Client side area and length measurement

PauPérez_Puigcerver

Anybody knows how works the new API Enhancement for measure area and length at client side? There aren't any example.

Thanks

Pau Pérez
Conselleria de Medio Ambiente, Agua, Urbanismo y Vivienda
http://cartoweb.cma.gva.es

khutchins

We are working on adding a sample that shows how to use these, in the meantime the following code snippets might help:

GeodesicLengths:

map.graphics.add(new esri.Graphic(geometry, graphicSymbol));
//Since the map projection is web mercator, convert to lat/lon
var geographicGeometry = geometry;

//calculate geodesic length on client
var lengths = esri.geometry.geodesicLengths([geographicGeometry], esri.Units.KILOMETERS);

Geodesic Areas:

map.graphics.add(new esri.Graphic(geometry, graphicSymbol));
var geographicGeometries = [];
//if self intersecting, simplify using geometry service
if (esri.geometry.polygonSelfIntersecting(geometry)) {
  //if self intersecting, simplify using geometry service
  geometryService.simplify([geometry], function(simplifiedGeometries) {
    dojo.forEach(simplifiedGeometries, function(simplifiedGeometry, idx) {
      geographicGeometries.push(esri.geometry.webMercatorToGeographic(simplifiedGeometry));
    });
    var areas = esri.geometry.geodesicAreas(geographicGeometries, esri.Units.ACRES);
    dojo.byId("result").innerHTML = "The area of the polygon is: " + areas[0] + " Acres";
  });
}
else {
  geographicGeometries.push(esri.geometry.webMercatorToGeographic(geometry));
  var areas = esri.geometry.geodesicAreas(geographicGeometries, esri.Units.ACRES);
  dojo.byId("result").innerHTML = "The area of the polygon is: " + areas[0] + " Acres";
}
}