Hi Michael,
I would go with your own suggestion of replacing all of the '$a's with a semicolon then replace the beginning ('=520 0\;') with '=520 0\$a'. I think that should work just fine.
Joel
-----Original Message-----
From: MarcEdit support in technical and instructional matters [mailto:[log in to unmask]] On Behalf Of Michael J Dulock
Sent: Tuesday, December 01, 2009 5:45 PM
To: [log in to unmask]
Subject: removing extra subfields in 520
Hi folks,
I've been playing with this for some time and am having no luck. It doesn't
help that what little I can do with regular expressions I learned by
backwards engineering those supplied by others...
Anyway, I'm going to be loading a large number of records from one source
into our catalog, some of which contain a 653 field with multiple keywords
in it. Our policy is to change 653s into 520 1st indicator 0 for subject
strings, which I've done without incident. The problem is that each term is
preceded by a $a, as in:
=520 0\$aAerosols$aComputer Calculations$aDiffuse Solar Radiation$aDirect
Solar Radiation
I'd like to replace all but the first $a with a semicolon or comma, but I
can't figure out how to get a regular expression to do it (if one can). It
would also work to replace all the $a, then I could put the initial required
one back in by replacing "=520 0\;" with "=520 0\$a".
I realize this may be too variable a characteristic for a regular expression
to fix, but I thought I'd try the collective wisdom before I go through and
manually fix them.
Any ideas?
Thanks much in advance,
Michael
____________________________________________
Michael Dulock
Assistant Professor
Metadata Librarian
University of Colorado at Boulder Libraries Cataloging & Metadata Services
Department
184 UCB, 1720 Pleasant Street
Boulder, Colorado 80309-0184
Phone: 303-492-5518
Fax: 303-492-0494
E-mail: [log in to unmask]
http://ucblibraries.colorado.edu/___________________________________________
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