stephenfeather

/*jslint vars: true, sloppy: true, nomen: true, maxerr: 1000 */


function LatLon(lat, lon, rad) {
  if (typeof(rad) == 'undefined') rad = 6371;  // earth's mean radius in km
  // only accept numbers or valid numeric strings
  this._lat = typeof(lat)=='number' ? lat : typeof(lat)=='string' && lat.trim()!='' ? +lat : NaN;
  this._lon = typeof(lon)=='number' ? lon : typeof(lon)=='string' && lon.trim()!='' ? +lon : NaN;
  this._radius = typeof(rad)=='number' ? rad : typeof(rad)=='string' && trim(lon)!='' ? +rad : NaN;
}