getGEOperim function

Get Lat-Lon Perimeter

Get Lat-Lon Perimeter

Get rectangular perimeter of region defined by set of Lat-Lon

getGEOperim(lon, lat, PROJ, N)

Arguments

  • lon: vector of lons
  • lat: vector of lats
  • PROJ: projection structure
  • N: number of points per side

Details

perimeter is used for antipolygon

Returns

List: - x: x-coordinates projected

  • y: y-coordinates projected

Author(s)

Jonathan M. Lees<jonathan.lees.edu>

Examples

### target region PLOC= list(LON=c(138.3152, 139.0214), LAT=c(35.09047, 35.57324)) PLOC$x =PLOC$LON PLOC$y =PLOC$LAT #### set up projection PROJ = setPROJ(type=2, LAT0=mean(PLOC$y) , LON0=mean(PLOC$x) ) perim= getGEOperim(PLOC$LON, PLOC$LAT, PROJ, 50)
  • Maintainer: Jonathan M. Lees
  • License: GPL (>= 2)
  • Last published: 2024-07-09

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