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Integrating Geo Services with Arcgis Applications

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Integrating Geo Services with Arcgis Applications Integggrating Geo Services with ArcGIS Applications @AL_ Laframboise &@& @agup Agenda • Geo Services • Geolocation • Integrating with services • Social networking services • Future challenges Geo Services Any service that provides “geo” or “location-based” functionality Help solve the geolocation problem Geolocation Science of using applications, services & devices to solve a locationlocation--basedbased problem 1. Where we are (location) • Geoggpraphic coordinates • Areas (polygons) 2. What’ s around us • People • Places (geog rap hic features) • Businesses “Near me now” presents new challenges… 1. What is near me now? 2. Who’s near me now? 3. How do I find them? 4. What they saying? New dimensions of geolocat io n app licat io n development 5. How can I provide feedback? 6. How can I monetize it? Types of Geo Services • Traditional – Mapping – ArcGIS Online, Bing, Google, Yahoo – Geocoding – ArcGIS Online, Bing, Google, Yahoo – Places (POI) ––GeoAPIGeoAPI,, GeoNamesGeoNames,, Yahoo! GeoPlanet (WOEIDs) • LocationLocation--basedbased – Navigation and routing – Tracking – friends, family , traffic , vehicles – Information – yellow pages, advertising, emergency, weather • Social Networking and Crowdsourcing – Find and follow people around you – Twitter, Gowalla,Gowalla, Latitude – Rate and comment -Yelp,- Yelp, NextStop Geo Services in Action Finding your Location Satellite and Antenna Triangulation • GPRS • WiFi • GPS More options, more location aware devices HTML5 Geocode • W3C Geo API - embedded into Firefox 3.5 and later • Based on Google Location Services – Location providers (WiFi(WiFi,, IP…) • Inoperative until mandatory optopt--inin • TfUTerms of Use – Mozilla Privacy Policy, Google Privacy Policy navigator.geolocation.getCurrentPosition(function(position) do_something( position.coords.latitude, position.coords.longitude ); }); Windows 7 Sensor and Location Platform 1. Find or build a location sensor 2. Enable location on your Windows 7 platform 3. Consume Windows Location API ( .NET 4 .0 or C++) .NET 4.0 and Visual Studio RC 2010 Integrating with Services Consuming Services – ArcGIS Explorer Examples • Bing • Google • Panaramio • Yahoo • Yellow Pages • Image Geotagging ArcGIS Explorer Labs Programming with services 1. Locate the service 2. Review license, limitations and security requirements 3. Determine type ((GeoRSSGeoRSS,, REST, SOAP) 4. Resource representation (XML, Atom, JSON…) 5. Develop the application Accessing ArcGIS Services: Web APIs 1. Access the endpoint (service) 2. Execute Async request 3. Handle response Silverlight Example <esri:Map x:Name="MyMap" Extent="-120, 20, -100, 40" ><esri:Map.Layers> <esri:ArcGISTiledMapServiceLayer ID="StreetMapLayer" Url="http://server.arcgisonline.com/ArcGIS/rhttp://server.arcgisonline.com/ArcGIS/rest/services/ESRIest/services/ESRI_ StreetMap_ World_ 2D/MapServer" /> </esri:Map.Layers></esri:Map> Locator locatorTask = new Locator("http://sampleserver1.arcgisonline.com/ArcGIS/rest/services/" + "Locators/ESRI_Geocode_USA/GeocodeServer"); locatorTask.AddressToLocationsCompleted += LocatorTask_LocationsCompleted; private void LocatorTask_LocationsCompleted(object sender, AddressToLocationsEventArgs args) { if (args.Results.Count > 0) … Accessing GeoRSS Services: YahooWeather/Traffic 1. Access endpoint URL (no token) 2. Load XML syndication and parse ((DataSetDataSet)) 3. Convert to ArcGIS types http://api.local.yahoo.com/MapsService/rss/trafficData.xml?appid=YahooDemo&zip= private void YahooWeather() { DataTable dataTable = DataSource(txtYahooWeather.Text + _zipCode, "Yahoo Weather"); … CreateGraphic(lon, lat, title, description, symbol); } private DataTable DataSource(string URL, string serviceName) { DataSet ds = new System.Data.DataSet(); ds.ReadXml(URL); … longIndex = dataTable.Columns.IndexOf("long"); latIndex = dataTable.Columns.IndexOf("lat"); … Accessing Services: Bing Geocoder 1. Request token (requires account) 2. Access the endpoint (generate classes) 3. Execute Async request 4. Handle the callback 5. Convert data to ArcGIS types http://staging.dev.virtualearth.net/webservices/v1/geocodeservice/GeocodeService.svc private void btnGeocode_Click(object sender, EventArgs e) { _bingggyGeocoder.BingGeocodeAsync(txtQueryygString.Text); } void _bingGeocoder_BingGeocodeCompleted(object sender, GeocodeResultEventArgs e) { AddNote(new Note(result.Name, result.ArcGISExplorerPoint)); } Consuming REST - Javascript 1. Initialize the request 2. Add an event listener 3. Execute the request – GET/POST 4. Handle the callback 5. Parse results - JSON, XML, KML, etc 6. Remove the event listener http://search.twitter.com/search.json?q=devsummit esri.request({ url: xhrUri, handleAs: "json", callbackParamName: "callback", load: showFeed, error: handleError }); Accessing resources across domains GET/POST xhrRequest Web app GET/POST Web app X No cross-domain file Cross-domain and proxy solutions GET/POST Web app <crossdomain.xml> GET/POST Web app Proxy GET Social Networking and Crowdsourcing Services Twitter MicroMicro--blogging,blogging, messaging