On 07.06.2011 16:24, Dominik P.H. Kalisch wrote:
Hi,
I have two matrices of the following form:
cluster (n=18):
12062 1
12063 2
12064 2
12065 3
12066 5
KreisSA (n=2304)
12062
12062
12067
12065
12063
12067
I try to assign the cluster[,2] to KreisSAa by the follwoing loop:
n <- nrow(cluster)
KreisSAa <- numeric()
for(i in 1:n){
KreisSAa[KreisSA == cluster[i,1]] <- cluster[i,2]
}
The result is a vector of the length n=4608 where after the entry 2304
are just NA's
Has someone an idea what I do wrong?
Since we do not know the structure of your objects, we cannot say
easily. You may want to provide
str(cluster)
and
str(KreisSA)
Anyway: I'd just use merge()
Uwe Ligges
Thanks for your help.
Dominik
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and provide commented, minimal, self-contained, reproducible code.
