How to export R matrix object to .txt file

Question

I have a R object say:

mat <- matrix(1:100,nrow=20)

I want to send this matrix to .txt file so that the exported .txt file contains 20 rows and 5 columns. Is there easy way to do this?

Thanks in advance,

Answer 1

No packages required:

write.table(mat, file="mymatrix.txt", row.names=FALSE, col.names=FALSE)

This will use space as a separator, but you can also add sep = ... if you prefer tabs or any other delimiters (replace ... with your desired delimiter, of course).

Answer 2

The documentation is a great resource. :)

library(MASS)
mat <- matrix(1:100,nrow=20)
write.matrix(mat,'/path/to/file.txt',sep = "\t")