, 2006 11:48 AM
Subject: [R] optimal way to compute matrix subtotals?
Hi!
I have large matrices, one column per variable and I have a vector
of factors / grouping symbols. Then I am computing subtotals for the
groups but it takes pretty long and thus I wanted to ask if there is
a better way
Hi!
I have large matrices, one column per variable and I have a vector of factors /
grouping symbols. Then I am computing subtotals for the groups but it takes
pretty long and thus I wanted to ask if there is a better way to do it or if
this is already the best way:
subTotals - function(x,
On Fri, 12 May 2006, Werner Wernersen wrote:
Hi!
I have large matrices, one column per variable and I have a vector of
factors / grouping symbols. Then I am computing subtotals for the groups
but it takes pretty long and thus I wanted to ask if there is a better
way to do it or if this
]
To: r-help@stat.math.ethz.ch
Subject:[R] optimal way to compute matrix subtotals?
Hi!
I have large matrices, one column per variable and I have a vector of
factors / grouping symbols. Then I am computing subtotals for the
groups but it takes pretty long and thus I
/biostat/
http://www.student.kuleuven.be/~m0390867/dimitris.htm
- Original Message -
From: Werner Wernersen [EMAIL PROTECTED]
To: r-help@stat.math.ethz.ch
Sent: Friday, May 12, 2006 11:48 AM
Subject: [R] optimal way to compute matrix subtotals?
Hi!
I have large matrices, one
