i have this error when i try to use kmeans() function Error in sample.int(m, k) : invalid first argument ...what's the problem
km<-kmeans(df,4)
I would compare the format of df to the format of x in the example given in ?kmeans:
df
x
?kmeans
x <- rbind(matrix(rnorm(100, sd = 0.3), ncol = 2), matrix(rnorm(100, mean = 1, sd = 0.3), ncol = 2)) colnames(x) <- c("x", "y") (cl <- kmeans(x, 2))
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