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On Wednesday 28 January 2004 17:25, Patrick J. Carroll wrote:
>          Of course, the better way to draw unit cells would be the
> capability to read shelxl .res files (which was introduced into Jmol with
> version 7). These files have all the necessary information. Unfortunately,
> Jmol 7 has a bug that reads the cell angles incorrectly (Jmol reports
> alpha, beta, gamma as beta, gamma, alpha). Jmol 8 has an additional bug in
> that it represents the cell angles in radians rather than degrees. 

How does this bug manifest itself?

> So the
> Jmol 7 application will only display a correct unit cell for orthogonal
> cells (all cell angles 90 degrees). But the Jmol 7 applet does not have the
> capability of displaying "original atoms only" (as the application can) and
> so it will not draw any atoms that are outside the boundaries of the cell.

Patrick,

I'm sorry that I have not fixed this yet... I've been quite busy with other 
projects in my PhD.

I would very much appreciate your help with debugging it... The ShelX code 
comes from CDK (cdk.sf.net), and apparently I did something wrong in the 
conversion from notional coordinates and cartesian coordinates, and visa 
versa... 
There are some tests which should make sure the code is doing things 
correctly:

http://cvs.sourceforge.net/viewcvs.py/cdk/cdk/src/org/openscience/cdk/test/geometry/CrystalGeometryToolsTest.java

Sorry for the long link... 

Download version 1.5 (with comments) or 1.4 (without comments) what is 
tested...

I would highly appreciate if you could have a look at the tests and see if 
there is anything out of order...

>          So for drawing unit cells right now, I don't need anything added
> to the hbond functionality, but it would be nice to fix the shelxl.res
> bugs.

I will try to do this asap.

Kind regards,

Egon Willighagen


- -- 
[EMAIL PROTECTED]
PhD on Molecular Representation in Chemometrics
Nijmegen University
http://www.cac.sci.kun.nl/people/egonw/
GPG: 1024D/D6336BA6

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