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On 03/12/10 08:06, Alistair Irvine wrote: > Hi, > > I'm having a problem that my 3D data seems to often create a second set of contour lines in my 3D data. The extra contours overlay approximately with the original contours, but not precisely, resulting in rather messy looking peaks. > > Does anybody know what would be causing the duplication of contours? > The problem seem to happen fairly randomly upon certain operations. For example, if I load a 3D spectra into a window of x=1H, y=15N, z=13C dimensions it looks fine, with only the original set of contours. But if I then display the spectrum in a new orthogonal window, where x=1H, y=13C, z=15N, the same spectrum is display with two sets of overlaid contours. The same thing often happens when I try to Pick & Assign From Roots. > > I've tried modifying the contour settings, but both sets of contours are linked to the same positive and negative settings. > > My 2D spectra (HSQCs) do not have this problem. > > I've tried deleting the spectra and reloading them into the project, but this does not resolve the problem. > Im using Analysis 2.1 on Linux. > > Regards, > Alistair Hi Alistair, this is because you didn't set the sickness for view in z direction correctly. Try to shrink the z slider with the middle mouse button to a minimum and you will have only one contour line. In case you want to have a projection of your 3D, you can do the opposite. But be warned, this is very resource intensive. justin -- Justin Lecher Institute of Structural Biology and Biophysics ISB-3 Structural Biochemistry Research Centre Juelich 52425 Juelich, Germany phone: +49 2461 61 2117