Dear R-Helpers,
I performed kmeans clustering on the following data set(y):
YEAR PRODUCTS
1 10
2 42
3 25
4 42
5 40
6 45
7 44
8 47
9 42
with this code:
cluster<-kmeans(y[,c("YEAR","PRODUCTS")],3).
Every time i run this code the components of cluster ("mean" "vector")
changed value,i.e.
First run:
Cluster means
YEAR PRODUCTS
1 7.500000 44.50000
2 3.666667 41.33333
3 2.000000 17.50000
Clustering vector:
1 2 3 4 5 6 7 8 9
3 2 3 2 2 1 1 1 1
Second run:
Cluster means
YEAR PRODUCTS
1 2.000000 17.50000
2 3.666667 41.33333
3 7.500000 44.50000
Clustering vector:
1 2 3 4 5 6 7 8 9
1 2 1 2 2 3 3 3 3
How can i modify, if it is possible, the code to obtain the same value
("mean" "vector") every time i'll run the code?
Thank you in advance.
Sergio Della Franca.
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