1. Changing a file from being long to being wide*
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September 17, 2010
A summary of SAS-L posts by
Ian Whitlock and datanull

2. The File You Have data have; input First_Name $ status $ x1 x2 y1 y2
(hour1 hour2) (:time.) year1 year2;
format hour: hhmm5.;
cards ;
Josh no :10 19:
Josh yes :10 19:
Josh no :05 08:
Josh yes :05 08: ;

3. The File You Need data need; input First_Name $ status $
x1_1 x2_1 y1_1 y2_1
(hour1_1 hour2_1) (:time.) year1_1 year2_1
x1_2 x2_2 y1_2 y2_2
(hour1_2 hour2_2) (:time.) year1_2 year2_2;
format hour: hhmm5.;
cards ;
Josh no :10 19: :05 08:
Mary no :10 19: :05 08: ;

4. A Proc Transpose Solution
/* sort data */
proc sort data=have out=temp1;
by First_Name status;
run;

5. A Proc Transpose Solution
/* sort data */
proc sort data=have out=temp1;
by First_Name status;
run;
/* add sequence # to make */
/* one obs per by group */
data temp1;
set temp1;
by first_name status;
if first.status then seq = 0;
seq + 1;
run;

6. A Proc Transpose Solution
/* sort data */
proc sort data=have out=temp1;
by First_Name status;
run;
/* add sequence # to make */
/* one obs per by group */
data temp1;
set temp1;
by first_name status;
if first.status then seq = 0;
seq + 1;
run;
/* transpose */
proc transpose data = temp1
out = temp2;
by first_name status seq;
var x1 x2 y1 y2 hour1 hour2
year1 year2;
run;

7. A Proc Transpose Solution
/* sort data */
proc sort data=have out=temp1;
by First_Name status;
run;
/* add sequence # to make */
/* one obs per by group */
data temp1;
set temp1;
by first_name status;
if first.status then seq = 0;
seq + 1;
run;
/* transpose */
proc transpose data = temp1
out = temp2;
by first_name status seq;
var x1 x2 y1 y2 hour1 hour2
year1 year2;
run;
/* create names for */
/* final transpose */
data temp2;
set temp2;
_name_ = cats (_name_ , "_", seq);
run;

8. A Proc Transpose Solution
/* sort data */
proc sort data=have out=temp1;
by First_Name status;
run;
/* add sequence # to make */
/* one obs per by group */
data temp1;
set temp1;
by first_name status;
if first.status then seq = 0;
seq + 1;
run;
/* transpose */
proc transpose data = temp1
out = temp2;
by first_name status seq;
var x1 x2 y1 y2 hour1 hour2
year1 year2;
run;
/* create names for */
/* final transpose */
data temp2;
set temp2;
_name_ = cats (_name_ , "_", seq);
run;
/* produce desired file */
proc transpose data = temp2
out = need (drop=_:);
by first_name status;
var col1;
run;

9. A Proc Transpose Solution
/* sort data */
proc sort data=have out=temp1;
by First_Name status;
run;
/* add sequence # to make */
/* one obs per by group */
data temp1;
set temp1;
by first_name status;
if first.status then seq = 0;
seq + 1;
run;
/* transpose */
proc transpose data = temp1
out = temp2;
by first_name status seq;
var x1 x2 y1 y2 hour1 hour2
year1 year2;
run;
/* create names for */
/* final transpose */
data temp2;
set temp2;
_name_ = cats (_name_ , "_", seq);
run;
/* produce desired file */
proc transpose data = temp2
out = need (drop=_:);
by first_name status;
var col1;
run;
/* reintroduce formats */
data need;
set need;
format hour: hhmm5.;
run;

10. Changing a file from being long to being wideor

11. A Proc Summary Solution
proc summary data=have nway;
class first_name status;
output out=need (drop=_:)
idgroup(out[2](x1--year2)=);
run;

12. Changing a file from being long to being wide
Questions?