In article QAA15964@camelot.es.anl.gov, sydelko@es.anl.gov (Pam Sydelko) writes
:
Does anyone know how to import IDRISI files into GRASS? I thought I saw
something on this list server that mentioned a r.in.idrisi command at one
time, but can't seem to track it down.Pamela Sydelko
Argonne National Lab
With IDRISI 4.0 (DOS version), I used the following method:
On the PC running Idrisi
- if files are compressed, use "CONVERT" to uncompress .IMG on IDRISI
(compressed files are not handled)
- in import/export menu run "GRASSIDR". Export in binary format
this will create 2 dir (cell + cellhd), each containing a file for the
same dir in grass data tree
On the unix machine running GRASS
- copy the 2 files created on your grass data tree
- if the size of the cell = 1 byte, its OK
- if the cell's size = 2 bytes, you must run
"dd if=<file in the cell dir> of=<other name> conv=swab" (byte order is diffe
rent)
and rename the resulting file to the original name.
- run r.support to verify header file (in cellhd) and add a color table.
In fact uncompressed binary .IMG files and uncompressed Grass files have same f
ormat
(except for byte ordering if cell are bigger than 1 byte) and as header files a
re in
ASCII, you can easely create with a text editor
Hoping this will help you,
----
Michel Wurtz - ENGEES, Strasbourg, France