topic geometryEngine - tolerance (intersect in this case) in ArcGIS JavaScript Maps SDK Questions

geometryEngine - tolerance (intersect in this case)

Oyvind — Fri, 02 Jul 2021 07:33:54 GMT

Hi,

due to small differences in input data, I need to be able to control the tolerance on certain operations. As far as I understand, the tolerance is determined by the geometry's spatial reference.

Is it possible to get around this somehow ?

Also, when trying to call geometryEngine.extendedSpatialReferenceInfo() (to get tolerance information), I get the following error (note: the SpatialReference object is constructed from wkid = 4230)

geometryEngineBase.js:5 Uncaught (in promise) TypeError: Cannot read property 'xc' of null at Function.a [as extendedSpatialReferenceInfo] (geometryEngineBase.js:5) at Module.t (geometryEngine.js:5) .......

Re: geometryEngine - tolerance (intersect in this case)

KenBuja — Fri, 02 Jul 2021 11:58:07 GMT

How are you calling that method? When testing in one of the samples, it works correctly. Insert the following at line 191 to check it out.

console.log(geometryEngine.extendedSpatialReferenceInfo(point.spatialReference));

Re: geometryEngine - tolerance (intersect in this case)

Oyvind — Wed, 04 Aug 2021 09:26:17 GMT

Hi, sorry for delayed reply (vacation).

Yeah, that's the way I'm calling it (there is no other way..). Note that we're using TypeScript (in a React App), via @arcgis/core, so it could be an anomaly due to that.

Re: geometryEngine - tolerance (intersect in this case)

Oyvind — Fri, 06 Aug 2021 11:18:07 GMT

Tested with a dummy example using web-mercator (wkid = 102100), and it works like expected. In my case I'm using ED50 (wkid = 4230), which fails with the error above.

A multitude of the geometryEngine functions states that they only support WGS84 (4326) and Web Mercator (102113, 102100, 3857), so perhaps this is the case here too. In other words, the tolerance is unknown or a default value somewhere.