|
|
| Re: making a color image [message #55771 is a reply to message #55770] |
Thu, 06 September 2007 11:18  |
Greg Hennessy
Messages: 45
Registered: November 2005
|
Member |
|
|
On 2007-09-06, David Fanning <news@dfanning.com> wrote:
> More brackets. :-)
>
> Try this:
>
> IDL> tv,[[[v]],[[r]],[[I]]]
That seems closer, since it tries to display an array of [4096,4096,3]
instead of an array of [4096,12288], but it still shows up as black
and white only.
Would I need to worry about a color table? I wouldn't have thought so,
but then I'm obviously thinking incorrectly since it Don't Work (TM).
|
|
|
|
| Re: making a color image [message #55772 is a reply to message #55771] |
Thu, 06 September 2007 11:04 |
Jean H.
Messages: 472
Registered: July 2006
|
Senior Member |
|
|
>
> 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.
try,
tv, [[[a]],[[b]],[[c]]], true = 3
Jean
|
|
|
|
| Re: making a color image [message #55773 is a reply to message #55772] |
Thu, 06 September 2007 11:13 |
Michael Galloy
Messages: 1114
Registered: April 2006
|
Senior Member |
|
|
On Sep 6, 11:49 am, Greg Hennessy
<greg.henne...@localhost.localdomain> wrote:
> 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.
Try:
IDL> device, decomposed=1
IDL, tv, [[[r]], [[g]], [[b]]], true=3
Mike
--
www.michaelgalloy.com
|
|
|
|
| Re: making a color image [message #55774 is a reply to message #55772] |
Thu, 06 September 2007 11:12 |
David Fanning
Messages: 11724
Registered: August 2001
|
Senior Member |
|
|
Greg Hennessy writes:
> 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?
Whoops! That one got away from me. (Too used to TVIMAGE!)
Try this:
IDL> TV, [[[v]],[[r]],[[I]]], TRUE=3
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
|
|
|
|
| Re: making a color image [message #55775 is a reply to message #55772] |
Thu, 06 September 2007 11:09 |
David Fanning
Messages: 11724
Registered: August 2001
|
Senior Member |
|
|
Greg Hennessy writes:
> 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?
More brackets. :-)
Try this:
IDL> tv,[[[v]],[[r]],[[I]]]
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
