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Nancy Greeley
ngreeley at hanover-crrel.army.mil
Fri Jul 10 17:14:31 EDT 1992
Hello. Seems like I'm speaking more to you lately than to anyone else...
The task: to create a database that contains (to start) the outline of Alaska
& a maplayer showing some hydrologic features. I am presently just trying to
get the outside boundaries of Alaska into the database.
The data source: My first attempt has been to use USGS-DLG3 data (optional format).
?'s include:
1) Does anyone have Alaska in a GRASS format already?(dream on, N.)
2) Alaska covers 10 UTM zones. I have seen GRASS-mail that
indicated that you can get away with combining 2 zones, but only if you could
live with the distortion on the edges. 10 zones in one map sounds impossible.
Do I have to divide Alaska into 6 oversized UTM zone sections, with each
section in a mapset?
3) Do I have to use UTM in GRASS? I have heard that GRASS is weak in
lat-long. Does that mean I could produce maplayers in lat-log but couldn't
do much manipulation? Would it be wise to do this Alaska map in lat-long?
Is there a list available of what GRASS commands work and what don't work
in lat-long?
Thank you for your time!
Sincerely,
Nancy H. Greeley
>.........................................................*.............<
! .....................................................*.......*....... !
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! Nancy Humiston Greeley, GIS Coordinator * * !
! USA Cold Regions Research and Engineering Lab * !
! 72 Lyme Road * !
! Hanover, NH 03755 * !
! Phone: 603-646-4582 Fax: 603-646-4278 * * !
! Email: ngreeley at hanover-crrel.army.mil * !
! * * !
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