Array with multiple possibilities for do loop

Walternate — Tue, 15 Mar 2022 19:41:52 GMT

Hi,

I'm trying to check the consistency of values of a variable across different timepoints.

"Regular" records will have consistency checked for across all 5 timepoints. However, there are some special cases (based on the variable called timepoint) that should only look at CERTAIN timepoints rather than looping through all of them.

Timepoint can represent a single timepoint or up to 2:

Timepoint

1, 2

2, 3

3, 4

4, 5

1, 3

etc.

Essentially what I'd like to do is set up the do-loop so that the iteration is conditional and based on the value of timepoint, ie:

1. If timepoint is missing (regular record) do i = 1 to 5

2. If timepoint = 1, cycle through every timepoint EXCEPT timepoint 1 (so do i = 2 to 5).

Any help is much appreciated.

Re: Array with multiple possibilities for do loop

FreelanceReinh — Tue, 15 Mar 2022 20:25:56 GMT

Hi @Walternate,

You can use the CONTINUE statement to "skip" the values in TIMEPOINT:

data have;
input timepoint $4.;
cards;
.
1
2
3
4
5
1, 2
2, 3
3, 4
4, 5
1, 3
;

data want;
set have;
do i=1 to 5;
  if findw(timepoint,put(i,1.)) then continue;
  /* more code to "check the consistency of values" */
  output; /* <-- just as an example */
end;
run;

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Array with multiple possibilities for do loop

Re: Array with multiple possibilities for do loop