[R] using for variable as rowname
(Ted Harding)
Ted.Harding at manchester.ac.uk
Wed Sep 17 17:02:22 CEST 2008
On 17-Sep-08 14:22:11, Ralikwen wrote:
>
> Is there a way to use the cycle variable for rowname?
>
> v=1:6
> for (a in 1:3){
> for (b in 4:5) {
> v=rbind(v,a.b=1)
> }
> }
> v
>
> This above obviously does not work, but I couldn't find out how to use
> a and
> b to construct a rowname like 14, 15, 24, 25.
> Thanks for the help.
> Balazs
I don't know of a way to construct a paramater-name out of variable values
(so that "a.b" is a dynamic name as intended in your v=rbind(v,a.b=1) ),
though possibly someone else does!
However, something along the following lines would work (you construct
a vector of row names, along with v, within the loop, and then apply
it at the end):
v<-(1:6)
a.b<-"0"
for (a in 1:3){
for (b in 4:5) {
a.b<-c(a.b,paste(a,".",b,sep=""))
v=rbind(v,1)
}
}
rownames(v)<-a.b
v
# [,1] [,2] [,3] [,4] [,5] [,6]
# 0 1 2 3 4 5 6
# 1.4 1 1 1 1 1 1
# 1.5 1 1 1 1 1 1
# 2.4 1 1 1 1 1 1
# 2.5 1 1 1 1 1 1
# 3.4 1 1 1 1 1 1
# 3.5 1 1 1 1 1 1
Ted.
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Date: 17-Sep-08 Time: 16:02:18
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