| making a color image [message #55776] |
Thu, 06 September 2007 10:49 |
Greg Hennessy
Messages: 45
Registered: November 2005
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Member |
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I have three 8 bit images in three filters that I want to display as a
"true color" image. My workstation should be able to handle it.
IDL> help,/device
Available Graphics Devices: CGM HP LJ NULL PCL PRINTER PS REGIS TEK X Z
Current graphics device: X
Server: X11.0, The X.Org Foundation, Release 70000000
Display Depth, Size: 24 bits, (1280,960)
Visual Class: TrueColor (4)
Bits Per RGB: 8 (8/8/8)
Physical Color Map Entries (Emulated / Actual): 256 / 256
Colormap: Shared, 16777216 colors. Translation table: Bypassed
Graphics pixels: Combined, Dither Method: Ordered
Write Mask: 16777215 (decimal) ffffff (hex)
Graphics Function: 3 (copy)
Current Font: <default>, Current TrueType Font: <default>
Default Backing Store: Pixmap.
When I try what I think should work:
IDL> tv,[[v],[r],[i]]
what is displayed is black and white only. I *used* to know how to do
this 15 years ago when I had an IVAS, but haven't done it with a
workstation. I'm probably missing something obvious, but what?
Thanks.
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