topic Re: Identify Widget - Point Selection Issue in Web AppBuilder Custom Widgets Questions

Identify Widget - Point Selection Issue

JasonStanton__GISP — Thu, 03 Oct 2019 13:51:49 GMT

Robert,

I am using the Identify widget in WAB DE 2.13. I am using the point selection tool to select points. Some times it works, some times it doesn't, and most oddly - sometimes it selects a point up to 100 feet away. The data, data frame/service and basemap are all WKID 10200. I have tried to play with the Identify Tolerance to no avail. Any ideas what might be happening here?

Jason

Re: Identify Widget - Point Selection Issue

RobertScheitlin__GISP — Thu, 03 Oct 2019 14:14:50 GMT

Jason,

Have you ever used this widget before 2.13 with this web map?

Re: Identify Widget - Point Selection Issue

JasonStanton__GISP — Thu, 03 Oct 2019 14:32:00 GMT

No I have not. Should I use a different version?

Re: Identify Widget - Point Selection Issue

RobertScheitlin__GISP — Thu, 03 Oct 2019 14:40:25 GMT

No I was just wondering if you had past experience with it working correctly. I have not had any reports of this type of issue. The layers you are identifying are coming from AGOL or your own ArcGIS Server?

Re: Identify Widget - Point Selection Issue

JasonStanton__GISP — Thu, 03 Oct 2019 14:42:46 GMT

AGS 10.7.1. I have used this widget extensively with other web maps in 2.7 and previous and never had any issues.

Re: Identify Widget - Point Selection Issue

RobertScheitlin__GISP — Thu, 03 Oct 2019 14:49:29 GMT

So you have used the identify widget before but just not with this particular web map?

Re: Identify Widget - Point Selection Issue

JasonStanton__GISP — Thu, 03 Oct 2019 14:59:18 GMT

I have used previous versions of the Identify widget in previous versions of WAB. This is the first time I am using the 2.12 version of the Identify widget in WAB 2.13

Re: Identify Widget - Point Selection Issue

RobertScheitlin__GISP — Thu, 03 Oct 2019 15:11:55 GMT

OK, just to be sure you did not use the identify widget in 2.7 with this particular web map though.

Re: Identify Widget - Point Selection Issue

JasonStanton__GISP — Thu, 03 Oct 2019 15:13:03 GMT

that is correct. this is a new web map

Re: Identify Widget - Point Selection Issue

RobertScheitlin__GISP — Thu, 03 Oct 2019 15:22:08 GMT

Is the app or web map or service public where you could share it with me for testing?

Re: Identify Widget - Point Selection Issue

JasonStanton__GISP — Thu, 03 Oct 2019 15:52:03 GMT

link removed

Re: Identify Widget - Point Selection Issue

RobertScheitlin__GISP — Thu, 03 Oct 2019 16:35:36 GMT

Jason,

I am testing now. One thing I have noticed is that you have several duplicate points in your data.

Re: Identify Widget - Point Selection Issue

JasonStanton__GISP — Thu, 03 Oct 2019 16:41:24 GMT

That's really odd... can you shoot me a couple lot id's so I can check? There shouldn't be any duplicates.

Re: Identify Widget - Point Selection Issue

RobertScheitlin__GISP — Thu, 03 Oct 2019 17:21:55 GMT

V-1-1 has OID 3138 and 2476
V-1-2 has OID 2134 and 2662

Re: Identify Widget - Point Selection Issue

JasonStanton__GISP — Thu, 03 Oct 2019 17:25:58 GMT

Thanks, I never noticed that. I was always working on the other cemetery while testing

Re: Identify Widget - Point Selection Issue

RobertScheitlin__GISP — Sun, 12 Dec 2021 09:15:52 GMT

Jason,

These two functions have to updated in the Widget.js.

