KML Layers

2 methods:

• Live feed
• File upload

Cache feeds so that if Internet goes down they remain available.

Styling/Features example:

• ​http://crschmidt.net/mapping/kml

Need to handle network links

Need to unzip KMZ files

• Intercept the uploaded file before just saving to the DB: ​http://groups.google.com/group/web2py/browse_thread/thread/63809c06cac3b0d5

Need to catch a folder full of Network Links inside the Network Link!

We wish to display internal Features using KML feeds too (to avoid extra work).

• OpenLayers.Layer.Vector with Protocol.HTTP and Strategy.Fixed
• Control URL parameters from jQuery controls: ​http://fuzzytolerance.info/code/using-geoserver-openlayers-and-cql-filters/
• Popup content advanced options: ​http://www.mail-archive.com/users@openlayers.org/msg11117.html
  • Different content for Hover (e.g. Title) & Click (full HTML)
  • Load dynamically via AJAX

OpenLayers doesn't yet support GroundOverlay & ScreenOverlay:

• ​http://trac.openlayers.org/ticket/1567
• Example of Parsing the KML, extracting the GroundOverlay to display as Image Layer
  • Example 8 on ​http://gis.ibbeck.de/ginfo/apps/OLExamples/Index/index.html

NB This is separate to the KML Import/Export

CSV to KML Converter

• ​http://code.google.com/apis/kml/articles/csvtokml.html
• Useful to extend to handle images (multiple images => Tabs)

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GIS BluePrints