Old columns of mine (including Uzbekistan) can be
downloaded (for free) from the "Grids and Datums" section
at:
http://www.asprs.org.resources.html
Be careful what you say in public (over the internet) about
System 42. It is still a State Secret in your country, and
the authorities are strict about that topic.
Another site that could help you is the U.S. military
mapping organization (it is unclassified, and available to
anyone over the internet).
http://www.NIMA.mil
Lots of stuff can be downloaded for free (from that site)
in regard to WGS84 Datum relations with other "Local"
Datums like System 42.
Clifford J. Mugnier ([EMAIL PROTECTED])
The Topographic Engineering Laboratory
Department of Civil and Environmental Engineering
UNIVERSITY OF NEW ORLEANS
New Orleans, Louisiana 70148
Voice and Facsimilie: (504) 280-7095
-
On Thursday, 17 February, 2000 3:52 AM, 52 [SMTP:52@mail
.ru] wrote:
Hello List,
Can any body explain to me what is datum, and where can i
change it in
MapInfo. As i undestand datum transformatin needed only
when i want to
jump from one ellipsoid to another. Is it right?
I've found some information about datum i need (Pulkovo
1942) in
LocalCoordSysDefs.fme file (Bursa transformation as i
understood), but shifts there are slightly different
from these that i got from another source, i know that
datums are
being changing with time, but where can i get recent
information.
I have following problem. I get some data that was made
with some
datum (is there any need to include one when creating a
layer), so
after importing it into Mapinfo i have certain coords
shift. What can i do?
Is there any understandable source of imformation about
datums?
--
Best regards,
Sim D.
Biodiversity Conservation Center, Moscow
GIS Dept. ++7(095)-124-7934
mailto:[EMAIL PROTECTED]
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