class GeoUtm::LatLon

Attributes

lat[R]

lon[R]

Public Class Methods

new(lat, lon) click to toggle source

Create a new coordinate instance based on latitude and longitude

@param [Float] the coordinate latitude @param [Float] the coordinate longitude

# File lib/geoutm/latlon.rb, line 14
def initialize(lat, lon)
  raise GeoUtmException, "Invalid longitude #{lon}" unless (-180.0...180.0).member? lon
  @lat, @lon = lat, lon
end

Public Instance Methods

to_s() click to toggle source

Textual representation of the coordinate

# File lib/geoutm/latlon.rb, line 20
def to_s
  north_south = if @lat >= 0.0 then 'N' else 'S' end
  east_west = if @lon >= 0.0 then 'E' else 'W' end
  '%0.6f%s %0.6f%s' % [@lat.abs, north_south, @lon.abs, east_west]
end

to_utm(options = {}) click to toggle source

Convert the coordinate in latutude/longitude into the UTM coordinate system

@option options [String,Symbol,Ellipsoid] :ellipsoid The ellipsoid to use @option options [String] :zone Force the coordiante into another UTM zone than it belongs. Use this to compare two coordinates in different zones @return [UTM] The converted UTM representation

# File lib/geoutm/latlon.rb, line 31
def to_utm(options = {})
  UTM::latlon_to_utm self, options
end