data s ;
input name $ 15. ;
cards ;
dfsdfdas
dfsdfasdf
sdfwtrw
ghjghj
fghfdh
etwrt
rtyurtuy
rtrt
rtrysrt
rtrrt
;
run;
how to assign random numbers like below table ?
name | random |
dfsdfdas | 1 |
dfsdfasdf | 2 |
sdfwtrw | 1 |
ghjghj | 2 |
fghfdh | 1 |
etwrt | 2 |
rtyurtuy | 1 |
rtrt | 2 |
rtrysrt | 1 |
rtrrt | 2 |
I fail to observe any "randomness" in your assigned numbers. You merely assign 1 and 2 to the records whose observation numbers are odd and even, respectively. All you need to do to achieve that is:
data r ;
set s ;
random = 2 - mod (_n_, 2) ;
run ;
However, if you really need RANDOM to be random in the [1:2] range, it should instead be:
data r ;
set s ;
random = ceil (rand ("uniform") * 2) ;
run ;
Paul D.
Or
data r ; set s ; random = rand ("table",0.5,0.5) ; run ;
Rand table is good for generating integers with known probabilities. The above results in 1 or 2 with probabilities of 0.5 and 0.5.
If you wanted a different distribution such as 60% 1 and 40% 2 then
data r ; set s ; random = (rand ("table",0.6,0.4) ; run ;
You can use any number of probabilities as long as they total to 1 though for values with repeating decimals such as 1/3 using a variable or the calculation in the table options:
random = rand ("table",1/3,1/3,1/3) ;
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