find centroid of a polygon

rsharma

i want to calculate centroid (center point ) of a polygon. 

LukeSmallwood

Thanks rajni sharma‌ - I see what you are trying to do. This works for me:

        const ringJson = [[["172.4843305878348","-43.48191185124988"],["172.4877698503442","-43.48248171686965"],["172.48715361282302","-43.484065878559875"],["172.48428867831893","-43.48421950013839"],["172.4843305878348","-43.48191185124988"]]]

        var boundaryJson = {"rings":ringJson, "spatialReference":sr};

        var boundary= ArcGISRuntimeEnvironment.createObject("Polygon", {json: boundaryJson});

        console.log("boundary", boundary)

        console.log(JSON.stringify(boundary.json));

        var centroid = GeometryEngine.labelPoint(boundary);

        console.log("==========");

        console.log("centroid", centroid);

        console.log(JSON.stringify(centroid.json));

For reference, when you see "qml point sum hex number" you are printing the address of the Point object. To see the details of the point you need to either print property values or stringify the json:

console.log(JSON.stringify(centroid.json));