Bad contrast on XDRIVER24

[Phisan Santitamnont]

Dear GRASSers,

i have trouble with GRASS monitor when i
display a low-contrast grey image.

On Linux it gives only few color indexes which is
not enogh for this kind of  poor-contrast images.

i try to switch to 'float color mode'
and it is not possible on my LINUX
i got message
'Sorry, floating color table not available on this device'

well if my graphic device does not allow this.

I looked at
$GRASSHOME/src421/src/display/devices/XDRIVER_24/lib/color_supp.c

and saw

#define MAX_STD_COLORS 15


Is that the clue ?

Can anybody help me by changing to
higher value eg. 250.


Best Regards,

--
Phisan Santitamnont, Dr.-Ing.
Survey Engineering Department
Chulalongkorn University
Pathumwan Rd, Bangkok 10330
Tel. +66 (2) 218 66 61
Fax. +66 (2) 218 66 53
mailto:fsvpss at eng.chula.ac.th
http://www.sv.eng.chula.ac.th/Staff/Phisan