comp.lang.idl-pvwave archive - RDF feed
type: channel
description: Messages from Usenet group comp.lang.idl-pvwave, compiled by Paulo Penteado
items: Re: IDL and color table allocation

Re: IDL and color table allocation
type: item
description: I've had the same problem with IDL 4.0.1 flashing on a Sparc 10. Then one day, it mysteriously disappeared. RSI said something vague about the operating system, and to check with that. I couldn't solve it on my own either. -- Marv Frandsen
creator: frandsen
date: 1996-01-18T08:00:00-00:00

Re: IDL and color table allocation
type: item
description: daniele@saxpds2.tesre.bo.cnr.it (Daniele Dal Fiume) wrote: > > (I hope this is not a FAQ....) > > We have a DEC ULTRIX 5000/200 workstation, running IDL 4.0.1 > We notice an unpleasant problem: colors are flashing when we go in and > out of the graphic window (X11). This is due to the fact that IDL > allocates a private colormap, separate from that of the window manager. > The depth of the display is 24 bits. > > Does anybody know how to force IDL to use the same color map of the > window manager (mwm) on an ULTRIX workstation with a graphic display > whose depth is 24 bits? And how to limit it to only 256 colors? > (using "idl.colors: [-]256" in the app-default file is not working...) On our Sparc [2,10,20] systems we put the line: idl.gr_visual: PseudoColor You might try also: idl.gr_depth: 8 in the /usr/openwin/lib/Xdefaults file (or in a user's .Xdefaults file), and this seems to work. Here is our output from help, /device : IDL> help, /device Available graphics_devices: CGM HP LJ NULL PCL PS REGIS TEK X Z Current graphics device: X Server: X11.0, Sun Microsystems, Inc., Release 3300 Display Depth, Size: 8 bits, (1152,900) Visual Class: PseudoColor (3) Bits Per RGB: 8 Physical Color Map Entries (Used / Total): 223 / 256 Colormap: Shared, 223 colors. Translation table: Enabled Graphics pixels: Combined, Dither Method: Ordered Write Mask: 255 (decimal) ff (hex) Graphics Function: 3 (copy) Current Font: <default> Default Backing Store: Req from Server. IDL> We also issue a SET_PLOT, 'X' in the startup file. It sounds like you may have tried all this stuff already, so I don't know if this is useful. Dave Foster Brain Image Analysis Lab, UCSD foster@bial1.ucsd.edu
creator: David Foster
date: 1996-01-19T08:00:00-00:00