How can I use a data step to create a count unique by ID and category. I want the same count to remain for non unique values. Please see example attached and the wanted counts. Thanks
data have;
input (ID CATEGORY) ($);* WANTED COUNT;
cards;
001 PIG 1
001 PIG 1
003 SHEEP 1
003 PIG 2
003 PIG 2
004 SHEEP 1
004 SHEEP 1
005 PIG 1
005 PIG 1
005 COW 2
005 SHEEP 3
;
data want;
set have;
by id category notsorted;
if first.id then count=1;
else if first.category then count+1;
run;
data have;
input (ID CATEGORY) ($);* WANTED COUNT;
cards;
001 PIG 1
001 PIG 1
003 SHEEP 1
003 PIG 2
003 PIG 2
004 SHEEP 1
004 SHEEP 1
005 PIG 1
005 PIG 1
005 COW 2
005 SHEEP 3
;
data want;
set have;
by id category notsorted;
if first.id then count=1;
else if first.category then count+1;
run;
Presuming the data is grouped into contiguous blocks the syntax BY var1 var2 NOTSORTED;
can be used. This assumption is made because group 5 is not sorted in alphabetical order.
data have; input
ID CATEGORY $ wanted; datalines;
001 PIG 1
001 PIG 1
003 SHEEP 1
003 PIG 2
003 PIG 2
004 SHEEP 1
004 SHEEP 1
005 PIG 1
005 PIG 1
005 COW 2
005 SHEEP 3
;
data want;
set have;
by id category notsorted;
if first.id then seq=0;
if first.category then seq+1;
run;
Output
Thank you so much - that's perfect!
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