write
Write Data to a File
The data (usually a matrix) x are written to file file.
If x is a two-dimensional matrix you need to transpose it to get the
columns in file the same as those in the internal representation.
- Keywords
- file, connection
Usage
write(x, file = "data", ncolumns = if(is.character(x)) 1 else 5, append = FALSE, sep = " ")Arguments
- x
- the data to be written out, usually an atomic vector.
- file
- A connection, or a character string naming the file to write to.
If
"", print to the standard output connection. unix If it is"|cmd", the output is piped to the command given by ‘cmd’. - ncolumns
- the number of columns to write the data in.
- append
- if
TRUEthe dataxare appended to the connection. - sep
- a string used to separate columns. Using
sep = "\t"gives tab delimited output; default is" ".
References
Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.
See Also
write is a wrapper for cat, which gives further
details on the format used.
save for writing any R objects,
write.table for data frames,
and scan for reading data.
Examples
library(base)
# create a 2 by 5 matrix
x <- matrix(1:10, ncol = 5)
# the file data contains x, two rows, five cols
# 1 3 5 7 9 will form the first row
write(t(x))
# Writing to the "console" 'tab-delimited'
# two rows, five cols but the first row is 1 2 3 4 5
write(x, "", sep = "\t")
unlink("data") # tidy up
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