Creating a conditional variable or function such that

2 views (last 30 days)
Hi, I'm struggling for hours to do this...
Suppose I have this data:
schoolid classid classsize enrollment newcolumn
1001 1 10 22 11
1001 2 12 22 11
1005 1 14 29 14.5
1005 2 15 29 14.5
1018 1 8 22 22/3
1018 2 4 22 22/3
1018 3 10 22 22/3
.
.
.
I would like to generate a function that gives "newColumn" above.
Plaese help me out. Thanks.

Accepted Answer

Ameer Hamza
Ameer Hamza on 3 Jun 2020
Try this
schoolID = [1001 1001 1005 1005 1018 1018 1018];
enrollment = [22 22 29 29 22 22 22];
grps = findgroups(schoolID);
avg = splitapply(@(x) x(1)/numel(x), enrollment.', grps.');
newcolumn = avg(grps);
  2 Comments
JB
JB on 3 Jun 2020
Wow... Thank you so much! It worked perfectly. I don't know how it worked. I will study closely each codes. Anyways, thanks again!
Ameer Hamza
Ameer Hamza on 4 Jun 2020
I am glad to be of help! Documentation pages will be helpful in understanding this.

Sign in to comment.

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!