Replace opacity with ExtinctionCoefficient

[GoogleCodeExporter]

Hi,

just a suggestion. I had some missunderstandings with my colleagues who 
couldn't pin-point what I was referring to with "Opacity".


Regards
Christoph

Original issue reported on code.google.com by c.web...@yahoo.de on 12 Jun 2012 at 10:33

[GoogleCodeExporter]

Opacity, as in transfer function?

Please clarify.

Cheers,

Thomas

Original comment by TKroes81@gmail.com on 12 Jun 2012 at 10:42

[GoogleCodeExporter]

Exactly,  I did a complete replace all on opacity.
It seems consistent with my understanding of what it affects and how it is 
used, namely the accumulation of optical thickness, e.g. extinction SigmaT.

Original comment by c.web...@yahoo.de on 12 Jun 2012 at 3:48