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Lars Rasmussen , Brian McClendon, the Google maps developers

Tuesday, 13. June 2006, 22:56:18

How cool is this? Sitting front and center listening to Lars Rasmussen , Brian McClendon, THE Google maps developers. In their 15 minute power presention they recall how they first saw what ESRI was trying to address but looked at it in an open standards environment. Their solution is KML… think of it (KML) as the PDF of GIS. In the words of McClendon, KML is a self-contained XML describing geospatial content and its presentation.. wanting to make it easier to publish geospatial data, particularly large datasets - hence, the PDF of GIS or, think of KML as the html or webmapping.
New, important features in GE 4 include regions models. Regions... specify a box (width and height) enabling only the data that the user is looking at to be seen. Combine this with level of detail information… i.e. only display a type of data when the viewer is zoomed in at a minimum level of scale. The Demo... we see a series of DOQQs for areas of San Francisco (2.5 GB of data), then quickly toggle between imagery from various dates to get an idea of the temporal relationship and change in the landscape over time. The images update/change within Google Earth amazingly fast as a result of the efficiency of KML to carve it up into manageable pieces of information sent to the display…cool! The goal... providing large datasets that already exist.Lars Rasmussen , Brian McClendon - these guys created Google Maps!

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