Hi,
the problem is not about the environment, but about the
paste(c("tot", i), collapse = "")
which is not recognized as an object.
Maybe assign() could do the trick
You could also do it this way (though it's not exactly what you want,
but it might be better):
toto <- function(x,y){
tot <- vector(mode="list", length=(y-x+1)) ##create an empty list
of correct length
for (i in x:y) {
tot[[i]] <- (i*2) ##store each value into each element of the list
}
return(tot) ##return the list
}
HTH,
Ivan
Le 5/20/2010 17:54, arnaud Gaboury a écrit :
Dear group,
I am trying to write functions, but as a beginner, everything is not so
obvious.
Let's say I want the results in a list of elemts like this :
tot1, tot2, etc
Here is a function:
toto<-
function(x,y)
{
for(i in x:y){
paste(c("tot",i),collapse="")<-(i*2)
}
}
If I type this :
toto(1,5)
I get this message error:
Error in paste(c("tot", i), collapse = "")<- (i * 2) :
target of assignment expands to non-language object
How can I write it to get the result I want (i.e tot1, tot2... with tot1=2,
tot2=4...) in my environment?
TY for any help
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Ivan CALANDRA
PhD Student
University of Hamburg
Biozentrum Grindel und Zoologisches Museum
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+49(0)40 42838 6231
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**********
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