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| GeoCommunity Mailing List |
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| Mailing List Archives |
| Subject: | Re: [gislist] SUM: GRID Tables |
| Date: |
11/08/2005 07:50:01 AM |
| From: |
Hugo Ahlenius |
|
|
| You could use the zipcode approach to make one single
| grid:
|
| ELEV + (ASPECT *10) + (SLOPE * 100) + (LANDCOVER * 1000).
Sarah's approach requires that there are maximum 9 classes for each
layer though -- is that what you have? If you are using ArcInfo GRID, a
grid dataset can actually have multiple values for each cell -- you
would use the "combine" command for that (you just have to watch so that
there are not too many combinations, then it will bail out, you can
solve that by slicing the slope and elevation to classes). That method
doesn't work on floating point grids though.
/H.
--
Hugo Ahlenius
-------------------------------------------------------------
Hugo Ahlenius E-Mail: hugo.ahlenius@grida.no
Project Officer Phone: +46 8 412 1427
UNEP GRID-Arendal Fax: +46 8 723 0348
Stockholm Office Mobile: +46 733 467111
WWW: http://www.grida.no
Skype: callto:fraxxinus
PLEASE NOTE: NEW PHONE AND FAX NUMBERS FROM SEPT 1ST 2005
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