OGC Standards & New Web Map Services Which to Use When?
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1 OGC Standards & OGC Standards & New Web Map Services New Web Map Services Which to Use When? Which to Use When? Eamon Eamon Walsh Walsh CTO, CTO, eSpatial eSpatial January 2007 January 2007
Transcript of OGC Standards & New Web Map Services Which to Use When?
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OGC Standards & OGC Standards & New Web Map ServicesNew Web Map Services
Which to Use When?Which to Use When?EamonEamon WalshWalshCTO,CTO, eSpatialeSpatial
January 2007January 2007
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AgendaAgenda
1. New Web Map Services• Google, Yahoo, Microsoft…
2. Relationship to OGC
3. When to Use Which• With Examples
Conclusions, Questions…
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Web Map Sites Web Map Sites Google, Yahoo, Microsoft…Google, Yahoo, Microsoft…
Yahoo MapsYahoo Maps
MS Virtual Earth(MapPoint)
MS Virtual Earth(MapPoint)
Google MapsGoogle Maps
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MashMash--ups & Web Map Servicesups & Web Map ServicesGoogle / Yahoo / MS APIsGoogle / Yahoo / MS APIs
JavaScript APIs for Web PageCall Web Service from VendorGoogle Most PopularYahoo, Microsoft also availableFree for Free Use
Commercial offerings…
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Google EarthGoogle Earth
Excellent User Interface!• Fly Through…
Fetches Imagery and other Data from Google
Can add data…
Free Basic Version + Charged Commercial versions
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Google Earth #2Google Earth #2KML & Web ServicesKML & Web Services
KML is a file format read by Google Earth• Published• But defined by Google
“KMZ” is compressed KMLCan exchange as FileCan serve Dynamically to Google EarthGoogle Earth is NOT only Viewer – ESRI, NASA, …• But these also support
OGC standards…
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OGC &OGC & GoogleGoogle……
• Google Maps Service similar to OGC WMS
• & similar Web API available
• KML similar to OGC GML
• Exact copy in parts
• But simpler…
• KML services similar to OGC WFS
• Google Now a member of OGC
• Due to submit KML as standard…
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“Why Not Always Use Google “Why Not Always Use Google ––Its Free”Its Free”
Its Not Necessarily Free.
Its great for its purpose but not necessarily yours:• Its Branded…• Its limited - Functions,
Data…
Example…
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Web API to WMS Web API to WMS –– Open LayersOpen Layers
Integrate into any web application
But Need a WMS service with the data…
http://www.openlayers.org/
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New Services are Good Because… New Services are Good Because…
“Cool” Excellent User Interfaces! Have Data• BUT not always up-to-date• Or all the data you need
Easy to Integrate• “One Stop Shop” but also “One size fits all”
Free• But only in Free, Public, non-commercial sites –
With Branding & advertising from Map Provider
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OGC is Good Because… OGC is Good Because…
Standards agreed by GIS community…Being mandated for Government, INSPIRECan use your data• + Standards to Add and Edit Data• + Many Data Services
Supported by wide choice of Vendors• Including Open Source
Easy to IntegrateCustomise your application -• & No Branding nor advertising from vendor
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ConclusionsConclusions
Use Public Map Services to:• Create simple public free sites where branding
not an issue and maps can be “good enough”• Provide visualisation in Google Earth
Use OGC standards & supporting technologies to:• Provide richer functionality• Provide restricted or charged applications• Build or integrate custom applications• Integrate proprietary data – yours or partners
Format: KML becoming “open” …
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Conclusion & Thank YouConclusion & Thank You
Thank you for your time.
Contact:Eamon Walsh – [email protected]
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OGC Standards & OGC Standards & New Web Map ServicesNew Web Map Services
Which to Use When?Which to Use When?
EamonEamon WalshWalshCTO,CTO, eSpatialeSpatial
January 2007January 2007
