is_day: Use time and location to find if events occured during the...

In SESman/rbl: Biologging tools for diving predators in R

Description

Use time and location to find if events occured during the day or the night

Usage

is_day(time, lat, lon, elevlim = c(-18, 18), type = c("character",
  "logical"))

Arguments

time	a POSIXlt, POSIXct or data.frame. If a data frame order of columns must be from Year to Second (6 columns).
lat	numeric vector of latitudes.
lon	numeric vector of longitudes.
elevlim	Sun elevation thresholds to distinguish between day and night
type	Should the output type be logical (TRUE for days, FALSE for night and NA otherwise) OR character ("Day", "Night", "Transition" and NA for missing locations).

See Also

sun_position

Examples

## Not run: 
do.call(is_day, exses$stat[ , c("time", "lat", "lon")])

## End(Not run)

SESman/rbl documentation built on May 9, 2019, 11:10 a.m.