Date:         Mon, 18 Jul 2005 16:09:14 -0600
Reply-To:     Roberto Valdivia <valdivia@MONTANA.EDU>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         Roberto Valdivia <valdivia@MONTANA.EDU>
Subject:      Re: Help creating new variables
Comments: To: Nathaniel_Wooding@dom.com
In-Reply-To:  <OF3840B89C.EBDE7A16-ON85257040.005897E7@dom.com>
Content-Type: text/plain; charset="US-ASCII"

Thanks Nat, this code solved my problem.

Roberto.

-----Original Message-----
From: Nathaniel_Wooding@dom.com [mailto:Nathaniel_Wooding@dom.com]
Sent: Saturday, July 16, 2005 10:18 AM
To: Roberto Valdivia
Cc: SAS-L@LISTSERV.UGA.EDU
Subject: Re: Help creating new variables

Roberto

There are several ways that you could write your array statement.

Nat Wooding

data a;
input d1-d5;
cards;
1 2 3 4 5
6 7 8 9 10
11 12 13 14 15
data b;
     set a;
       retain b0 -1.5;* I do not know where you will pick up b0 so I am hard
coding it here.
                      * it could just as well be a variable in you input
data set. you may
                      * want to drop it or simply write it direcly in your
calculation state
                      ments below;
       array one d: ;*this is a wild card reference to any variable starting
with the letter d;
       array two wd1 - wd5 ;
       do over one;
            two=  exp(b0*one*one);
       end;
proc print;
run;


|---------+---------------------------->
|         |           Roberto Valdivia |
|         |           <valdivia@MONTANA|
|         |           .EDU>            |
|         |           Sent by: "SAS(r) |
|         |           Discussion"      |
|         |           <SAS-L@LISTSERV.U|
|         |           GA.EDU>          |
|         |                            |
|         |                            |
|         |           07/15/2005 05:36 |
|         |           PM               |
|         |           Please respond to|
|         |           Roberto Valdivia |
|         |                            |
|---------+---------------------------->

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  |       Subject:  Help creating new variables
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Hi all,

I've recently posted a message asking for help with a Macro, I've got an
answer that solved the main problem, however I'm having problems trying to
do something that might be easy to do:

I have a set of 2000 observations and the following variables:

Loc fips b0 d1 d2 d3...d2000  (so I have 2000 "d's" = number of
observations).
I need to create other 2000 variables: wd1, wd2 ..wd2000 as:
wd1=exp(-bo*d1*d1)
wd2=exp(-bo*d2*d2) or in general wdX=exp(-b0*dX*dX) where X=1,2...2000

Could anyone please help me with this?.

Thanks,

Roberto.




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