Friday, July 30, 2010

Recent updates to RI Digital Atlas map services

Over the several days, the URI Environmental Data Center completed significant server updates and reconfigurations that will help to better support the growing catalog of free online map services via the beta Rhode Island Digital Atlas (http://www.edc.uri.edu/atlas). Nearly all map services have been restored, including the popular Spring 2008 RI E-911 aerial photographs. The remaining map services will be continue to be brought online over the next few days.

One important change to note is that all map services available via the Atlas now use the WGS 1984 Web Mercator (Auxiliary Sphere) coordinate system (EPGS/WKID code 3857). If you use Esri ArcGIS software to access these map services, you will need to use version 9.3 or newer since this coordinate system isn’t supported by earlier versions. ArcGIS software users may need to drop and re-add any layers in your map documents that reference the older map services for them to work correctly. The coordinate system change was necessary to support the growth of the Atlas, but fortunately I don’t anticipate needing to change it again for quite some time unless if Google/Bing/Esri cook up something new!

I appreciate your patience over this transitory stage, and am looking forward unveiling more features for the RIGIS website and the Rhode Island Digital Atlas over the coming months. The best is yet to come!

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