Monday, November 28, 2011

Google Mapplet to readout UTM coordinates

This Google Maps tool was written to show the local Universal Transverse Mercator (UTM) easting and northing values of any clicked point on Google Maps.

To use this tool,
  1. Simply open up any Internet browser and 
  2. Go to http://dominoc925-pages.appspot.com/mapplets/cs_utm.html.
  3. Then click on any location on the map.

    An info window pops up showing the easting and northing values.
If necessary, the Standard Molodensky transformation is used to transform a position between Google Maps' WGS84 datum and the user defined reference datum. The ellipsoid and datum transformation parameters are taken from the University of Colorado site http://www.colorado.edu/geography/gcraft/notes/datum/edlist.html. 

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