conditional loop

[kumarK]

Hi,

i want sum of first 5 obs(1-5) then sum of next five obs(2-6) and so on...

data have;

input obs var1;

cards;

1 11

2 12

3 13

4 14

5 15

6 16

7 17

8 18

9 19

10 20

run;

Thanks..

[PaigeMiller]

data have;

input obs var1;

lag1=lag(var1);

lag2=lag2(var1);

lag3=lag3(var1);

lag4=lag4(var1);

sum_of_five=sum(var1,lag1,lag2,lag3,lag4);

cards;

1 11

2 12

3 13

4 14

5 15

6 16

7 17

8 18

9 19

10 20

run;

[Astounding]

Just to add a little variety:

sum_of_five + var1;

back5 = lag5(var1);

if back5 > . then sum_of_five = sum_of_five - back5;

[Ksharp · Accepted solution]

You didn't post the output you need yet .

Code: Program

data have;
input obs var1;
cards;
1 11
2 12
3 13
4 14
5 15
6 16
7 17
8 18
9 19
10 20
;
run;
proc sql;
 create table want as 
  select *,(select sum(var1) from have where obs between a.obs and a.obs+4) as sum
   from have as a;
 quit;

Xia Keshan

[PaigeMiller]

Those are great ideas and certainly would be much less coding (especially if someone wanted the running average of 10 or 20 data points). Thanks!