a <- list(one=matrix(rnorm(20), 5, 4), two=matrix(rnorm(20, 3,
0.5),5,4))
lapply(a, function(x){
cbind(x, rowSums(x))
})
Cheers,
Thierry
------------------------------------------------------------------------
----
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature
and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics,
methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium
tel. + 32 54/436 185
[EMAIL PROTECTED]
www.inbo.be
Do not put your faith in what statistics say until you have carefully
considered what they do not say. ~William W. Watt
A statistical analysis, properly conducted, is a delicate dissection of
uncertainties, a surgery of suppositions. ~M.J.Moroney
-----Oorspronkelijk bericht-----
Van: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Namens Lauri Nikkinen
Verzonden: vrijdag 11 januari 2008 14:09
Aan: [EMAIL PROTECTED]
Onderwerp: [R] How to add rowSums into list?
Hi R-users,
I have a list
a <- list(one=matrix(rnorm(20), 5, 4), two=matrix(rnorm(20, 3,
0.5),5,4))
How to add rowSums (calculated using lapply) to corresponding matrix
in this list
lapply(a, function(x) rowSums(x))
??
-Lauri
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