maptools (version 0.6-3)

solarpos-methods: Solar position methods

Description

The solarpos methods return values of azimuth and elevation for solar position for spatial position and date/time values.

Arguments

See Also

crepuscule-methods, solarnoon-methods, sunriset-methods

Examples

Run this code
## Location of Helsinki, Finland, in decimal degrees,
## as listed in NOAA's website
hels <- matrix(c(24.97, 60.17), nrow=1)
Hels <- SpatialPoints(hels, proj4string=CRS("+proj=longlat +datum=WGS84"))
d041224 <- as.POSIXct("2004-12-24", tz="EET")
solarpos(hels, as.POSIXct(Sys.time(), tz="EET"))
solarpos(Hels, as.POSIXct(Sys.time(), tz="EET"))

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