There is a little difference between Nad 83 and WSG84,
but not a whole lot.
Sometimes the same point may be figguerd in two different
That is a problem where I live.
Arkansas is devided into two different Lambert Projections.
The projections are called "North Zone" and "South Zone".
The two zones meet in Little Rock, Arkansas. If you traverse
from zone to zone, you can have problems. Or if tha coords
for one spot are calculated with the wrong zone, there will
be a problem.
Don't know if that effects what you are doing, but it is some
thing ta think about.
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