deleting obs with conditions

[Amalik]

Hi,

My data looks like follows,

PERMNO	T1	T2	upto T516
1
2
3

Now, I want to delete permno's if all observations from T1 through T516 are missing.

And then I also want to delete permno's which have less than 24 observations from T1 through T516 (as there are missing values in my data set)

Can someone suggest on how to do this?

Thanks.

[mkeintz · Accepted solution]

data want;
   set have;
   array t {*} t1-t516;
   if n (of t{*}) > 24;
run;