Simulate a number between 1 and -1

[gkmzinsou]

I'm trying to test a Monte Carlo simulation. Is there a way to randomly sample a number between +1 and -1 in SAS ?

[yabwon]

Read this:

https://documentation.sas.com/?cdcId=pgmsascdc&cdcVersion=9.4_3.5&docsetId=lefunctionsref&docsetTarg...

Bart

[Reeza · Accepted solution]

Second example in this blog post - almost a decade old but still works 🙂

https://blogs.sas.com/content/iml/2011/08/24/how-to-generate-random-numbers-in-sas.html

The example below generates 10 values (do i=1 to 10) of random values, U between 0 and 1. 

The variable X, are uniform values between -1 and 1. 

---

@gkmzinsou wrote:

I'm trying to test a Monte Carlo simulation. Is there a way to randomly sample a number between +1 and -1 in SAS ?

---

data A;
call streaminit(123);       /* set random number seed */
   a = -1; b = 1;           /* example values of limits */

do i = 1 to 10;
   u = rand("Uniform");     /* u ~ U(0,1) */
   x = a + (b-a)*u; /* u ~ U(-1, 1)*/
   output;
end;
run;

EDIT: "Newer" method via @yabwon 

data want;
call streaminit(123);

do i=1 to 10;
   randVar = rand('uniform', -1, 1);
    output;
end;

run;

[gkmzinsou]

Thanks !

[ballardw]

Continuous or integer?