ftp.cs.arizona.edu/ftp.cs.arizona.edu.tar/ftp.cs.arizona.edu/icon/newsgrp/group97a.txt/000051_icon-group-sender _Thu Feb 27 19:43:43 1997.msg

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Received: by cheltenham.cs.arizona.edu; Fri, 28 Feb 1997 08:56:53 MST
To: [e-mail]
Date: Thu, 27 Feb 1997 19:43:43 -0800
From: Stuart Robinson <[e-mail]>
Message-Id: <[e-mail]>
Organization: Reed College,  Portland, Oregon
Sender: [e-mail]
Subject: Help with Program
Errors-To: [e-mail]
Status: RO
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Hello.  I am trying to do some text analysis with Icon.  Because I am new
to the language (and to programming in general), I am not sure how to
proceed.

Let me describe the problem and perhaps some generous soul will lend a
hand.

I have a number of texts each line of which has been coded for three types
of information.  Each line of the text will be assigned a number and a
code for two categories. The numbers are just whole numbers (raning from 1
to 20 or so) and each category has four members (say, ABCD and WXYZ).
Here is an example text:

1 A X
1 A Y
1 B Y
2 B Y

Note that some successive lines share an index number (as in lines 1 and
2 and 2 and 3).  When that is the case, I would like the program to
output the members of each category for the matched lines, as below:

1-2    AA    XY
2-3    AB    YY

That is it.  There are some additional complications, but I think that I
can solve those at a later date.  At the moment, this sort of
rough-and-ready analysis is all I need.

Any suggestions?  Thanks in advance.

--Stuart <[e-mail]>