## Summay a binary flag field

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Super Contributor
Posts: 358

# Summay a binary flag field

Hi All:

Quick question:  I have a 19 byte character field that contains only '0's and '1's.   Is there a quick (simple) way to sum the numerals in the field

to see how many of them are set to '1'.  This way if the sum is > 1 I know there is more than 1 byte not 'zero'.  Unfortunately, the field is a

character field and I can't change that.

Accepted Solutions
Solution
‎10-22-2014 11:28 AM
Super User
Posts: 13,563

## Re: Summay a binary flag field

ones = count(stringvar,'1');

should do it

All Replies
Posts: 1,270

## Re: Summay a binary flag field

data have;
input var \$ 19.;
datalines;
0
0
1
1
0
1
0
0
;

data want(keep=cnt_one);
set have end=eof;
if strip(var)='1' then cnt_one+1;
if eof then output;
run;

Super Contributor
Posts: 358

## Re: Summay a binary flag field

Hi:

The data is in a variable formatted like:  '0001001000110001000'   and I basically need to count the number of '1's.

I could use an array but that is messy.  Hoping for something simple.

Thanks.

Solution
‎10-22-2014 11:28 AM
Super User
Posts: 13,563

## Re: Summay a binary flag field

ones = count(stringvar,'1');

should do it

Super Contributor
Posts: 358

## Re: Summay a binary flag field

Bingo - I knew there would be something simple!

Thanks.

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