write {base}R Documentation

Write Data to a File

Description

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.

Usage

write(x, file = "data",
      ncolumns = if(is.character(x)) 1 else 5,
      append = FALSE)

Arguments

x the data to be written out.
file A connection, or a character string naming the file to write to. If "", print to the standard output connection. 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 TRUE the data x is appended to file file.

References

Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988) The New S Language. Wadsworth & Brooks/Cole.

See Also

save for writing any R objects, write.table for data frames, and scan for reading data.

Examples

# create a 2 by 5 matrix
x <- matrix(1:10,ncol=5)

# the file data contains x, two rows, five cols
# 1 3 5 6 9 will form the first row
write(t(x))

# the file data now contains the data in x,
# two rows, five cols but the first row is 1 2 3 4 5
write(x)
unlink("data") # tidy up

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