MACRO SAS to build a pedigree of specific individuals

[alan_maxs]

Hi Ksharp!

The code works, but sometimes (with some individuals in the data "n") the code gives error ( "ERROR: Key not found") in the final data set ( "final_want"). Why?
Reading the forum I found that this may be due to using "h.find ()" instead of "rc=h.find ()". what do you think?

Thank you!

Alan

[Ksharp]

Yes. use "rc=h.find ()"  instead of "h.find()" .

[alan_maxs]

Is it ok like this? 
Is added something else? 

data final_want;
if _n_=1 then do;
  if 0 then set have;
  declare hash h(dataset:'have');
  h.definekey('individual');
  h.definedata('sire','dam','sex','birth_year');
  h.definedone();
end;
call missing(of _all_);
set want;
 individual=node;
 rc=h.find();/***<---****/
run;

[Ksharp]

Yes. That is what I referred to .