and networking platform • Post messages (status updates) • Follow others • Others can follow you Service for sharing information Anyone, Anything, Anywhere, Anytime, Any Device Examples of status messages - “tweets” I noticed a brush fire off the 10FWY south of the 91FWY interchange. Anyone dispatched yet? #LAFires Traffic accident off of the 38FWY near Big Bear Lake. #SoCalTraffic Anyone know where there’s still parking available for the baseball game tonight? #OregonEvents Pseudo‐geotweets Anatomy of a tweet What’s happening? Downtown LA. Traffic accident on I10. Backed up for 34.0636 miles. Anyone know how the I60 is? #Traffic ‐117.5922 To whom? Geolocation? Twitter Service APIs 1. Search – ATOM or JSON 2. REST 3. Streaming Free, s impl e, access f rom many cli ent s (HTTP) Authentication, rate limiting, whitelisting Learn more about the Twitter API GeoTagging Tweets • Applications can append coordinates • Users must geo-enable (opt-in) accounts string url = http://api.twitter.com/statuses/update.xml; string status = “At the Devsummit learning lots of cool things… #devsummit”; string request = string.Format("lat={0}&long={1}&status={2}", lat, lon, status); ‘ Geolocation enabled </user> <geo xmlns:georss="http://www.georss.org/georss"> <georss:point>34.056758 -117.196006</georss:point> </geo> </status> ‘ Geolocation not enabled </user> <geo /> </status> Learn more about geotagging tweets Geo-components of a status message <status> <created_at>Tue Mar 02 16:49:59 +0000 2010</created_at> <id> 9881885810</id > <text> At the Devsummit learning lots of cool things… #devsummit </text> <source>&lt;a href="http://tinyurl.com/agx" rel="nofollow"&gt;ArcGIS Explorer&lt;/a&gt;</source> <user> <id>15700862</id> <name>Allan Laframboise</name> <screen_name>AL_Laframboise</screen_name> <location>Redlands, California</location> <profile_image_url>http://a1.twimg.com/profile_images/669580624/al.jpg</profile_image_url> <followers_ count>540</followers_ count> <friends_count>546</friends_count> <time_zone>Pacific Time (US &amp; Canada)</time_zone> <profile_background_image_url>http://a3.twimg.com/profile_background_images/42048639/Redbull_Ram page.jpg</profile_background_image_url> <no tificati ons>f al se</ notifi cati ons > <geo_enabled>true</geo_enabled> <following>false</following> <statuses_count>615</statuses_count> <lang>en</lang> </user> <geo xmlns:georss="http://www.georss.org/georss"> <georss:point>34.056758 -117.196006</georss:point> </geo> </status> Search for and Geocode Tweets MultiMulti--stepstep process if (status.IsGeoTagged) { point = status.GetGeoPoint; 1. Geotag } else if (status.HasMobileCoords) { point = status.GetMobilePoint; 2. Mobile Location } else – iPhoneiPhone,, UT, -123-123°45°… { point = Geocode(status.Location); } 3. Location ( geocode) – Location e.g. New York Demo Development Considerations • Authentication ––oAuthoAuth,, xAutho vs Basic authentication • Rate limiting • Whitelisting Recent a dditi on of GdGeocode/Reverse geocoding support ! Use Cases: Twitter + Geolocation • Pull information (Geocoding(Geocoding)) – News – get realreal--timetime news/information by location and topic – Trends – events,,g can be location based e.g. flu trends… • Push information (Geotag(Geotag)) – News, weather, traffic, incidents… Learn more about tweeting your location Final Examples ArcGIS Explorer Twitter Extension • Features – Geocode twitter data – GGgeoTag – Search and search by radius – Build and share tweet maps (AGOL) • Technology – AGX Desktop – .NET AddAdd--inin – AGOL (base maps, sharing) – GNGeoNames – Twitter (REST, Search, XML, oAuth) Download AGX Extension ArcGIS JavaScript Twitter Client • Features – Place finder – Twitter opp(y)en search (by radius) – Geocoding – Drivetime polygons – EttExport to ..csvcsv • Technology – Web client – ArcGIS API for JavaScript, Dojo – AGOL, ArcGIS Server , GP and Geometry Service – Twitter – Bing – Proxy Developer Tips • JavaScript single threaded • Componentize your applications • Create DOJO classes • Use a proxy ArcGIS API for Flex • Features – Twitter search by radius – Automated search – Local caching and filtering – Clustering • Technology – Rich Internet Application ( RIA) – Sample Flex Viewer Widget – ArcGIS API for Flex – Twitter (Search API) – Basic authentication, encryption ArcGIS Desktop Add-in - TweetBase • Features – Data mining application – Log twitter data – Geocode – Full ArcGIS analyses/processing • Technology – Desktop/Server – .NET AddAdd--inin – Twitter – Bing – ArcGIS Server publishing Future challenges • Standardization – different databases and representations • Accuracy – geocoding vs geotagging • Management – crowdsourced data with existing data • GeolocationGeolocation--GISGIS integration services and applications • Geolocation privacy and security • Free vs fee - monetization Summary • Geo Services empower Geolocation • Many devices and technologies to choose from • Different ways to integrate services with ArcGIS • Social networking services provide geolocation support • Crowdsourced data can be extremely valuable Let’s build innovative GIS applications and services to help solve the Geolocation (near me now) problem..
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