Bush
Sent: Wednesday, June 15, 2005 11:41 AM
To: r-help@stat.math.ethz.ch
Subject: [R] need help on computing double summation
Dear helpers in this forum,
This is a clarified version of my previous
questions in this forum. I really need your generous
help on this issue.
Suppose I
Dear helpers in this forum,
This is a clarified version of my previous
questions in this forum. I really need your generous
help on this issue.
Suppose I have the following data set:
id x y
023 1 2
023 2 5
023 4 6
023 5 7
412 2 5
412 3 4
412 4 6
412 7 9
220 5 7
220 4 8
220 9
Sent: Wednesday, June 15, 2005 11:41 AM
To: r-help@stat.math.ethz.ch
Subject: [R] need help on computing double summation
Dear helpers in this forum,
This is a clarified version of my previous
questions in this forum. I really need your generous
help on this issue.
Suppose I have