Date:         Tue, 20 Apr 1999 08:40:54 +0100
Reply-To:     Peter Crawford <Peter@CRAWFORDSOFTWARE.DEMON.CO.UK>
Sender:       "SAS(r) Discussion" <SAS-L@UGA.CC.UGA.EDU>
From:         Peter Crawford <Peter@CRAWFORDSOFTWARE.DEMON.CO.UK>
Subject:      Re: Using variable titles to create new variables.
In-Reply-To:  <199904191756.SAA11190@mail-relay.power.net.uk>

Hello John,
 
I seem to look at these challenges as "incomplete definitions".
 
I'm always expecting additional requirements:
 adding a few vars to this array statement should be simple enough;
 adding further referencing ( like setting all to zero ) is very simple;
 generating lists of variables on an automated basis from meta data is
 simpler when their usage is simplest (eg. as array element var lists)
 
There are, as you imply, overheads:
 the extra statement, and
 the definition and usage of the array.
 
I find those issues tolerable for more generalised availability.
 
 
And *of course* it is always great to be offering novel ideas !
 
 
Regards
 
John Whittington <medisci@powernet.com> writes
>At 18:07 19/04/99 +0100, Peter Crawford wrote:
>
>>where you want to use a non-consecutive set of variables, associate them
>>with an array statement and use similar logic, with the array notation
>>    array listA{*} a4 a3 b3 b4 ;
>>    if sum( of listA{*} ) then c4 = 1;
>
>Indeed - but that only makes sense if you intend to use the same 'list' of
>variables more than once.  Otherwise, it would involve less typing to put
>the list of variables as the argument of the SUM function, rather than in
>the ARRAY statement!
>
>Regards,
>
>John
>
>----------------------------------------------------------------
>Dr John Whittington,        Voice:    +44 (0) 1296 730225
>Mediscience Services        Fax:      +44 (0) 1296 738893
>Twyford Manor, Twyford,     E-mail:   medisci@powernet.com
>Buckingham  MK18 4EL, UK              mediscience@compuserve.com
>----------------------------------------------------------------
>
 
--
Peter Crawford    (_knowledge_ is a poor substitute for *real* experience,
                                               but they make a great team)