Hi!
Looks like get() doesn't work. Here is what I do and what I get (still
in the loop):
names(get(paste(names(file)[3], name.num, sep="_")))<-
levels(factor(file[[3]]))
Error in names(get(paste(names(file)[3], name.num, sep = "_")))<-
levels(factor(file[[3]])) :
could not find function "get<-"
print(names(get(paste(names(file)[3], name.num, sep="_")))) #4 iterations; I
wanted to test this part
NULL
NULL
NULL
NULL
Does anyone has an idea about it?
Thanks
Ivan
Le 2/2/2010 19:38, Chris Campbell a écrit :
On Tue, Feb 2, 2010 at 11:44, Ivan Calandra
<ivan.calan...@uni-hamburg.de> wrote:
Hi David,
Thanks for your answer.
But I don't really see how I can extend it with my real data.
The thing is that I have more than 3 names and 1 value for each name.
Moreover, each is different from one run to another. That is why I was
trying with a modification of names(). Also to be noted is that I simplified
the "name" in assign(); I actually have 2 other variables that will be
pasted to create the name.
Here is my code (I kept only what is important for that part):
----
library(WRS)
seq.num<- seq(7,10,1) #column (variable) indexes to be used as
numerical variables
# fac2list() separates the data from file[,k] into groups from levels in
file[3] and store into list mode.
for(i in 1:length(seq.num)) {
k<- seq.num[i]
name.num<- names(file)[k]
assign(paste(names(file)[3], name.num, sep="_"), fac2list(file[,k],
file[3]))
names(paste(names(file)[3], name.num, sep="_"))<-
levels(factor(file[[3]])) #that line doesn't work, but I would like
something in this direction
}
----
Sounds like a job for 'get'. Try this (untested):
names(get(paste(names(file)[3], name.num, sep="_")))
Good luck
Thanks in advance for your help.
Regards,
Ivan
Le 2/1/2010 18:47, David Winsemius a écrit :
On Feb 1, 2010, at 12:33 PM, Ivan Calandra wrote:
I have a follow-up question:
I use assign() to store some value in my paste()-created object as
suggested:
for (i in 1:3) {
assign(paste("object", i, sep=""), c("a", "b", "c"))
}
Then I would like to change the names of the elements of that object
within the loop. Since it is all in a loop, I cannot give the name of the
object manually by doing something like: names(object1)<- c("tooth",
"bone", "species").
The only thing I can give to names() is paste("object", i, sep=""), which
doesn't work.
Any idea of how to do it?
for (i in paste("object", 1:3, sep="")) {
+ assign(i, c("tooth"="a", "bone"="b", "species"="c") )
+ }
object1
tooth bone species
"a" "b" "c"
Thanks in advance
Ivan
Le 2/1/2010 17:14, David Winsemius a écrit :
Upon reading it yesterday, it appeared as it would have required some
serious testing and there was no data on which to do any work. You were
clearly not taking the time to isolate the problem and construct a dataset.
But who knows? When you say "What I want to do is. ... ,I would like the
name of the list to be created in the loop too", maybe all you needed was to
be pointed to was:
?assign
But if that were the case, then you lost most of your audience along the
way with a bunch of unneeded and obscure code.
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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--
Ivan CALANDRA
PhD Student
University of Hamburg
Biozentrum Grindel und Zoologisches Institut und Museum
Martin-Luther-King-Platz 3
D-20146 Hamburg, GERMANY
+49(0)40 42838 6231
ivan.calan...@uni-hamburg.de
**********
http://www.for771.uni-bonn.de
http://webapp5.rrz.uni-hamburg.de/mammals/eng/mitarbeiter.php
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