Changing Locator Properties

Question

Hi,

The default minimum candidate score is too high for the Geocode Server I am using. I want to lower this. This seems like it should be easy, how can I accomplish this?

Thanks

JMcNeil · Answer

David,
Sorry I think you are stuck with the Minimum match score and I don't think you can override it but I've been wrong in the past (many times a day; everyday).  As we discussed in the beginning of this thread I think this is set when the Address Locator is created and if you don't own the address locator/geocoding service then you are at the mercy of the ESRI or whoever owns it.

If you don't want to use bing I would suggest the serving one or if you don't have those capabilities maybe you can find a different one to consume with a lower score.  By the looks of you address it looks like you are in the State of Indiana?

I did a quick search for you and couldn't find a geocoding service but in two minutes I did find other public services so maybe with the help of Google and more time you could get your hands on something that is ESRI based

Local universities
http://gis.uits.iu.edu/ArcGIS/rest/services
http://igsmap1.indiana.edu/wmsconnector/com.esri.wms.Esrimap?ServiceName=MAP SERVICE

Or the state, your county or city, or the Department of Transportation, Department of Fish and Game, etc.

Here's a good link of some of the Maps and GIS Resources in the United States, by State but I know there are more out there.
http://libweb.uoregon.edu/map/map_section/map_Statedatasets.html

Sorry I wasn't more helpful.
Jay

DavidBrown6 · Answer

Jay,

The problem isn't me wanting to filter results that are returned from the server after the find. I am already doing that. The problem that I am having is that the server will only provide me with candidates that have a score higher than what the minimum allowable score is set to.

Here is my problem:
1) Go to the Geocode Server your link points to. 
2) Type in Civic Sq, Carmel, IN.
3) You won't get any results.

I was thinking that if there was a way to lower the minimum score and thus return more results, I may have found a way to use that same server and be able to enter addresses in without numbers.

Maybe I just need to use Bing's Geocoding Service, but if there is another way to use only ESRI I would prefer that.

JMcNeil · Answer

David,

I think you can just get the candidate.score and then write a simple if else or something.  If you hit the rest endpoint of that geocoding service and try to search for an address you see it comes back with a score.  Here's a link to the an esri geocodeserver end point...put in an address and search and you will see a score is returned.

http://tasks.arcgisonline.com/ArcGIS/rest/services/Locators/TA_Streets_US_10/GeocodeServer/findAddressCandidates

Grab that score and compare it to the value you want it to be greater than.

I think you are after a snippet of code like this, which I took from the SDK interactive api here:

http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#AddressToLocation
   
private void LocatorTask_AddressToLocationsCompleted(object sender, ESRI.ArcGIS.Client.Tasks.AddressToLocationsEventArgs args)
        {
            _candidateGraphicsLayer.ClearGraphics();
            CandidateListBox.Items.Clear();

List<AddressCandidate> returnedCandidates = args.Results;

foreach (AddressCandidate candidate in returnedCandidates)
            {
                if (candidate.Score >= 80)
                {
                    CandidateListBox.Items.Add(candidate.Address);

Graphic graphic = new Graphic()
                    {
                        Symbol = LayoutRoot.Resources["DefaultMarkerSymbol"] as ESRI.ArcGIS.Client.Symbols.Symbol,
                        Geometry = candidate.Location
                    };

Jay