Open Source Map APIs Yahoo, Google, Microsoft

Yahoo Map API Must have a Yahoo ID Application ID specific to application Simple API AJAX or Flash Implementation –50,000 queries per day limit Traffic API Geocoding API –5000 queries per day Local Search API Example: –

Google Map API Must have a Google ID Application ID specific to a folder (subfolders are cascaded) Geocoding –50,000 queries per day limit Add polylines or polygons Example: –

Microsoft Virtual Earth l=/library/en- us/VEMapControl/HTML/Introduction.asphttp://msdn.microsoft.com/library/default.asp?ur l=/library/en- us/VEMapControl/HTML/Introduction.asp Licensing????? Can access oblique imagery if available Access to routes/driving directions Geocoding Add polylines and polygons Interactive SDK – Example: –

Examples Leawood Crime Data – Johnson County Employees RSS Feeds Batch Geocoding

Conclusions Advantages –Free –Easy –Standard/recognizable format –Some value added options (traffic, weather, etc) –Geocode outside of county boundaries –Embed interactive map into a webpage Disadvantages –Speed (potentially slower) –Little layer control –Potentially out of date base layers –Could change to fee based service