W8CXO asked if anyone has "a good way to locate co-ordinates...etc"
Bill,
It would be helpful if you stated your map objective a bit more
thoroughly. Do you want to take some existing coordinates and mark them
on an existing map? Or alternately, do you want to point to some location
on an existing map and determine the precise lattitude and longitude?
As you will note, there is considerable difference in those two
possibilities, and your words don't describe sufficiently which one you
are after.
If you want to take existing coordinates...the solution KL7HF suggested
will work. It is just a matter of much precise 'mechanical drawing' grunt
work.
If you want to point to some location on an existing map...etc, then
determine what that point's lattitude & longitude is, you would reverse
the process above, or better yet, get a GPS and go to that location to
read the coordinates.
You didn't state why you wanted resolution down to 'seconds', so an
obvious question is why do you need that kind of resolution? What kind
of resolution do you need in feet/inches or meters/cm??
There is CONSIDERABLE information in the search engines on Topo maps,
USGS info, lattitude/longitude. I didn't see anything there after
messing around for 30 minutes or so that explained how to do what
interests you though. Too much data to sort through.
Good luck
73
Dale K5MM
At 10:19 PM 8/17/97 -0400, you wrote:
>Hi:
>Does anyone have a good way to locate exact co-ordinates (deg,min,sec)
>on a USGS topo map ?
>
>Bill W8CXO
>
>
>--
>FAQ on WWW: http://www.contesting.com/towertalkfaq.html
>Submissions: towertalk@contesting.com
>Administrative requests: towertalk-REQUEST@contesting.com
>Problems: owner-towertalk@contesting.com
>Search: http://www.contesting.com/km9p/search
>
>
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: owner-towertalk@contesting.com
Search: http://www.contesting.com/km9p/search
|