topic Re: Do loop for nonconsecutive number in SAS Programming

Do loop for nonconsecutive number

Visiting — Sat, 08 Jul 2023 22:45:20 GMT

I am trying to develop a do loop for nonconsecutive number like:

1 to 45, plus 101, 105

How to writhe the code?

I tried %do i=1 % to 45, 101, 105, but doesn't work. Any suggestion? Thank you!

Re: Do loop for nonconsecutive number

SASKiwi — Sun, 09 Jul 2023 01:32:04 GMT

Just create a separate loop variable:

%do i=1 %to 47;
  %if &i <= 45 %then %let j = &i;
  %else %if &i = 46 %then %let j = 101;
  %else %if &i = 47 %then %let j = 105;
    %put j = &j;
  %* more statements;
%end;

Re: Do loop for nonconsecutive number

Tom — Sun, 09 Jul 2023 03:12:28 GMT

@Visiting wrote:

I am trying to develop a do loop for nonconsecutive number like:

1 to 45, plus 101, 105

How to writhe the code?

I tried %do i=1 % to 45, 101, 105, but doesn't work. Any suggestion? Thank you!

That is easy to do with a DO loop.

do i=1 to 45,101,105 ;

It is harder with a macro %DO loop as the macro %DO statement is not as powerful as the data step DO loop.

Re: Do loop for nonconsecutive number

ballardw — Mon, 10 Jul 2023 19:53:38 GMT

@Visiting wrote:

I am trying to develop a do loop for nonconsecutive number like:

1 to 45, plus 101, 105

How to writhe the code?

I tried %do i=1 % to 45, 101, 105, but doesn't work. Any suggestion? Thank you!

"Doesn't work" is such a vague description as to be meaningless.

I suspect that you get an ERROR message similar to

ERROR: A character operand was found in the %EVAL function or %IF
       condition where a numeric operand is required.

If so you should include complete code, entire data step, procedure and/or macro definition and the error messages from the log. Copy and paste the text into a text box opened on the forum with the </> icon above the message window. Then possible describe what the result should be as it is impossible to tell from your incomplete snippet

Note that your code is incomplete for the macro language as it should be %to not 'to' with the %do.

The comma is not part of a numeric value so that throws the character operand as %to expects something that resolves to an integer.