Dear SAS community,
I am having trouble counting and resetting the count with conditions and your help would be much appreciated.
Suppose that I have data below; Count is the variable I am after.
ID | Flag | Count |
A | 0 | 0 |
A | 0 | 0 |
A | 1 | 1 |
A | 1 | 2 |
A | 0 | 0 |
A | 1 | 1 |
A | 1 | 2 |
B | 1 | 1 |
B | 1 | 2 |
B | 0 | 0 |
B | 1 | 1 |
B | 1 | 2 |
I need the count variable to perform as displayed above.
Whenever flag=0 the count has to reset to 0.
How can I achieve this? Please help. Thank you!
Regards,
Myu
What have you tried? Can you post the code? If not: please post the data in usable form.
Untested:
data want;
set have;
by ID;
retain count;
if first.ID then count = 0;
if Flag = 1 then Count = Count + 1;
else Count = 0;
run;
What have you tried? Can you post the code? If not: please post the data in usable form.
Untested:
data want;
set have;
by ID;
retain count;
if first.ID then count = 0;
if Flag = 1 then Count = Count + 1;
else Count = 0;
run;
data have;
input ID $ Flag;
datalines;
A 0
A 0
A 1
A 1
A 0
A 1
A 1
B 1
B 1
B 0
B 1
B 1
;
data want;
set have;
by ID;
if first.ID | flag=0 then Count=0;
if flag then Count+1;
run;
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