Hmmm, sounds like a bug. What happens (as of version 1.0.11) in
orthogonal dimensions is that an extra half point of thickness is used
both for displaying and selecting peaks. At least that's the theory.
(And this is in addition to whatever thickness you might have added in the
peak "find params" dialog.) This extra half a point was added because of
the problem that interpolation to find the peak maximum can cause the
position to be up to half a point from the grid point, and this could mean
that peaks being picked might not be shown. But if you are able to not
see something but can pick it then that sounds like a bug. How many
points in the z direction in the HSQC-NOESY is 0.2 ppm equal to?
Wayne
On Mon, 21 Aug 2006, Christoph Brockmann wrote:
> Hi there,
>
> I just found that I have some problems selecting the correct peak
> (either by clicking or for assignment by hitting 'a') in a 3D
> HSQC-NOESY while looking at the 'HSQC-like' planes. Although I made the
> Z slice as thin as possible, analysis keeps randomly selecting peaks in
> Z-planes up to 0.2 ppm off (although the peaks are not even visible in
> the plane I am looking at).
>
> Is there a way to stop it from doing this?
>
> Thanks,
> Christoph
>
> --
> ---------------------------------------------------------
> Dr. Christoph Brockmann
> Division of Structural Studies
> MRC Laboratory of Molecular Biology
> Hills Road
> Cambridge, CB2 2QH
> phone: +44-1223-40-2261 or +44-1223-40-2068
> e-mail: [log in to unmask]
> ---------------------------------------------------------
>
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