R how to bind character vector with matrix numbers

Question

I have a 3*4 matrix (called S1), let's say:

1 2 3 4
5 6 7 8
9 1 1 1

and I have a character vector called 'frequency':

CX
XU
UK

The idea is to bind them such as

CX 1 2 3 4
XU 5 6 7 8
UK 9 1 1 1

I have tried using cbind as

result = cbind(frequency, S1)

But the result that R produces is

"CX" "1"  "2" "3" "4" 
"XU" "5"  "6" "7" "8"
"UK" "9"  "1" "1" "1" 

Any idea how to get rid of the parenthesis?

Answer 1

Generate data

frequency <- c("CU", "XU", "UK")
S1 <- matrix(c(1:8,9,1,1,1), nrow = 3, ncol = 4, byrow=TRUE)

One can use this

cbind.data.frame(freq=frequency,s1=S1)

Output

  freq s1.1 s1.2 s1.3 s1.4
1   CU    1    2    3    4
2   XU    5    6    7    8
3   UK    9    1    1    1

Answer 2

S1 is matrix and matrix can hold data of only one type. Since frequency is a character vector it coerces S1 values to character as well.

Turn S1 to dataframe

cbind(frequency, data.frame(S1))

OR

cbind.data.frame(frequency, S1)

Answer 3

A matrix only accepts one type of data, in your case transforming numeric to character. I recomend you to use the data structure of a data frame, the indexing is the same as a matrix. Try:

result = cbind(frequency, as.dataframe(S1))