10-10-2012
sort script
I have need of a sorting script that will sort a file of tab delimited data on multiple columns. I often do this kind of thing in excel, but I have need of something more automated. I guess the syntax would be something like, sort by columnName, then by otherColumnName, etc. There are allot of options for this sort of thing, such as the sort order (a-z, z-a), data types, etc, so I'm not sure where to begin. I know that the higher level interpreters like python have nice sort functions, but I don't know python really at all. I guess that for now I would hard code the sort criteria, but it also might be nice to eventually be able to pass that in, assuming that a reasonable syntax could be developed.
Any suggestions as to where to start with this?
LMHmedchem
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YAZ_SORT(3) 1 YAZ_SORT(3)
yaz_sort - Sets sorting criteria
SYNOPSIS
void yaz_sort (resource $id, string $criteria)
DESCRIPTION
This function sets sorting criteria and enables Z39.50 Sort.
Call this function beforeyaz_search(3). Using this function alone does not have any effect. When used in conjunction with yaz_search(3), a
Z39.50 Sort will be sent after a search response has been received and before any records are retrieved with Z39.50 Present
(yaz_present(3).
PARAMETERS
o $id
- The connection resource returned by yaz_connect(3).
o $criteria
- A string that takes the form field1 flags1 field2 flags2 where field1 specifies the primary attributes for sort, field2 seconds,
etc.. The field specifies either a numerical attribute combinations consisting of type=value pairs separated by comma (e.g.
1=4,2=1) ; or the field may specify a plain string criteria (e.g. title. The flags is a sequence of the following characters
which may not be separated by any white space.
Sort Flags
o a - Sort ascending
o d - Sort descending
o i - Case insensitive sorting
o s - Case sensitive sorting
RETURN VALUES
No value is returned.
EXAMPLES
Example #1
Sort Criterias
To sort on Bib1 attribute title, case insensitive, and ascending you would use the following sort criteria:
1=4 ia
If the secondary sorting criteria should be author, case sensitive and ascending you would use:
1=4 ia 1=1003 sa
PHP Documentation Group YAZ_SORT(3)