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Get sun position

Source: R/get_sun_position.R
get_sun_position.Rd

Get sun position (declination, elevation, and azimuth) for a given day and time.

Usage

get_sun_position(
  lon = NULL,
  lat = NULL,
  date = NULL,
  hour = NULL,
  omit.nights = TRUE
)

Arguments

lon

Longitude (numeric value between -180 and 180)

lat

Latitude (numeric value between -90 and 90)

date

A Date object or character giving the date in YYYY-MM-DD format (e.g. "2021-02-19"). Can be a vector too, e.g. c("2021-02-19", "2021-08-04"). Note different years have no effect on sun position calculations.

hour

Hour of the day. Integer number (or numeric vector) between 0 and 23 (both included).

omit.nights

Logical. If TRUE, sun positions will only be returned when it is daytime (i.e. nighttimes will be omitted)

Value

A data frame with solar elevation and azimuth per hour as returned by solartime::computeSunPositionDoyHour()

but converted to degrees rather than radians.

Examples

sunpos <- get_sun_position(lon = -5.99, lat = 37.39, date = "2021-02-19", hour = 15)
sunpos <- get_sun_position(lon = -5.99, lat = 37.39,
date = c("2021-02-19", "2022-08-05"), hour = 10:14)