topic unable to get the cumulative value in the datastep in SAS Programming

unable to get the cumulative value in the datastep

shru — Fri, 11 Jan 2013 05:54:28 GMT

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

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 — Fri, 11 Jan 2013 14:38:23 GMT

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 — Fri, 11 Jan 2013 14:42:08 GMT

data text;

set data1;

b+bal;

v+val;

run;

Linlin — Fri, 11 Jan 2013 14:44:01 GMT

try changing

b=b+bal;

v=v+val;

b+bal;

v+val;