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Archives for: January 2012

Visits in the Night

January 8th, 2012  · stk

A ClustrMap|NASA Mashup

Twas the night before Christmas and all through the house, not a creature was stirring - except Scott, who was playing with PhotoShop! Sorry, but "Visits in the Night" isn't about Santa Claus coming down our chimney. It's about creating a "night-time" display using a satellite image from NASA, merged with our worldwide website visitors tracked on ClustrMaps.

Ever since November 2005, we've been tracking the locations of many of our randsco.com visitors by using an application developed by Marc Eisenstadt, called "ClustrMaps". (Hover the globe in "Site Tools" section of the sidebar, for the regular map thumbnail - like the one that also shows here). Since that time, we've logged over 2 million visitors!

When you click the globe in the sidebar (or the thumbnail above) you'll be directed to the ClustrMap website, which shows a much larger visitor map for our website (clicking on country regions shows even greater detail). Since inception, Marc and the ClustrMap team have been continually adding features to their service and they recently won "Best Free Web Tool" in the 2011 Edublog Awards.

Not long ago, when I clicked on the globe and went to the larger, world-wide map, I noticed that the dots showed first and that it took a few seconds for the underlying "map" to reveal itself. I thought, "The dots by themselves, make an interesting display." They reminded me of a NASA image I once saw, showing urban lights across the world at night. (The image below. Click it for an even larger version).

NASA Composite Satellite Image of World Lights at Night

Earth at Night: Lights from urbanized areas show up clearly on this NASA image (a composite of hundreds of images taken by orbiting DMSP satellites).

Our ClustrMap at Night

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Updated: 8-Jan-2012
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