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Re: How to directly write figure to png without open x-window in IDL5.4? [message #32839 is a reply to message #32837]

Wed, 13 November 2002 13:38

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Ninghai Sun (ninghai@whidc.com) writes:

> Now, I first write to PS and then convert to png in cronjob. No
> problem in linux. But if logout of Linux when the idl code is running,
> always get error that no x-window is opened. Any idea how to figure it
> out?

Use the Z-buffer for a window.

thisDevice = !D.Name
Set_Plot, 'Z'
LOADCT, 5 ; of whatever you do to load colors
TVLCT, r, g, b, /GET
Device, Z_Buffer=0, Set_Resolution=[400, 300] ; or whatever
TV, image ; Or, whatever graphics you display
snapshot = TVRD()
Set_Plot, thisDevice
Write_PNG, 'myfile.png, snapshot, r, g, b

Cheers,

David
--
David W. Fanning, Ph.D.
Fanning Software Consulting, Inc.
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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[Message index]

		Re: How to directly write figure to png without open x-window in IDL5.4? By: ninghai on Thu, 14 November 2002 06:47
		Re: How to directly write figure to png without open x-window in IDL5.4? By: Craig Markwardt on Wed, 13 November 2002 20:24
		Re: How to directly write figure to png without open x-window in IDL5.4? By: David Fanning on Wed, 13 November 2002 13:38

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