topic Re: how to change the zoom scale for the geocoder? in ArcGIS Web AppBuilder Questions

how to change the zoom scale for the geocoder?

Pulaski_AreaGIS — Sat, 11 Dec 2021 23:14:49 GMT

I would like to set the geocoder to zoom to 1:1200. I think I would change the expand.0.0625 for the Point geometry but I am not sure.

if (feature) {
          var resultGeometry = feature.geometry;
          if (resultGeometry.type === 'point') {
            anchorPoint = resultGeometry;
            zoomExtent = this.map.extent.centerAt(anchorPoint).expand(0.0625);
          } else if (resultGeometry.type === 'polyline') {
            anchorPoint = resultGeometry.getPoint(0, 0);
            zoomExtent = resultGeometry.getExtent().expand(1.1);
          } else if (resultGeometry.type === 'polygon') {
            anchorPoint = resultGeometry.getCentroid();
            zoomExtent = resultGeometry.getExtent().expand(1.1);
          } else if (resultGeometry.type === 'mulitpoint') {
            anchorPoint = resultGeometry.getPoint(0);
            zoomExtent = resultGeometry.getExtent().expand(1.1);
          } else {
            anchorPoint = resultGeometry;
            zoomExtent = this.map.extent;
          }

Re: how to change the zoom scale for the geocoder?

RobertScheitlin__GISP — Tue, 09 Jun 2015 14:35:24 GMT

Pulaski Area GIS,

change the point logic something like this:

zoomExtent = this.map.extent.centerAt(anchorPoint);

this.map.setScale(1200);

Re: how to change the zoom scale for the geocoder?

Pulaski_AreaGIS — Sat, 11 Dec 2021 23:14:52 GMT

if (feature) {
          var resultGeometry = feature.geometry;
          if (resultGeometry.type === 'point') {
            anchorPoint = resultGeometry;
            zoomExtent = this.map.extent.centerAt(anchorPoint);this.map.setScale(1200);
          } else if (resultGeometry.type === 'polyline') {
            anchorPoint = resultGeometry.getPoint(0, 0);
            zoomExtent = resultGeometry.getExtent().expand(1.1);
          } else if (resultGeometry.type === 'polygon') {
            anchorPoint = resultGeometry.getCentroid();
            zoomExtent = resultGeometry.getExtent().expand(1.1);
          } else if (resultGeometry.type === 'mulitpoint') {
            anchorPoint = resultGeometry.getPoint(0);
            zoomExtent = resultGeometry.getExtent().expand(1.1);
          } else {
            anchorPoint = resultGeometry;
            zoomExtent = this.map.extent;
          }

I tried this but did get any result in the app.

Re: how to change the zoom scale for the geocoder?

RobertScheitlin__GISP — Tue, 09 Jun 2015 15:01:09 GMT

Pulaski Area GIS,

Make sure you are changing the widget.js for the Geocoder widget in the particular app you are testing. If you make the change in the client stemapp folder then you will only see the change in a new app.

Re: how to change the zoom scale for the geocoder?

Pulaski_AreaGIS — Tue, 09 Jun 2015 15:19:09 GMT

I checked that, still see no change in the zoom levels. Thanks for the help.

Re: how to change the zoom scale for the geocoder?

RobertScheitlin__GISP — Sat, 11 Dec 2021 23:14:54 GMT

Pulaski Area GIS,

Well this took some figuring....

Make these changes and you should be able to get the point geocode to use a different scale (assuming that 1200 is different from what is already returning, I tested with a larger scale 4513.988705).

in the showResults function (line one is very important):

geocoder.autoNavigate = false;


          if (resultGeometry.type === 'point') {
            anchorPoint = resultGeometry;
            //zoomExtent = this.map.extent.centerAt(anchorPoint).expand(0.0625);
            this.map.setScale(4513.988705);
            this.map.centerAt(anchorPoint);
          }

In the setupInfoWindowAndZoom function change the single line for:

this.map.setExtent(newExtent);

        if(geocodeResult.feature && geocodeResult.feature.geometry.type !== 'point'){
          this.map.setExtent(newExtent);
        }

Re: how to change the zoom scale for the geocoder?

Pulaski_AreaGIS — Wed, 10 Jun 2015 12:42:41 GMT

Robert,

This worked but the Image is not refreshing on zoom. Any thoughts?

Thanks

Re: how to change the zoom scale for the geocoder?

RobertScheitlin__GISP — Wed, 10 Jun 2015 13:30:20 GMT

Pulaski Area GIS,

but the Image is not refreshing on zoom

??? What image?

Are there any errors in the web console?

Re: how to change the zoom scale for the geocoder?

Pulaski_AreaGIS — Wed, 10 Jun 2015 13:56:44 GMT

Sorry, the basemap is not refreshing to the new scale. I have one console error but is was there before, I started this.

Re: how to change the zoom scale for the geocoder?

RobertScheitlin__GISP — Wed, 10 Jun 2015 14:22:21 GMT

Pulaski Area GIS,

Make sure that you are setting a scale that is equal to one of your maps LODs.

Re: how to change the zoom scale for the geocoder?

haThach — Thu, 15 Oct 2015 20:33:47 GMT

Hi Robert,

I created a geocoder service using a polygon feature, the search widget result zoom really close on the map. I tried to find the location as pointed above but can't seem to find the code to change the zoom scale extent setting.

Re: how to change the zoom scale for the geocoder?

RobertScheitlin__GISP — Thu, 15 Oct 2015 23:11:17 GMT

Ha Thach,

This thread has t do with WAB 1.1. The search widget does not have a show results function (as it is all handled by the JS API internally).

Re: how to change the zoom scale for the geocoder?

haThach — Fri, 16 Oct 2015 03:06:19 GMT

Thanks Robert. Will there be some functions like this available on the next release of WAB 1.3?

Re: how to change the zoom scale for the geocoder?

RobertScheitlin__GISP — Fri, 16 Oct 2015 12:00:25 GMT

Not that I am aware of. It would involve an JS API change.

Re: how to change the zoom scale for the geocoder?

ColeAndrews — Fri, 16 Oct 2015 13:20:50 GMT

Is it zooming in closer than the full extent of the polygon (i.e., can't see the entirety of the polygon you search for)? If so, you can calculate the polygon extents and configure that in the locator, before publishing the geocode service.

Re: how to change the zoom scale for the geocoder?

haThach — Tue, 20 Oct 2015 18:29:15 GMT

Yes, this is what I wanted to do. I tried your approach by creating a new field "zoomExtent" and calculate using the shape area field. I didn't get it to work. Am I doing something wrong? This is what I get....

Here is how I setup for my system locator....

Re: how to change the zoom scale for the geocoder?

ColeAndrews — Tue, 20 Oct 2015 19:15:11 GMT

If using a Geocode service, the zoom extents can be configured in the locator before publishing to a service. For a polygon feature, to set the zoom extent as the outer boundary (to show the entire polygons), try the following:

In ArcMap, run "Add Geometry Attributes" tool. Input the polygon file and select EXTENT. Run.
The ymin, ymax, xmin,xmax values are added for each feature.

Configure the locator display extents to use the calculated extent fields. Create locator.
When you're done creating the locator, right click>>properties and make sure the output display extents is set to "yes"

Once you publish the locator as a Geocode service and source the service in your web app geocode/search widget, the result is zoomed to these defined extents.

Does this get at what you need?

Re: how to change the zoom scale for the geocoder?

haThach — Thu, 22 Oct 2015 13:06:03 GMT

Thanks Andrews, it works on my end. I'm really appreciated for all your help.