VMD-L Mailing List

From: Luis Rosales (ludwig_at_biomedicas.unam.mx)
Date: Wed Nov 24 2004 - 16:35:55 CST

 
Hi Tatyana!

Maybe it´s a problem of your gamma value??? (i.e. the overall colors are
lighter than those of the vmd graphics window )

In POV 3.6, you set the gamma value with:

        global_settings { assumed_gamma 1.0 } // ithink that 1.0 is the
default value

Maybe you can play with the midpoint/offset of your gradient to get your
desired color gradient...
Hope this helps,

Luis

> -----Mensaje original-----
> De: owner-vmd-l_at_ks.uiuc.edu [mailto:owner-vmd-l_at_ks.uiuc.edu]
> En nombre de Tatyana I. Igumenova
> Enviado el: Miércoles, 24 de Noviembre de 2004 11:29
> Para: vmd-l_at_ks.uiuc.edu
> Asunto: vmd-l: Povray & color gradients
>
> Hi,
>
> Using vmd, I have colored methyl groups in my protein with BWR
> color gradient according to the values of NMR order parameters.
> When I used povray to generate a high-quality image, *some* of the
> gradient colors were not correctly represented in the final .bmp file,
> e.g. light pink methyls turned white etc. I got the same result when I
> used Tachyon.
>
> Are there any changes that I have to make in the scene files
> to faithfully
> represent the color gradients that I see in my vmd image?
>
> Thanks very much,
> Tatyana
>
>
> --
> Tatyana Igumenova, PhD.
> Department of Biochemistry and Biophysics
> University of Pennsylvania
> 423 Guardian Drive
> Blockley Hall, Room G-6
> Philadelphia, PA 19104
> Tel: 215-573-5969
>
>