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GeometryEngine 3.15 union error when using try-catch

Question asked by andrewbiggins on Dec 11, 2015
Latest reply on May 4, 2018 by KEkenes-esristaff

I have tried the GeometryEngine.union method (within JavaScript 3.15 API) but it throws the following error when it is placed within a try-catch statement:

 

TypeError: Unable to get property 'hq' of undefined or null reference

 

It seems to work when not placed within a try-catch, but since it is throwing this error I'm concerned about using it within a production application. Also, the equivalent Union method in the ArcGIS Server GeometryService does not throw an error.

 

I thought the error might be due to undefined spatial references in the array of geometries passed to it, but I have checked and they are all defined.

 

Can anyone please advise why this error is being thrown?

 

arrayUtils.forEach(AdviceGlobal.savedFeaturesGraphicsLayer.graphics, function (savedGraphic) {
 // Define spatial reference for geometryEngine
 var thisGeometry = savedGraphic.geometry;
 console.log(thisGeometry.spatialReference);
 if (thisGeometry.spatialReference == null) {
  thisGeometry.spatialReference = map.spatialReference;
 }
 geometryToCapture.push(thisGeometry);
});
// Try geometryEngine
try {
    var unionedGeometry = geometryEngine.union(geometryToCapture);
    saveFeature(unionedGeometry);
}
catch (e) {
    onUnionError(e);
}

 

 

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