coords_to_km: Geographic coordinates to kilometers coordinates

In RoyChristian/startR: Homebrewed package holding my most useful functions

Description

Transform geographic coordinates into a distance based coordinates. The function is based on the Haversine formula.

Usage

coords_to_km(lon, lat, lon0, lat0)

Arguments

lon	longitude vector in degrees
lat	latitude vector in degrees
lon0	longitude of the centroid of the survey area
lat0	latittude of the centroid of the survey area

Value

Return a data frame holding the new coordinates

Examples

deg.grid <- expand.grid(x=seq(40,50,by=2.5), y=seq(60,70,by=2.5))
km_.grid <- coords_to_km(lon=deg.grid$x, lat=deg.grid$y, lon0=mean(deg.grid$x), lat0=mean(deg.grid$y))
plot(km.grid)
#END

RoyChristian/startR documentation built on May 9, 2019, 10:34 a.m.