how to use a loop in a loop

SeanZ — Sun, 09 Mar 2014 07:39:08 GMT

Hi, I wrote a big macro to execute a do loop. While in the loop, I want to write another loop to do a job. I am not familiar how to do this. In the second loop, I have a dataset "have" to start with. In the dataset, I have four variables, firm, assets, parm1 and parm2. It looks like below

dataset have

firm asset parm1 parm2

01 50 0.2 10

02 30 0.2 15

03 10 0.1 20

...

Firms are unique. For each firm, I want to create 10 observations. Each observation is equal to parm1**(i)*(asset-parm2). For example, for firm 01, p1(the first observation) = 0.2**(1) * (50-10), p2(the second obs) = 0.2**(2)*(50-10), ... p10 = 0.2**(10)*(50-10).

So the dataset I want to obtain is like

firm p asset parm1 parm2

01 p1 50 0.2 10

01 p2 50 0.2 10

...

01 p10 .....

02 p1

...

Please advise how to write a do loop either in proc sql or in data to achieve this purpose.

Re: how to use a loop in a loop

Patrick — Sun, 09 Mar 2014 08:44:50 GMT

I believe it would help if you could provide us with a bit more background and eventually also with your macro. Not sure at all what you're trying to do here but may be Proc Plan could be interesting for you.

Re: how to use a loop in a loop

Tom — Sun, 09 Mar 2014 15:14:52 GMT

Does not sound like macro has anything to do with want you want. This can be done with a simple DO loop in a data step.

data want ;

set have ;

do i=1 to 10 ;

p=parm1**(i)*(asset-parm2);

output;

end;

run;

topic Re: how to use a loop in a loop in SAS Programming

how to use a loop in a loop

Re: how to use a loop in a loop

Re: how to use a loop in a loop