Hello,
I have been trying to figure this one out, but don't seem to go
anywhere. I have a function like this:
a = function(t) {
max(0,t+1)
}
very simple, but if I pass a vector of n values to this function I
expect n evaluations of max and instead I get only one value (the
largest value of them all..). Is there anyway to do this without
invoking a for loop?
thanks,
Jorge
A question about function behavior
6 messages · A.J. Rossini, Alexandre Brito, Sundar Dorai-Raj +2 more
Perhaps by using apply? What do you think that max(0,c(1,2,3,4)+1) should return?
On 4/20/05, Jorge Ahumada <jahumada at usgs.gov> wrote:
Hello,
I have been trying to figure this one out, but don't seem to go
anywhere. I have a function like this:
a = function(t) {
max(0,t+1)
}
very simple, but if I pass a vector of n values to this function I
expect n evaluations of max and instead I get only one value (the
largest value of them all..). Is there anyway to do this without
invoking a for loop?
thanks,
Jorge
______________________________________________ R-help at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
best, -tony "Commit early,commit often, and commit in a repository from which we can easily roll-back your mistakes" (AJR, 4Jan05). A.J. Rossini blindglobe at gmail.com
I think you want this:
b<- function(t) {pmax(0,t+1)}
alex
----- Original Message -----
From: "Jorge Ahumada" <jahumada at usgs.gov>
To: <r-help at stat.math.ethz.ch>
Sent: Wednesday, April 20, 2005 6:02 PM
Subject: [R] A question about function behavior
Hello,
I have been trying to figure this one out, but don't seem to go
anywhere. I have a function like this:
a = function(t) {
max(0,t+1)
}
very simple, but if I pass a vector of n values to this function I
expect n evaluations of max and instead I get only one value (the
largest value of them all..). Is there anyway to do this without
invoking a for loop?
thanks,
Jorge
______________________________________________ R-help at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
Jorge Ahumada wrote on 4/20/2005 12:02 PM:
Hello,
I have been trying to figure this one out, but don't seem to go
anywhere. I have a function like this:
a = function(t) {
max(0,t+1)
}
very simple, but if I pass a vector of n values to this function I
expect n evaluations of max and instead I get only one value (the
largest value of them all..). Is there anyway to do this without
invoking a for loop?
thanks,
Jorge
I think you want ?pmax instead of ?max. --sundar
Thank you very much for all the answers. pmax works great! Jorge
On Apr 20, 2005, at 1:55 PM, Alexandre Brito wrote:
I think you want this:
b<- function(t) {pmax(0,t+1)}
alex
----- Original Message -----
From: "Jorge Ahumada" <jahumada at usgs.gov>
To: <r-help at stat.math.ethz.ch>
Sent: Wednesday, April 20, 2005 6:02 PM
Subject: [R] A question about function behavior
Hello,
I have been trying to figure this one out, but don't seem to go
anywhere. I have a function like this:
a = function(t) {
max(0,t+1)
}
very simple, but if I pass a vector of n values to this function I
expect n evaluations of max and instead I get only one value (the
largest value of them all..). Is there anyway to do this without
invoking a for loop?
thanks,
Jorge
______________________________________________ R-help at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide!
Hello
Consider ?pmax instead of max
a <- function(t){
pmax(0,t+1)
}
a( c(1,2,-4,2))
Romain
Le 20.04.2005 19:02, Jorge Ahumada a ??crit :
Hello,
I have been trying to figure this one out, but don't seem to go
anywhere. I have a function like this:
a = function(t) {
max(0,t+1)
}
very simple, but if I pass a vector of n values to this function I
expect n evaluations of max and instead I get only one value (the
largest value of them all..). Is there anyway to do this without
invoking a for loop?
thanks,
Jorge
~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~ ~~~~~~ Romain FRANCOIS - http://addictedtor.free.fr ~~~~~~ ~~~~ Etudiant ISUP - CS3 - Industrie et Services ~~~~ ~~ http://www.isup.cicrp.jussieu.fr/ ~~ ~~~~ Stagiaire INRIA Futurs - Equipe SELECT ~~~~ ~~~~~~ http://www.inria.fr/recherche/equipes/select.fr.html ~~~~~~ ~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~