R: Write a Matrix or Data Frame
write.matrix {MASS}R Documentation
Write a Matrix or Data Frame
Description
Writes a matrix or data frame to a file or the console, using column
labels and a layout respecting columns.
Usage
write.matrix(x, file = "", sep = " ", blocksize)
Arguments
x
matrix or data frame.
file
name of output file. The default ("") is the console.
sep
The separator between columns.
blocksize
If supplied and positive, the output is written in blocks of
blocksize rows. Choose as large as possible consistent with
the amount of memory available.
Details
If x is a matrix, supplying blocksize is more
memory-efficient and enables larger matrices to be written, but each
block of rows might be formatted slightly differently.
If x is a data frame, the conversion to a matrix may negate the
memory saving.
Side Effects
A formatted file is produced, with column headings (if x has them)
and columns of data.
References
Venables, W. N. and Ripley, B. D. (2002)
Modern Applied Statistics with S. Fourth edition. Springer.
See Also
write.table
[Package MASS version 7.2-44 Index]
