topic How do i use an array to count up the values in this situation? in SAS Programming

How do i use an array to count up the values in this situation?

Hello_there — Fri, 29 Sep 2023 17:12:42 GMT

Hello, the purpose of this is data manipulation practice.

I'm trying to use an array to count up the X's in the val1, val2, val3 variables. I'm trying to count across.

data have;
infile datalines dsd dlm=",";
 	input subject $ val1 $ val2 $ val3 $;
 datalines;
 001, x, , ,
 002, x, x, ,
 003, x, , , 
 004, , , ,
 005, x, x, x
 ; 
 run;

results should be:

subject sum

001 1

002 2

003 1

004 0

005 3

Re: How do i use an array to count up the values in this situation?

Tom — Fri, 29 Sep 2023 17:16:46 GMT

No need for an array.

data want;
  set have;
  sum = 3 - cmiss(of var1-var3);
  keep subject sum;
run;

Re: How do i use an array to count up the values in this situation?

Hello_there — Fri, 29 Sep 2023 17:19:19 GMT

Thanks for the quick solution. I would like to use an array bc it would make it more flexible for when i re run the code for different variable amounts.

Re: How do i use an array to count up the values in this situation?

Tom — Fri, 29 Sep 2023 17:38:22 GMT

@Hello_there wrote:
Thanks for the quick solution. I would like to use an array bc it would make it more flexible for when i re run the code for different variable amounts.

That would allow you to use the DIM() function.

array list var1-var3;
sum=dim(list)-cmiss(of list[*]);

Re: How do i use an array to count up the values in this situation?

ballardw — Fri, 29 Sep 2023 17:44:50 GMT

@Hello_there wrote:
Thanks for the quick solution. I would like to use an array bc it would make it more flexible for when i re run the code for different variable amounts.

Provide a more realistic set of values then. And maybe variable names. Many of the functions that do some of this sort of stuff will work with a variable list, such as @Tom 's CMISS example.

There are functions that work well for single character values in a similar manner, Countc. But if you specific words then examples are needed.

The basic approach if you really need to examine each value is going to look like:

Counter=0;
do i= 1 to dim(arrayname);
   counter = sum(counter,<condition involving arrayname[i]>);
end;

What that condition may look like depends a whole lot on the values.

Re: How do i use an array to count up the values in this situation?

Hello_there — Fri, 29 Sep 2023 17:49:43 GMT

Brilliant!

Re: How do i use an array to count up the values in this situation?

Hello_there — Fri, 29 Sep 2023 17:51:41 GMT

Understandable.

For my use case, the example i provided is the general structure of the problem i encounter a lot. The only things that needs to change is the amount of variables i put in the array.

That being said, i will consider your approach also. Thanks