have a look at ?unlist(); you can also use sapply() in this case instead
of lapply().
Best,
Dimitris
voidobscura wrote:
Hi all, I have been experimenting with writing my own matrix column sum
function. I want it to return a list.
csum<-function(m)
{
a = data.frame(m)
s = lapply(a,sum)
return(s)
}
I wish to use the same code up until the return(s) that I have listed above.
The problem is that s, I believe, is a data frame (looks like this:)
$X1
[1] 148
$X2
[1] 156
$X3
[1] 164
$X4
[1] 172
$X5
[1] 180
I would like a vector with these values (148,156,etc). How may I do this?
tia!
--
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center
Address: PO Box 2040, 3000 CA Rotterdam, the Netherlands
Tel: +31/(0)10/7043478
Fax: +31/(0)10/7043014
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