I have GRASS running wonderfully on Linux, which I recently upgraded to
the kernel 1.2.13, running X11R6, all from the October distribution of
Slackware. I upgraded to use more than 8-bit pseudo-color under GRASS for
photorectification.
As long as I run 8-bit colour, I can get good 8-bit grayscale quite
happily for my photos. Unfortunately I have to use d.colormode float,
which gets irritating remarkably rapidly.
When I run X in 16-bit (non-pallette) colour, it comes back with the
rather unremarkable error about being unable to allocate a colour pallette.
I am unable to recall the exact wording, but it suggests to me that I
need to re-compile d.mon or XDRIVER to accept direct-addressing colour.
Any disagreement?
Please tell me you've already solved this one and I just need to follow
steps 1 to 18 to solve it myself. I'm not a good programmer and want to
avoid hacking XDRIVER (quite reasonably, I think).
Thanks,
Angus Carr
Hi, Angus
You'll have to post us when you finish your hacking! ;^) XDRIVER is truly
an 8-bit color driver. The only hack I know of is one that permits it to
run on a 24-bit display, but still only displaying 8-bit color (sorry, I
can't remember the author's name right off the top of my head 
). This
works nicely, but doesn't do what you, and many others, would like. So,
have at it! (Or buy an SGI!)
-Malcolm
--
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) 575-5218
University of Arkansas
Fayetteville, AR 72701
On Tue, 12 Dec 1995, Angus Carr wrote:
I have GRASS running wonderfully on Linux, which I recently upgraded to
the kernel 1.2.13, running X11R6, all from the October distribution of
Slackware. I upgraded to use more than 8-bit pseudo-color under GRASS for
photorectification.
As long as I run 8-bit colour, I can get good 8-bit grayscale quite
happily for my photos. Unfortunately I have to use d.colormode float,
which gets irritating remarkably rapidly.
When I run X in 16-bit (non-pallette) colour, it comes back with the
rather unremarkable error about being unable to allocate a colour pallette.
I am unable to recall the exact wording, but it suggests to me that I
need to re-compile d.mon or XDRIVER to accept direct-addressing colour.
Any disagreement?
Please tell me you've already solved this one and I just need to follow
steps 1 to 18 to solve it myself. I'm not a good programmer and want to
avoid hacking XDRIVER (quite reasonably, I think).
Thanks,
Angus Carr