Hasn't that already been explained here? Sign is entirely a matter of convenience and convention.My confusion is that I have some formulas to plug in these values, but it seems to me that if I use the wrong set of data, my zipcodes will be wrong too. I also don't understand why there is even such a difference. I can understand a few decimal points being different, but I don't understand how they are positive and negative, when it's supposed to be based upon the equator and the prime meridian.
--------------050301060807000700010804-- --=======AVGMAIL-444ED12E4910======= Content-Type: text/plain; x-avg=cert; charset=us-ascii Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Content-Description: "AVG certification" No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.4.6/323 - Release Date: 4/24/2006 --=======AVGMAIL-444ED12E4910=======-------Original Message----- From: Gmail User [mailto:nowuknow@stripped] Sent: Tuesday, April 25, 2006 6:03 AM To: mysql@stripped Subject: RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude) On Tue, 2006-04-25 at 00:43 -0700, Daevid Vincent wrote:So for a sanity check, I decided to look "online" and punchin some to seewhat the "real" lat/long should be. Well, different sitesgive differentvalues, and not only are they "slightly" off, but sometimes they're _positive_ or _negative_!? UGH!Not sure what your confusion is. It is a matter of notation. The negative value represents West where it is negative (as would be the East; note how there is no W mentioned there).