[GRASSLIST:2156] Re: Where's the data within a cell?

[Rich Shepard]

On Thu, 26 Jul 2001, Glynn Clements wrote:

> The UL[XY]MAP values in the .hdr file are of the centre of the top-left
> cell.

Glynn,

  This answers my question: the geographic location is in the center of the
cell.

  FWIW, I'm working with 7.5-minute (30 m) dems, not the 3-arc second ones.
But, I assume the geographic location is the same: cell center.

  In Idrisi (which I used many years ago), I believe the geographic
reference was the lower-left corner of each cell; I don't recall how EPPL-7
did it.

Thanks very much,

Rich

Dr. Richard B. Shepard, President

                       Applied Ecosystem Services, Inc. (TM)
            2404 SW 22nd Street | Troutdale, OR 97060-1247 | U.S.A.
 + 1 503-667-4517 (voice) | + 1 503-667-8863 (fax) | rshepard at appl-ecosys.com
                 Making environmentally-responsible mining happen.