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Arcgis Online Geocoding service

MaheshReddy

Hi All,

I am looking for an online web service to get Lat, Long values for the addresses using Arcgis Online Geocoding service. Please let me know if there is any dll or online web service to get the results using .Net Framework 4.0 and Visual Studio 2010.

Thank you,

Mahesh

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AnttiKajanus1

You can use ArcGIS Runtime for .NET to access the Geocoding service but it needs 4.5 framework to work. If you have to stay on 4.0 framework, you could have a look our older ArcGIS Runtime for WPF SDK. It support using locators too.

MaheshReddy

Thanks for your reply.

While going through documentation, I found this link: http://geocode.arcgis.com/arcgis/rest/services/World/GeocodeServer/findAddressCandidates to get lat, long from the address provided. Can I use this link from .Net code?

If so, do I need to create a .Net wrapper for authentication and get token to get the results?

Yes, we have to use .Net framework 4.0 only. Is dll mandatory for using Geocoding service? Please let me know if there is any alternative way like using web services.

Thank you,

Mahesh

AnttiKajanus1

One option is to write the task logic by hand and access the rest endpoint from your own code. We provide existing tasks in our SDK's to communicate with the service but in some cases rolling your own implementation might be an option.

If you want to go that route, please refer ArcGIS REST API: World Geocoding Service documentation for rest spec and authentication details.

MaheshReddy

ArcGIS REST API should be good for my development purposes. As mentioned, I found following links: http://geocode.arcgis.com/arcgis/rest/services/World/GeocodeServer/findAddressCandidates?<PARAMETERS> and https://www.arcgis.com/sharing/oauth2/token?client_id=<YOUR CLIENT ID>&grant_type=client_credentials&client_secret=<YOUR CLIENT SECRET>&f=pjson for authentication and generating token.

Can you help me out with a sample .Net code to generate token? Thanks for your help.

SomeGISGuy

I know this is slightly off topic, but would just like to point out that .NET 4.0 is losing support on January 12, 2016:

https://support.microsoft.com/en-us/lifecycle?sort=pn&alpha=.net%20framework

So you only have a few months left before you have to upgrade anyway.

MaheshReddy

Thanks for the information. We are in the process of upgrading the framework.

dewright_ca

Ok, so you want the Lat/Long for the addresses you geocode? These attributes are exposed by either the REST or SOAP interfaces.

Or are you just wanting to Reverse Geocode the locations against that ArcGIS Online locator?

MaheshReddy

I want the Lat/Long for the addresses provided. I tried with the REST service and able to get the Lat/Long, but when countryCode alone is passed, I could not get the correct results.

Thad Tilton provided me code snippet, but I am looking for REST/SOAP url to get the correct results when only countryCode is passed.

Please check below:

I am using following url to get lat, long:http://geocode.arcgis.com/arcgis/rest/services/World/GeocodeServer/findAddressCandidates?Address=Starbucks&Neighborhood=&City=TanjongPagar&Subregion=&Region=&CountryCode=SGP&outFields=Addr_type&maxLocations=1&forStorage=false&f=pjson and able to get the results, when Address is provided along with Country.

But for some addresses, require Lat, Long for Country only. However, when I just input country code, the result is not correct. For eg.,

http://geocode.arcgis.com/arcgis/rest/services/World/GeocodeServer/findAddressCandidates?Address=&Neighborhood=&City=&Subregion=&Region=&CountryCode=SGP&outFields=Addr_type&maxLocations=1&forStorage=false&f=pjson.

Thank you.

dewright_ca

Using only a country code does not meet the needed minimums for a full reverse-geocode for all locations. The more information you include the more precise a result you get. When you pass in only a country code, you will get the center of mass for the polygon for that country.

MaheshReddy

We pass as much information as we have to get the lat/long for the addresses. For some addresses, we have only CountryCode without any other information. We should be able to get Lat/Long from the countryCode provided.

Is there a way we can get lat/long from location or extent below:

"candidates": [

{

"address": "Sgp",

"location": {

"x": -40.309738060999621,

"y": -20.310026429999596

"score": 100,

"attributes": {

"Addr_type": "POI"

"extent": {

"xmin": -40.314739000000003,

"ymin": -20.315027000000001,

"xmax": -40.304738999999998,

"ymax": -20.305026999999999

}

]

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