      createQueryParams: function (layers, geom) {
        var queryParamsList = [];
        array.forEach(layers, lang.hitch(this, function (layer) {
          var queryParams = new Query();
          queryParams.spatialRelationship = Query.SPATIAL_REL_INTERSECTS;
          if(geom.type === 'point'){
            geom = this.pointToExtent(geom , this.identifytolerance);
            if (layer.geometryType === 'esriGeometryPoint') {
              queryParams.spatialRelationship = Query.SPATIAL_REL_CONTAINS;
            }
          }
          queryParams.geometry = geom;
          queryParams.outFields = ['*'];
          queryParams.returnGeometry = this.returngeometryforzoom;
          queryParams.outSpatialReference = this.map.spatialReference;
          queryParamsList.push(queryParams);
        }));
        return queryParamsList;
      },

      pointToExtent: function(objPoint, distance){
        var clickOffset = distance || 6;
        var scrnPnt = this.map.toScreen(objPoint);
        scrnPnt.update(scrnPnt.x + clickOffset, scrnPnt.y + clickOffset);
        var nPnt = this.map.toMap(scrnPnt);
        var queryExtent = new Extent(
          Math.min(objPoint.x, nPnt.x),
          Math.min(objPoint.y, nPnt.y),
          Math.max(objPoint.x, nPnt.x),
          Math.max(objPoint.y, nPnt.y),
          objPoint.spatialReference);
        return queryExtent.centerAt(objPoint);
      },‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

and find this line in the Widget.js and delete the "+"

this.iResultLen += this.list.items.length;‍

so it looks like this:

this.iResultLen = this.list.items.length;‍

I will be releasing a 2.13 version soon that has these changes.

Re: Identify Widget - Point Selection Issue

JasonStanton__GISP — Thu, 03 Oct 2019 18:03:57 GMT

THANK YOU!!

Re: Identify Widget - Point Selection Issue

DrewPhillips3 — Mon, 25 Nov 2019 23:21:17 GMT

I'm having the same issue. (Robert, you may remember me from elsewhere; I though I'd take a crack at customizing the Identify widget which works amazingly).

The point select options works perfectly if "Return Geometry for Zoom" is true. But this makes Identifying other layers slow, as all geometries must be returned.

Is it possible that the info returned from the point selection option MUST include its geometry, the way that it is programmed? I'm thinking that removing the geometry return makes the selection fail but only for point selections. Maybe I could return geometry for the point only as a semi-workaround.

Thanks!

Re: Identify Widget - Point Selection Issue

RobertScheitlin__GISP — Sun, 12 Dec 2021 09:15:54 GMT

Drew,

Yes there is an bug in the code when using the point tool and return geometry is false. Here is the code fix for that.

I will include this in the 2.14 release of this widget.

This code goes in the Widget.js showIdentifyResults function starting at line 1315 in the 2.13 version of code.

idResult.point = (this.returngeometryforzoom) ? this.getGeomCenter(identifyResult.feature.geometry) : this.getGeomCenter(this.identifyGeom);
idResult.geometry = (this.returngeometryforzoom) ? identifyResult.feature.geometry : this.identifyGeom;‍‍

The old block of code looked like this:

            if(this.identifyGeom.type === 'point' && identifyResult.feature.geometry.type === 'point'){
              idResult.point = idResult.geometry = (this.returngeometryforzoom ) ? identifyResult.feature.geometry : this.identifyGeom;
            }else{
              idResult.point = (this.returngeometryforzoom) ? this.getGeomCenter(identifyResult.feature.geometry) : this.getGeomCenter(this.identifyGeom);
              idResult.geometry = (this.returngeometryforzoom) ? identifyResult.feature.geometry : this.identifyGeom;
            }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Thanks for the heads up on this.

Re: Identify Widget - Point Selection Issue

DrewPhillips3 — Wed, 04 Dec 2019 17:11:51 GMT

Thanks for the response. Should I replace the entire "old block" in the widget code with the 2 lines above - remove the entire if/else conditional? Or change the code in the else block?