List: General Discussion « Previous MessageNext Message » From: David (SST - Adelaide) Logan Date: April 26 2006 1:54am Subject: RE: Calculate LONG/LAT from ZIP+4 (positve vs. negative longitude) View as plain text
You could further explain the lats and longs being "slightly off" by the
use of a different datum. There are many many datums utilised by
different geographical/geological authorities. This difference could
become quite large dependent upon the datum used.

As gmail user as noted, negative = West and South, positive = North and
East.

Regards
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********** _/     **********  David Logan
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*****    _/            *****  Hewlett-Packard Australia Ltd
****    _/_/_/  _/_/_/  ****  E-Mail: david.logan@stripped
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******      _/      ********  Postal: 148 Frome Street,
********   _/     **********          Adelaide SA 5001
Australia
i    n    v    e    n    t
---------------------------------------------------------------

________________________________

From: Peter Brawley [mailto:peter.brawley@stripped]
Sent: Wednesday, 26 April 2006 11:17 AM
To: Daevid Vincent
Cc: mysql@stripped
Subject: Re: Calculate LONG/LAT from ZIP+4 (positve vs. negative
longitude)

Daevid Vincent wrote:

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.

Hasn't that already been explained here? Sign is entirely a matter of
convenience and convention.

PB

-----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 punch

in some to see

what the "real" lat/long should be. Well,
different sites

give different

values, 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).

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