random numbers generation

Pavan_SAS — Wed, 05 Nov 2008 13:41:53 GMT

hi all,

How we can generate random numbers between a specified range?
Ex: I want to create count=23 to 64 randomly in a dataset which contains 200 observation. How?
It should be generic. Means write with macros. Just user need to give start, end values.

I tried like this:
Count=ceil(ranuni(0)*42)+22;

This is correct for that range only !

If range is changed, we need to change the code.

I want this with macro code, so that it will generate required range only !

Example code…

%macro a;
Data qwe;
Do i=1 to 200;
Count= --------------- -? --> fill this statement.
Output;
End;
Run;
%mend;
%a(start=23,end=64);

Re: random numbers generation

Pavan_SAS — Wed, 05 Nov 2008 14:04:15 GMT

go the answer:

%macro a(a,b,c);
Data qwe;
Do i=1 to &c;
Count= ceil(ranuni(0)*(&b-&a))+&a;
Output;
End;
Run;
%mend;
%a(23,64,200);

Re: random numbers generation

Pavan_SAS — Wed, 05 Nov 2008 14:15:53 GMT

Count= ceil(ranuni(0)*(&b-&a+1))+(&a-1);

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