using CELL monitor

GRASS GIS GRASS GIS developer
1

To be able to create high resolution (2000 x 2666) PostScript output to a
slidewriter, I uncommented the lines pertaining to the CELL monitor in
the monitorcap file and inserted CELL_HEIGHT and CELL_WIDTH values into
my .grassrc file. I then started the CELL monitor, set the region to
contain a very high number of cells, and issued display commands for
several map layers. Stopping the CELL monitor, I expected the newly
created raster map layer D_cell to have a 2000 x 2666 size, but it
didn't. It was only 640 x 480 cells in size. I suspect this must have
been hardwired in the CELL driver. Can anyone confirm this and supply a
method of changing these values?

P. Martijn van Leusen
Institute of Prehistory, University of Amsterdam martijn@scanner.frw.uva.nl

Martijn,
The variables in .grassrc are not automatically exported to your environment.
You can either set these environmental variables manually ( setenv CELL_HEIGHT
2666, etc., if you are running csh), or have them set automatically by
creating a .grass.cshrc file in your home directory with these variables
added to it (normally, copy your standard .cshrc to .grass.cshrc and edit it).

Regards,
--
Malcolm D. Williamson - GIS Specialist E-mail: malcolm@cast.uark.edu
Center for Advanced Spatial Technologies Telephone: (501) 575-6159
Ozark Rm. 12 Fax: (501) 575-3846
University of Arkansas
Fayetteville, AR 72701

2

I was a bit hasty in posting my previous message about the CELL driver. I
found that after you stop the CELL monitor, Grass needs some time before
a cell map called D_cell actually is created. I was using g.list rast
before D_cell was created, so I thought the driver mechanism was wrong...

Thanks for your comments, Malcolm!

P. Martijn van Leusen
Institute of Prehistory, University of Amsterdam martijn@scanner.frw.uva.nl