topic ranuni in SAS Programming

ranuni

shursulei2 — Thu, 14 May 2020 07:06:05 GMT

Why the ranuni Function generate the random numbers is not effect.Such as

data aa;
set sashelp.class;
y=ranuni(10);
run;

Why run the code twice ,but the result is sample.

I want to know how to use the sas to generate the random numbers 1 to 9.

as the programming of the python has random function to generate.

Re: ranuni

ed_sas_member — Thu, 14 May 2020 07:29:00 GMT

Hi @shursulei2

In the code below , The RAND function returns a random uniformly distributed number in the interval (0,1). It is then multiplied by 9 auto output a random integer in the range 1 to 9. NB: The CEILZ function returns the smallest integer that is greater than or equal to the argument.

Is it what you are looking for?

y= ceilz(9*rand('uniform'));

Example:

data aa;
do i=1 to 100000000;
	y= ceilz(9*rand('uniform'));
	output;
end;
run;

proc freq;
	table y;
run;

Best,

Re: ranuni

Kurt_Bremser — Thu, 14 May 2020 07:34:50 GMT

The newer (and better) RAND Function provides a specific type for this:

y = rand('integer',1,9);