BookmarkSubscribeRSS Feed
zehross
Calcite | Level 5

Hi everyone,

I have a quick question on how to delete observations.

Say I have a data set as following:

data example;

input y x1 x2 x3 x4 x5;

cards;

5 1 2 3 . 5

2 4 . . 6 8

;

run;

I want to delete rest of the observations after the first encounter of a missing value. For example I want the following result.

5 1 2 3 . .

2 4 . . . .

What would the code look like?

I tried using do loop with delete statement but it didn't quite work.

I tried

array x{5} x1 x2 x3 x4 x5;

do i=1 to 5;

if x=. then delete x to x[5];

output;

end;

Any help would be appreciated. Thanks!

2 REPLIES 2
Tom
Super User Tom
Super User

You could use two do loops. One to find the first missing value and the second to clear out the end of the array.

data want;

  set have;

  array x x1-x5;

  do i=1 to dim(x) while (not missing(x(i))); end;

  do i=i to dim(x); x(i)=.; end;

run;

Haikuo
Onyx | Level 15

Or one array do loop:

data example;

input y x1 x2 x3 x4 x5;

cards;

5 1 2 3 . 5

2 4 . . 6 8

;

run;

data want;

set example;

array v y x1-x5;

do _n_=1 to dim(v)-1;

if _n_ < dim(v) then if missing(v(_n_)) then call missing (v(_n_+1));

end;

run;

proc print;run;

Kindly Regards,

Haikuo

sas-innovate-2024.png

Join us for SAS Innovate April 16-19 at the Aria in Las Vegas. Bring the team and save big with our group pricing for a limited time only.

Pre-conference courses and tutorials are filling up fast and are always a sellout. Register today to reserve your seat.

 

Register now!

How to Concatenate Values

Learn how use the CAT functions in SAS to join values from multiple variables into a single value.

Find more tutorials on the SAS Users YouTube channel.

Click image to register for webinarClick image to register for webinar

Classroom Training Available!

Select SAS Training centers are offering in-person courses. View upcoming courses for:

View all other training opportunities.

Discussion stats
  • 2 replies
  • 425 views
  • 3 likes
  • 3 in conversation