topic Re: Create a Link for zooming into a parcel from a different webpage in ArcGIS JavaScript Maps SDK Questions

Create a Link for zooming into a parcel from a different webpage

GopiParthasarathy — Tue, 12 Aug 2014 06:17:12 GMT

I have a need where a user needs to zoom into a parcel based on what parcel id they give in the string...

for example

imagine this is the string http://webmap...?parcelid=<USER ENTERS PARCEL ID>?window=new

then click ok

now it should open up a new window and open that web map and zoom to that parcel id..

whats the way to make it happen?

Thanks

Gopi

Re: Create a Link for zooming into a parcel from a different webpage

SteveCole — Tue, 12 Aug 2014 15:02:11 GMT

This will be (Legacy) pseudo-code but essentially, create a barebones web map (something like an ESRI sample) and, in the map init function, perform a query for your parcel and then zoom to the result it returns. Here's something similar I did for a web map that would zoom into the location of a feature if a lat/long coordinate pair was passed as part of the URL:

        //Evaluate the URL of this HTML page to determine if any parameters were passed with it
        var htmlPagePath = window.location.toString();
        var qLocation = htmlPagePath.indexOf('?');


        if (qLocation < 1)
        {
            passedLatLong = false;
        }
        else
            passLatLong = true;

        //If a coordinate location was passed as a parameter, zoom the map to it
        if (passedLatLong)
        {
            //Extract the lat/long coordinates passed as a parameter with the URL
            var coordStr = window.location.toString().substr(qLocation + 1,window.location.toString().length);
            var coords = new Array();
            coords = coordStr.split(',');


            //Create a lat/long point
            var bridgeLoc = new esri.geometry.Point(coords[0],coords[1], new esri.SpatialReference({wkid:4326}));

            //set the map extent based on the lat/long coordinate passed. The coordinate must be converted
            //to Web Mercator since the web services used have been defined with that projection..
            map.setExtent(pointToExtent(map,esri.geometry.geographicToWebMercator(bridgeLoc),3));
        }

Obviously, in your case, you would perform a queryTask on your parcels using the supplied parcel ID and then zoom to the result.

Re: Create a Link for zooming into a parcel from a different webpage

KellyHutchins — Tue, 12 Aug 2014 16:25:44 GMT

The 'History API to track selected feature' sample in the help shows how to do this. The application checks for a url parameter called parcelid when it loads and will then zoom to the parcel.

History API to track selected feature | ArcGIS API for JavaScript‌

Re: Create a Link for zooming into a parcel from a different webpage

OwenEarley — Tue, 12 Aug 2014 23:40:31 GMT

Kelly has a great answer. For example calling the sample page with parcel ids:

http://developers.arcgis.com/javascript/samples/exp_history/?parcelid=1919427026

http://developers.arcgis.com/javascript/samples/exp_history/?parcelid=1919427014

Once this is set up you just need to code your links from the other page to open in a new window:

<a href="http://developers.arcgis.com/javascript/samples/exp_history/?parcelid=1919427026" target="_blank">5190 Clarendon Crest Dr</a>
<br/>
<a href="http://developers.arcgis.com/javascript/samples/exp_history/?parcelid=1919427014" target="_blank">5157 Nob Hill Ct</a>