Re: Zero filling COSY traces. (fwd)

Daniel W. Bearden (bearden@manta.chbr.noaa.gov)
Tue, 5 May 1998 10:22:23 -0400

Hello,
Unfortunately the proposed solution does not work in xwinnmr 1.3, and I
suspect it does not work under uxnmr. The steps I found to work are:
1) Extract the row from the 2D, saving as a 1-d spectrum.
2) Do: ift (there is no 'fid' file at this point)
3) Do: genfid (You should specify a new expno. This creates the file 'fid' in
the new experiment.)
4) In the new experiment, change SI to the desired value.
5) Do: ft

Hope this helps,
Dan

On May 5, 9:02am, Dr. Dieter Scheutzow wrote:
> Subject: Zero filling COSY traces. (fwd)
> Forwarded message:
> > From Killday@HBOI.edu Fri May 1 18:37:43 1998
> > Message-Id: <30C46541A1B3D111BF0500A0C99D6E5102B4A0@SAILFISH>
> > From: Brian Killday <Killday@HBOI.edu>
> > To: "'ammrl@wwitch.unl.edu'" <ammrl@wwitch.unl.edu>
> > Subject: Zero filling COSY traces.
> > Date: Fri, 1 May 1998 10:46:02 -0400
> > Mime-Version: 1.0
> > X-Mailer: Internet Mail Service (5.0.1460.8)
> > Content-Type: text/plain
> >
> > Greetings NMR fans,
> >
> > Does anyone out there know how to zero fill 1d traces from 2d phase
> > sensitive COSY spectra in UXNMR on an AMX? I acquired and processed a 2d
> > spectrum with 4k points in f2, selected the appropriate row in the 1d menu
> > and transferred this row to 1d using the 1D-mode button. I then copied and
> > renamed this using the wrpa command. This trace consists of 4K points and
> > has a digital resolution of about 1 Hz. I would like to zero fill this
file
> > to 32K points. I have tried doing an inverse transform (ift command),
> > changing SI to 32K in EDP, and retransforming (ft) but this does not work,
> > the spectrum still has just 4k points. Am I on the right track? Thanks in
> > advance for any help on this.
> >
> > Brian
> > K. Brian Killday
> > Research Specialist
> > Division of Biomedical Marine Research
> > Harbor Branch Oceanographic Institution
> > 5600 U. S. 1, North
> > Ft. Pierce, FL 34946
> >
> > Phone: 561-465-2400 ext. 456
> > Fax: 561-461-2221
> > Email: killday@hboi.edu
> >
> >
> Hello Brian,
>
> you should try to extract the desired trace from the raw data as 1D fid
> with the command "rser <row#> <newexpmo#>. Then UXNMR shows the new expno #
> as 1D fid. Now it's possible to set SI to 32k and after FT to get a spectrum
> with high digital resolution.
>
> Dieter
>
>
> Dr. Dieter Scheutzow
> Institut fuer Organische Chemie
> der Universitaet Wuerzburg
>
> Am Hubland
>
> D-97074 Wuerzburg
>
> Tel. +49 (0) 931-888-5309
> Fax +49 (0) 931-888-4606
>
> e-mail: scheutzo@chemie.uni-wuerzburg.de
>
>-- End of excerpt from Dr. Dieter Scheutzow

-- 
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Daniel W. Bearden                       Phone:  (803) 762-8527
National Ocean Service	                FAX:    (803) 762-8700
219 Ft. Johnson Rd.        e-mail: bearden@manta.chbr.noaa.gov
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