>>It is actually rotating as if the +Y axis is pointing upwards ... at >> least that is what it looks like to me. >> >>rotate x <degrees> & rotate y <degrees> behaved as I expected. > > Rotate should rotate the molecule relative to screen axes. The sign of > the rotation is critical. To determine that you must have ball and > stick or spacefill showing. If your Y axis is down the screen and you > apply a positive rotation I would expect the atoms nearest to you to > rotate leftwards and the ones farthest away to rotate rightwards. This > is a clockwise rotation about a Y axis down the screen.
I agree, that is what I expected. What I observe in RasMols is that a positive rotation about the y axis: rotate y 20 moves the close atoms to the right and the far atoms to the left ... the opposite of what you describe. > It will help you to get a small molecule which you understand. It will > further help to make a physical molecular model. You can compare this > with what happens on the screen. In all cases it must be superimposable > with the screen molecule or you will have changed the chirality - not > allowed. If you don't have models use an orange with 4 cocktail sticks > and four atoms of different colours. Create a file for a molecule like > HC(F)(Cl)Br which is a tetrahedron. If you don't have that the > coordinates are > 1 1 1 > -1 -1 1 > 1 -1 -1 > -1 1 -1 Yes. I have been using a 'molecule' with 7 unique atoms ... origin + unit vectors along the +/- axes. Nitrogen=North, Sulphur=South, Florine=Far, Carbon=Close, Oxygen=West (oueste in spanish), Chlorine=East (?), Hydrogen = origin ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Jmol-developers mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jmol-developers
