From: John Stone (johns_at_ks.uiuc.edu)
Date: Wed Sep 18 2019 - 10:18:52 CDT
Hi,
As I mentioned, this is a feature in the new test versions of VMD 1.9.4,
so you'll need to download the new version to get both the support for
alpha channel (transparency) and PNG image file format, both of which
are required for this feature. Try one of the VMD 1.9.4 test builds and
let us know if you need further help.
Best,
John Stone
vmd_at_ks.uiuc.edu
On Wed, Sep 18, 2019 at 11:14:28AM -0400, jiali wang wrote:
> Dear John,
> Thank you so much for your reply. I am using ubuntu system with VMD
> 1.93. I am trying to use TCL console to type the command you provided.
> it's says:
> Info) Rendering current scene to 'alphachannel.png' ...
> ERROR) Unrecognized image file extension, writing Targa file.
> OptiXDisplayDevice) Total rendering time: 0.19 sec
> Info) Rendering complete.
> But, I found I can not open the output file. after I change the file type
> to TAG, I could open that, but it shows no transparent background
> effect?
> Do you know what happened??
> thank you so much for your help!
> best regards,
> JIali
-- NIH Center for Macromolecular Modeling and Bioinformatics Beckman Institute for Advanced Science and Technology University of Illinois, 405 N. Mathews Ave, Urbana, IL 61801 http://www.ks.uiuc.edu/~johns/ Phone: 217-244-3349 http://www.ks.uiuc.edu/Research/vmd/
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