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# How do I Generate Random data with seed and restriction?

So I am creating a scoring Macro for a questionnaire while I wait for my data to arrive.

I would like to create a dataset to test out the scoring macro that I have created.

Basically, the dataset would be ID  (1,2,3,4) and Var1-var30, where Var1-30 have randomly generated whole number values between 1 and 6. Also I would like to have a seed to start so I can replicate the same dataset again.  I need maybe 10 records at most.

I did some quick googling and can't seem to figure this out. The rand function I found seem to come up with numbers with decimal values (which is not what I want, I want whole numbers 1,2,3,4,5 or 6).  I think this should be a basic task but I can't seem to figure it out So I am hoping someone can help me

Accepted Solutions
Solution
‎07-07-2016 01:52 PM
Super User
Posts: 6,781

## Re: How do I Generate Random data with seed and restriction?

Low seeds generate approximately random numbers, but that's probably all you will need for test data.

data want;

array var {30};

do obsno=1 to 10;

id = ceil(ranuni(12345) * 4);

do seed=1 to 30;

var{seed} = ceil(ranuni(seed) * 6);

end;

output;

end;

run;

All Replies
Super User
Posts: 13,563

## Re: How do I Generate Random data with seed and restriction?

See if this gives you a start.

``````

data want;
array v var1-var30;
call streaminit (123); /* this makes the random results reproducable*/
do id=1 to 10;
do i=1 to dim(v);
/* the decimal values refer to the proportion of responses that should have
the order value. ('table', .4, .3, .2, .1) would have 40% with value 1,
30% with 2, 20% with 3 and 10% with 1.. The values should total to 1.
The following line says each of the varaibles with have the same overall
distribution but the values per individual record will vary.
If you want to have different distributions than you could have
single line per var and skip the i loop for array, OR have multiple
arrays each group with a similar distribution
*/
v[i]= rand('table', .25, .15, .18, .12, .2, .1);

end;
output;
end;
drop i;
run;
``````
Solution
‎07-07-2016 01:52 PM
Super User
Posts: 6,781

## Re: How do I Generate Random data with seed and restriction?

Low seeds generate approximately random numbers, but that's probably all you will need for test data.

data want;

array var {30};

do obsno=1 to 10;

id = ceil(ranuni(12345) * 4);

do seed=1 to 30;

var{seed} = ceil(ranuni(seed) * 6);

end;

output;

end;

run;

☑ This topic is solved.