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# Creating variable that shows which number of subgroup

I have a dataset that looks like this (except for the last variable) and am wanting to create that last variable.

Essentially, the NUMBER variable is nested in ID, and one person (ID) can have multiple NUMBERs that can last up to 2000 observations, and all I want to do is create a variable that says which order NUMBER it is for a specific ID, for the entire dataset.

Here is what the dataset looks like:

ID         NUMBER          VARABLE_DESIRED

1            100                   1

1            100                   1

1            100                   1

1            101                    2

1            102                    2

1            103                    3

2            104                    1

2            104                     1

2            105                     2

2             106                    3

2             106                    3

3             119                     1

3             121                    2

4              125                  1

4               125                 1

Thank you!

Accepted Solutions
Solution
‎01-15-2017 02:48 PM
PROC Star
Posts: 8,150

## Re: Creating variable that shows which number of subgroup

Assuming you incorrectly specified the variable_desired for id=1, number=102, then the following will do what you want:

data have;
input ID NUMBER;
cards;
1 100
1 100
1 100
1 101
1 102
1 103
2 104
2 104
2 105
2 106
2 106
3 119
3 121
4 125
4 125
;
data want;
set have;
by id number;
if first.id then variable_desired=1;
else if first.number then variable_desired+1;
run;

Art, CEO, AnalystFinder.com

All Replies
Solution
‎01-15-2017 02:48 PM
PROC Star
Posts: 8,150

## Re: Creating variable that shows which number of subgroup

Assuming you incorrectly specified the variable_desired for id=1, number=102, then the following will do what you want:

data have;
input ID NUMBER;
cards;
1 100
1 100
1 100
1 101
1 102
1 103
2 104
2 104
2 105
2 106
2 106
3 119
3 121
4 125
4 125
;
data want;
set have;
by id number;
if first.id then variable_desired=1;
else if first.number then variable_desired+1;
run;

Art, CEO, AnalystFinder.com

New Contributor
Posts: 2

## Re: Creating variable that shows which number of subgroup

You assumed right thank you so much for this!
☑ This topic is solved.