How to globally adjust spectrum referencing for relaxation/CPMG datasets?

[Asha Sanjeewani]

Hi Dr. Lee,

I am performing T1, T2, HetNOE, and CPMG relaxation analyses in Poky. When I load my 2D H-N HSQC peak list onto the relaxation spectra, the markers are systematically offset by about 0.06 ppm, mostly in the H dimension. I tried using the Spectrum Tool (st) to apply a global calibration shift to the H axis (testing both positive and negative values), but the assigned peak markers did not move. Could you please advise on how to fix this?

Thank you

Asha R. A. 

[Lee, Woonghee]

Hi,

In the POKY Notepad, File -> POKY Script -> Find additional ….

Filter by “position”, and choose “shift_spectrum_peak_position_script.py”.

Then, cmd/ctrl+b.

Woonghee Lee, I.E.I.P., M.S., Ph.D.

 

Associate Professor & Data Science and Chemistry Certificate Program Director

Department of Chemistry

Center for Advanced Computational Molecular Science

University of Colorado Denver

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https://poky.clas.ucdenver.edu

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https://clas.ucdenver.edu/chemistry/data-science-and-chemistry-certificate

 

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From: nmr-s...@googlegroups.com <nmr-s...@googlegroups.com> on behalf of Asha Sanjeewani <asha...@gmail.com>
Date: Friday, July 10, 2026 at 3:02 PM
To: NMR POKY/SPARKY USER GROUP <nmr-s...@googlegroups.com>
Subject: [NMR POKY/SPARKY] How to globally adjust spectrum referencing for relaxation/CPMG datasets?

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