unable to get the cumulative value in the datastep

[shru]

Hi,

My code is

data text;

set data1;

if nobs=1 then do;

b=0;

v=0;

end;

b=b+bal;

v=v+val;

run;

Where my data1 datset contains a column nobs like below

nobs

2     

3    

4

5

6

7

and i want result like

nobs bal val

1      2    3

2     3    5

3     5     8

likewise

the code should produce the cumulative values ,but i am getting the missing value when i run the above code

can anyone let me know is there any other way to do or y is this failing?

Thanks

[Doc_Duke]

I don't understand the result that you are trying to get, but there are several obvious problems that will yield missing data:

1) you need to read about the RETAIN statement for DATA step accumulation.

2) nobs never takes on the value '1' so the first DO is never executed.

3) bal and val are not in the input data set, so they start as missings.

Doc Muhlbaier

Duke

[PaigeMiller]

data text;

set data1;

b+bal;

v+val;

run;

[Linlin]

try changing

b=b+bal;

v=v+val;

to

b+bal;

v+val;