Date:         Thu, 26 Jul 2007 09:36:44 -0700
Reply-To:     webonomic <webonomic@GMAIL.COM>
Sender:       "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From:         webonomic <webonomic@GMAIL.COM>
Organization: http://groups.google.com
Subject:      Re: Generate observations with a specific range of randomly
              chosen values
Comments: To: sas-l@uga.edu
In-Reply-To:  <1185465164.917924.145350@k79g2000hse.googlegroups.com>
Content-Type: text/plain; charset="us-ascii"

Thanks, that helped me figure out what I need and it also lead me to
research more about RANUNI.

I did the following and it seems to work:

data a;
  do i=1 to 20;
    x=floor(ranuni(8)*4)+1;
    y=floor(ranuni(8)*2)+0;
    if y=0 then z=floor(ranuni(8)*3)+1;
        else z=floor(ranuni(8)*3)+4;
    output;
  end;
run;

At first I thought something was wrong because the value of 6 was not
chosen for Z but all I needed was to create more observations (do i=1
to 100).


Jared




On Jul 26, 9:52 am, RolandRB <rolandbe...@hotmail.com> wrote:
> On 26 Jul, 17:31, webonomic <webono...@gmail.com> wrote:
>
>
>
> > I want to populate N observations with a random value for each
> > variable (X, Y, Z) in a dataset.
> > Each variable in the dataset can only have a certain range of values.
>
> > X must be a random whole number with values of 1, 2, 3, or 4.
> > Y must be a either a 1 or 0, assigned randomly.
> > Z is dependant on Y.  If Y = 0 than Z in (1,2,3) Else If Y = 1 than Z
> > in (4,5,6)
>
> > My result dataset would look something like this:
>
> > id     X       Y        Z
> > 1      3       0        3
> > 2      4       0        2
> > 3      1       1        5
> > 4      4       0        2
> > 5      2       1        6
> > 6      2       0        1
> > 7      4       0        3
> > 8      1       1        4
> > 9      3       1        5
> > ...
> > N     3        1       6
>
> > Thanks in advance.  I have been searching about random number
> > generation as well as creating simulating test trial datasets, but
> > nothing has come up for choosing a random value from a set of known
> > values.
>
> > Jared
>
> This is how to get 1,2,3 or 4 randomly. The rest you can work out.
>
> data _null_;
>   do i=1 to 20;
>     x=floor(ranuni(8)*4)+1;
>         put x=;
>   end;
> run;