Zero filling COSY traces. (fwd)
Dr. Dieter Scheutzow (scheutzo@chemie.uni-wuerzburg.de)
Tue, 5 May 1998 09:02:00 +0100 (MDT)
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
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> 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