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From:Jay Blanchard Date:April 25 2006 4:29pm
Subject:RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)
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[snip]
I procured myself some zip/lat/long databases from various places. Then
I
noticed that for the same zip code, I got different values in different
databases??!!!
[/snip]

Latitudes and longitudes are often represented based on their location
relative to the equator and the prime meridian;

                      |
             pos lat  | pos lat
             neg long | pos long
                      |
                      |
---------------------------------------------------
                      |
             neg lat  | neg lat
             neg long | pos long
                      |
                      |

Sometimes the coordinates are based on positive distances (non-standard
lat/long) from the prim meridian and equator, yielding a pai of positive
numbers for each coordinate that would not be the same numbers as given
by the standard system.

Google Maps understands the standard system well, I do not know if it
understands the non-standard system
Thread
Calculate LONG/LAT from ZIP+4Jack Lauman27 Jun
  • Re: Calculate LONG/LAT from ZIP+4Scott Gifford27 Jun
    • Re: Calculate LONG/LAT from ZIP+4Brian Dunning27 Jun
      • Re: Calculate LONG/LAT from ZIP+4Scott Gifford27 Jun
        • Re: Calculate LONG/LAT from ZIP+4Brian Dunning27 Jun
          • Re: Calculate LONG/LAT from ZIP+4Scott Gifford27 Jun
            • Re: Calculate LONG/LAT from ZIP+4Brian Dunning27 Jun
  • Re: Calculate LONG/LAT from ZIP+4Kieran Kelleher28 Jun
  • Re: Calculate LONG/LAT from ZIP+4Mattias Håkansson28 Jun
    • Re: Calculate LONG/LAT from ZIP+4Kieran Kelleher28 Jun
      • Re: Calculate LONG/LAT from ZIP+4Brian Dunning28 Jun
        • Re: Calculate LONG/LAT from ZIP+4Kieran Kelleher28 Jun
    • Re: Calculate LONG/LAT from ZIP+4Brian Dunning28 Jun
      • RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)Daevid Vincent25 Apr
RE: Calculate LONG/LAT from ZIP+4Dirk Bremer28 Jun
RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)Gmail User25 Apr
  • RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)Daevid Vincent25 Apr
RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)Gmail User25 Apr
  • RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)Tim Lucia25 Apr
RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)Nicolas Verhaeghe25 Apr
RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)Jay Blanchard25 Apr
  • Re: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)Webmaster25 Apr
  • RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)Daevid Vincent25 Apr
RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)Jay Blanchard26 Apr
Re: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)Peter Brawley26 Apr
  • RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)SST - Adelaide)26 Apr
    • RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)Nicolas Verhaeghe26 Apr
RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)Nicolas Verhaeghe26 Apr
  • Re: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude) \"Adam i Agnieszka Gąsiorowski FNORD aka ALinkA aka symbol '( { .A. } )'' ||~> { A.A }\" 2 May
    • RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude)Gary M. Allen3 May