Here is what I found in a quick search:
"Coordinates in the TIGER/Line® files are in decimal degrees and have
six
implied decimal places. The positional accuracy of these coordinates
is not
as great as the six decimal places suggest."
That is from near the bottom of page 6 of this document:
http://www.census.gov/geo/www/tiger/tigerua/ua2ktgr.pdf
Or are you referring to a different TIGER?
BTW Chris, I'm having a lot of trouble understanding your posts. I
don't know if others are running into the same thing, but much of the
time I'm not sure quite what you're getting at or what you propose as
many of these seem to be little snippets of thought instead of entire
thoughts... could explain a little more of what you have in mind?
Also: I looked at the postgis stuff you added, and... what's the
point? If it only works with postgres how is that useful for OFBiz?
-David
On Jul 2, 2008, at 4:31 AM, Chris Howe wrote:
In addition, TIGER road data is to 15 significant digits as is US
data for county political boundaries.
Chris Howe <[EMAIL PROTECTED]> wrote: Roland wrote: Hi David,
as I wasn't really sure about what to answer to your question, i
looked a bit
around:
http://geocoder.us/blog/2006/03/23/how-many-digits-are-enough/
if their data is correct: 0.000001 degrees are 4.37184 inch or
11.1044736
centimeters
that ought to be enough for everyone ;-)
seriously: I think for applications like mapping out addresses that
should be enough for years, but there may be other use cases i can't
imagine right now.
--Roland
640K ought to be enough for anybody. This reminds me of another
benefit to WTK/WTB. WTK and WTB are not dependent on the coordinate
system you are using. Whether your coordinate system is the
latitudinal and longitudinal circles of the earth or whether they
are the coordinate system of your RFID enabled warehosue, WTK and
WTB handles them the same. Same data format, same use of
projections, same reliability in application you build. Why record
the same type of information in 15 different formats based on their
use?
