hello,
I would like to get only the distinct values for a new variable.
for example,
ID var
1 AABI
2 TIBBC
3 TTIBTIC
so I would like to have a the new variable as output below:
ID var var_new
1 AABI ABI
2 TIBBC TIBC
3 TTIBTIC TIBC
data have;
input ID var $;
cards;
1 AABI
2 TIBBC
3 TTIBTIC
;
data want ;
if _n_=1 then do;
dcl hash H () ;
h.definekey ("k") ;
h.definedone () ;
end;
set have;
length var_new $30;
do _n_=1 to lengthn(var);
k= char(var,_n_);
if h.check()=0 then continue;
var_new=cats(var_new,k);
h.add();
end;
h.clear();
drop k;
run;
What about ABAI? I has 2 A's, but they are not contiguous.
data have;
input ID var $;
cards;
1 AABI
2 TIBBC
3 TTIBTIC
;
data want ;
if _n_=1 then do;
dcl hash H () ;
h.definekey ("k") ;
h.definedone () ;
end;
set have;
length var_new $30;
do _n_=1 to lengthn(var);
k= char(var,_n_);
if h.check()=0 then continue;
var_new=cats(var_new,k);
h.add();
end;
h.clear();
drop k;
run;
thanks, I don't have much knowledge with hash object. that's very nice.
data have;
input ID var $;
cards;
1 AABI
2 TIBBC
3 TTIBTIC
;
data want;
set have;
array x{100} $ 1 _temporary_;
n=0;call missing(of x{*});
do i=1 to length(var);
temp=char(var,i);
if temp not in x then do;n+1;x{n}=temp;end;
end;
want=cats(of x{*});
drop n i temp;
run;
Available on demand!
Missed SAS Innovate Las Vegas? Watch all the action for free! View the keynotes, general sessions and 22 breakouts on demand.
Learn how use the CAT functions in SAS to join values from multiple variables into a single value.
Find more tutorials on the SAS Users YouTube channel.