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From: adam@ste.dyn.bae.co.uk (Adam Curtin)
Newsgroups: comp.lang.apl
Subject: Re: Sorting Columns
Message-ID: <1991Apr30.091422.476@ste.dyn.bae.co.uk>
Date: 30 Apr 91 09:14:22 GMT
References: <569@kepler1.kepler.com>
Reply-To: adam@ste.dyn.bae.co.uk (Adam Curtin)
Organization: British Aerospace (Dynamics), Stevenage
Lines: 18

In article <569@kepler1.kepler.com> rjfrey@kepler.com (Robert J Frey) writes:
>My original response to this problem dealt with sorting the columns as units,
>rather than sorting each column interally. Here is a function which solves 
>the latter in Dyalog APL:
>
>[0]	R assign COLUMN_GRADE X
>[1]	R assign gradedown foreach X assign split[quadIO] X
>[3]	R assign transpose mix R(disclose foreach compose enclose) foreach X
>
>where split is up-arrow, mix is down-arrow and compose is jot. The idiom
		^^               ^^^^

You transposed these two. "split-down, mix-up". John Scholes gets them confused,
too!

Adam
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