MadSeb MadSeb - 4 months ago 22
R Question

Matrix display without row and column names?

I have this code in R:

seq1 <- seq(1:20)
mat <- matrix(seq1, 2)


and the result is:


[,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [,10]
[1,] 1 3 5 7 9 11 13 15 17 19
[2,] 2 4 6 8 10 12 14 16 18 20



Does R have an option to suppress the display of column names and row names so that I don't get the [,1] [,2] and so on?

Answer

If you want to retain the dimension names but just not print them, you can define a new print function.

print.matrix <- function(m){
write.table(format(m, justify="right"),
            row.names=F, col.names=F, quote=F)
}

> print(mat)
 1  3  5  7  9 11 13 15 17 19
 2  4  6  8 10 12 14 16 18 20
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