Date: Tue, 27 Jun 2000 09:38:13 -0600
Reply-To: Mark S Dehaan/MSD/CC01/INEEL/US <MSD@INEL.GOV>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: Mark S Dehaan/MSD/CC01/INEEL/US <MSD@INEL.GOV>
Subject: Re: Creating dummy vars (lots of them)
Content-type: text/plain; charset=us-ascii
Wait a minute everyone.
Isn't David trying to do exactly what Proc GLMMOD was designed for? I have
used this in the past for this kind of thing with great success and without
all the gyrations the kind suggestions are going through.
What am I missing?
confused,
Mark DeHaan
David Richmond <daver80@DAKOTACOM.NET>@listserv.vt.edu> on 06/27/2000
12:11:28 AM
Please respond to David Richmond <daver80@DAKOTACOM.NET>
Sent by: "SAS(r) Discussion" <SAS-L@listserv.vt.edu>
To: SAS-L@LISTSERV.VT.EDU
cc:
Subject: Creating dummy vars (lots of them)
Hi,
I'm trying to create a very large set of dummy variables from a
single grouping variable which takes on nearly 1000 unique values. Each
dummy corresponds to a unique value of the grouping variable. The dummy
needs to equal 1 when the group var equals the corresponding value for the
dummy var and 0 otherwise. The example below illustrates what I mean.
id dum1 dum2 dum3
1 1 0 0
2 0 1 0
2 0 1 0
3 0 0 1
3 0 0 1
I have two questions:
1) is there an easy way to do this?
I've thought about trying to do this with macros, but my problem is
that
I want SAS to figure out how many dummies it needs using the 'max' option
in
proc univariate (i.e. what's the largest value of "id"?) and then pass that
number to a macro so it can execute a loop to create the dummies one by
one.
I have no idea how to do this.
2) I'm essentially trying to do a fixed effects model (w/ logistic reg.),
is there a better way to do this in SAS?
daver
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