Error in sample.int(m, k) : invalid first argument

[brahimhm]

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)

[jessecambon]

I would compare the format of df to the format of x in the example given in ?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))