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CF,
Even though you are using the same seed, you will get different numbers
in the series. To see this remove the FLOOR() function. You *will* get
the same number upon separate invocations of the data step.
Think of the seed as identifying a series of numbers. Each call within a
data step goes further down the list. A new data step re-starts the
series:
36 data _null_;
37 do i=1 to 5;
38 x=ranuni(10);
39 y=ranuni(10);
40 put i= x= y=;
41 end;
42 run;
i=1 x=0.8496256982 y=0.7008871565
i=2 x=0.9982430609 y=0.5939864538
i=3 x=0.2160257787 y=0.6927734975
i=4 x=0.4297917315 y=0.3169172282
i=5 x=0.4979402621 y=0.665665516
NOTE: DATA statement used:
real time 0.00 seconds
cpu time 0.00 seconds
43
44
45 data _null_;
46 do j=1 to 10;
47 x=ranuni(10);
48 put j= x=;
49 end;
50 run;
j=1 x=0.8496256982
j=2 x=0.7008871565
j=3 x=0.9982430609
j=4 x=0.5939864538
j=5 x=0.2160257787
j=6 x=0.6927734975
j=7 x=0.4297917315
j=8 x=0.3169172282
j=9 x=0.4979402621
j=10 x=0.665665516
NOTE: DATA statement used:
real time 0.00 seconds
cpu time 0.00 seconds
To avoid your problem assign the call to a variable and work from there:
data sales1;
do i=1 to 5;
ranuni=ranuni(12345)*6;
Prod_Num=floor(ranuni);
output;
end;
run;
Regards,
Kevin
Kevin Viel
Department of Epidemiology
Rollins School of Public Health
Emory University
Atlanta, GA 30322
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