geo.functions: Geographical functions
In jobonaf/pesco: Data fusion for air quality data

Some useful geographical functions

ll2utm     (rlat, rlon, iz=32)
ll2utm.grid(lat, lon, round=-2, iz=32)

Dist(x,y,xi,yi)
which.nearest(xo,yo,xi,yi)

`rlat`	latitude
`rlon`	longitude
`lat`	latitude (numeric vector)
`lon`	longitude (numeric vector)
`iz`	UTM zone
`round`	rounding on the UTM target coordinates
`x`	numeric x coordinate
`y`	numeric y coordinate
`xi, xo`	numeric vector of x coordinates
`yi, yo`	numeric vector of y coordinates

ll2utm converts geographical coordinates (latitude/longitude) in UTM WGS84, while ll2utm.grid does the same on vectors of coordinates, applying some rounding, supposed they are on a regular grid in the target UTM system.

jobonaf/pesco documentation built on May 19, 2019, 2:58 p.m.