En Mon, 16 Nov 2009 11:11:20 -0300, Tommy Grav <tg...@me.com> escribió:
On Nov 15, 2009, at 11:08 AM, Gabriel Genellina wrote:
En Fri, 13 Nov 2009 16:05:26 -0300, Ronn Ross <ronn.r...@gmail.com>
escribió:
I'm attempting to convert latitude and longitude coordinates from
degrees
minutes and second to decimal form. I would like to go from:
N39 42 36.3 W77 42 51.5
to:
-77.739855,39.706666
decimal = degrees + minutes/60.0 + seconds/3600.0
N,E are positive; S,W are negative.
But the above numbers don't match.
It is more complicated than that. For negative numbers the value is
degrees -minutes/60. - seconds/3600.
And people always trip up on numbers that start with -00 :)
I set the sign of the result *after* computing it, so it doesn't matter.
py> 39 + 42/60.0 + 36.3/3600
39.710083333333337
py> 77 + 42/60.0 + 51.5/3600
77.714305555555555
Either the example above is incorrect, or there is another thing involved.
--
Gabriel Genellina
--
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