.3 KiB
#' Length of day
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#'
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#' @param date The date to compute the length for. An R [DateTimeClasses] object
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#' or something that can be coerced into one by [as.POSIXlt()].
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#' @param lon,lat longitude & latitude
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#' @return (dbl) length of day
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#' @export
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#' @examples
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#' day_length("2019-12-31", -70.8636, 43.2683)
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day_length <- function(date = Sys.Date(), lon, lat) {
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date <- valid_date(date)
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lon <- valid_lon(lon)
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lat <- valid_lat(lat)
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.Call("r_day_length", date$year+1900L, date$mon+1L, date$mday, lon, lat)
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}
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#' Length of civil twilight
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#'
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#' @param date The date to compute the length for. An R [DateTimeClasses] object
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#' or something that can be coerced into one by [as.POSIXlt()].
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#' @param lon,lat longitude & latitude
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#' @return (dbl) day civil twilight length
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#' @export
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#' @examples
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#' day_length("2019-12-31", -70.8636, 43.2683)
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day_civil_twilight_length <- function(date, lon, lat) {
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date <- valid_date(date)
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lon <- valid_lon(lon)
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lat <- valid_lat(lat)
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.Call("r_day_civil_twilight_length", date$year+1900L, date$mon+1L, date$mday, lon, lat)
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}
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#' Length of nautical twilight
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#'
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#' @param date The date to compute the length for. An R [DateTimeClasses] object
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#' or something that can be coerced into one by [as.POSIXlt()].
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#' @param lon,lat longitude & latitude
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#' @return (dbl) day nautical twilight length
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#' @export
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#' @examples
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#' day_nautical_twilight_length("2019-12-31", -70.8636, 43.2683)
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day_nautical_twilight_length <- function(date, lon, lat) {
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date <- valid_date(date)
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lon <- valid_lon(lon)
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lat <- valid_lat(lat)
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.Call("r_day_nautical_twilight_length", date$year+1900L, date$mon+1L, date$mday, lon, lat)
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}
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#' Length of astronomical twilight
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#'
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#' @param date The date to compute the length for. An R [DateTimeClasses] object
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#' or something that can be coerced into one by [as.POSIXlt()].
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#' @param lon,lat longitude & latitude
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#' @return (dbl) astronomical twilight length
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#' @export
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#' @examples
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#' day_astronomical_twilight_length("2019-12-31", -70.8636, 43.2683)
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day_astronomical_twilight_length <- function(date, lon, lat) {
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date <- valid_date(date)
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lon <- valid_lon(lon)
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lat <- valid_lat(lat)
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.Call("r_day_astronomical_twilight_length", date$year+1900L, date$mon+1L, date$mday, lon, lat)
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}
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#' Sun rise/set times
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#'
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#' @param date The date to compute the length for. An R [DateTimeClasses] object
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#' or something that can be coerced into one by [as.POSIXlt()].
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#' @param lon,lat longitude & latitude
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#' @return (dbl) sunrise/sunset
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#' @export
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#' @examples
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#' sun_rise_set("2019-12-31", -70.8636, 43.2683)
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sun_rise_set <- function(date, lon, lat) {
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date <- valid_date(date)
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lon <- valid_lon(lon)
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lat <- valid_lat(lat)
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.Call("r_sun_rise_set", date$year+1900L, date$mon+1L, date$mday, lon, lat)
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}
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#' Civil twilight
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#'
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#' @param date The date to compute the length for. An R [DateTimeClasses] object
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#' or something that can be coerced into one by [as.POSIXlt()].
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#' @param lon,lat longitude & latitude
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#' @return (dbl) civil twilight
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#' @export
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#' @examples
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#' civil_twilight("2019-12-31", -70.8636, 43.2683)
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civil_twilight <- function(date, lon, lat) {
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date <- valid_date(date)
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lon <- valid_lon(lon)
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lat <- valid_lat(lat)
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.Call("r_civil_twilight", date$year+1900L, date$mon+1L, date$mday, lon, lat)
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}
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#' Nautical twilight
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#'
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#' @param date The date to compute the length for. An R [DateTimeClasses] object
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#' or something that can be coerced into one by [as.POSIXlt()].
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#' @param lon,lat longitude & latitude
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#' @return (dbl) nautical twilight
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#' @export
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#' @examples
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#' nautical_twilight("2019-12-31", -70.8636, 43.2683)
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nautical_twilight <- function(date, lon, lat) {
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date <- valid_date(date)
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lon <- valid_lon(lon)
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lat <- valid_lat(lat)
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.Call("r_nautical_twilight", date$year+1900L, date$mon+1L, date$mday, lon, lat)
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}
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#' Astronomical twilight
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#'
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#' @param date The date to compute the length for. An R [DateTimeClasses] object
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#' or something that can be coerced into one by [as.POSIXlt()].
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#' @param lon,lat longitude & latitude
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#' @return (dbl) astronomical twilight
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#' @export
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#' @examples
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#' astronomical_twilight("2019-12-31", -70.8636, 43.2683)
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astronomical_twilight <- function(date, lon, lat) {
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date <- valid_date(date)
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lon <- valid_lon(lon)
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lat <- valid_lat(lat)
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.Call("r_astronomical_twilight", date$year+1900L, date$mon+1L, date$mday, lon, lat)
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}
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