Measurement Dijit Not Working

Question

Given the code below, I receive the error: "Uncaught TypeError: Cannot call method 'areasAndLengths' of null" when finishing the area measurement. And receive the error: "Uncaught TypeError: Cannot call method 'project' of null" when attempting the line and point measurements. Has anyone else seen this? dojo.require("esri.dijit.Measurement"); ..... gsvc = new esri.tasks.GeometryService("http://myServerURLHere/arcgis/rest/services/Utilities/Geometry/GeometryServer"); ..... var measurement = new esri.dijit.Measurement({ map: map, defaultAreaUnit: esri.Units.ACRES, defaultLengthUnit: esri.Units.FEET }, dojo.byId('measurementDiv')); measurement.startup(); ....

JimBridge · Answer

I was getting the 'areasAndLengths' of null error till I set the defaults geometry service. Once  I did that it  worked.

esriConfig.defaults.geometryService = new GeometryService(geometryServiceUrl)
        var measurement = new esri.dijit.Measurement({
            map: map
        }, dojo.byId('measurementDiv'));
        measurement.startup();

KevinMacLeod1 · Answer

Gibby by any chance have you set async to true in dojoconfig?

JanelYang · Answer

Hi, The measurement part in your code looks fine. What is the GeometryService for? If you can provide your complete code, we can look at it and figure out what happened. The API of measurement widget is fairly straightforward. Here is a simple sample you can look at: Simple Map