Date:         Fri, 21 Aug 2009 12:12:52 -0400
Reply-To:     Joe Whitehurst <joewhitehurst@GMAIL.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Joe Whitehurst <joewhitehurst@GMAIL.COM>
Subject:      Re: Observation Number for Row Accessed Using Key=
Comments: To: Kevin Myers <kmyers1@clearwire.net>
In-Reply-To:  <00CB5E1A25CC407FA5EF70B87FC7F2C9@KAM1720>
Content-Type: text/plain; charset=ISO-8859-1

Kevin,
So many possibilities, so little time.  This would be a completely trivial
task if you are able to make your datastep a datastep view and execute it in
a SAS Component Language program as was discussed ad nauseum last week on
SAS-L.  In addition to being able to store observation numbers in SCL Lists,
you also would have available functions like:

NOTE

You can use note-id in the POINT function to return to the current row. (Use
NOTE to mark a row, then use POINT to return to the row.) Each note-id is a
unique numeric value. There can be up to 1,000 note-ids per open table.

To free the memory that is associated with a row ID, use DROPNOTE.



On Fri, Aug 21, 2009 at 11:55 AM, Kevin Myers <kmyers1@clearwire.net> wrote:

> In a complex data step, I am randomly accessing observations in a data set
> by using a SET statement with the KEY= option.  Depending on certain
> criteria, I want to cache the observation numbers so that I can quickly
> return to them later by using another SET statement, this time with the
> POINT= option.  How can I obtain the observation number for an observation
> that has been read using a SET statement with the KEY= option?
>
> Thanks,
> Kevin M.
>