| W.D.C.A.P.H. 
 
 
 Member Since: 19 Feb 2010
 Location: Stonehenge
 Posts: 310
 
  
     | From Wiki :-  Article
 Conversion from DMS to Decimal Degree
 Given a DMS (Degrees, Minutes, Seconds) coordinate such as W87°43'41", it's trivial to convert it to a number of decimal degrees using the following method:
 
 Calculate the total number of seconds, 43'41" = (43*60 + 41) = 2621 seconds.
 The fractional part is total number of seconds divided by 3600. 2621 / 3600 = ~0.728056
 Add fractional degrees to whole degrees to produce the final result: 87 + 0.728056 = 87.728056
 Since it is a West longitude coordinate, negate the result.
 The final result is -87.728056.
 
 Conversion from MinDec to Decimal Degree
 Given a MinDec(Degrees, Minutes, Decimal Minutes) coordinate such as 40°26.7717N, 79°56.93172W, it's trivial to convert it to a number of decimal degrees using the following method (for example for 79°56.93172W):
 
 The integer number of degrees is the same (79)
 The decimal degrees is the decimal minutes / 60 (56.93172/60 = 0.948862)
 Add the two together (79 + 0.948862 = 79.948862)
 Negate the value if it is South or West (in this case, West, so -79.948862) We Don't Care About Pot Holes !!
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                |  20th Aug 2010 3:53 pm |  |