Hi Rick,

Your website is very helpful! I tried to use "LOC" but it doesn't give me the answer. Could you take a look? Maybe the vector is too long??

%let cut = 0.84;
proc iml ;
the = do(-4, 4, 0.1);
jcut=loc(the = &cut.);
print jcut;

Thank you so much for your help!

Best,
Sunhee