openintro (version 1.7.1)

WriteTable: Write a Data Frame or Matrix to a Text File

Description

The arguments are identical to those of write.table, except the defaults differ: the separator is a tab, does not include quotation marks, and does not use row names by default.

Usage

WriteTable(x, file = "", append = FALSE, quote = FALSE, sep = "\t",
           eol = "\n", na = "NA", dec = ".", row.names = FALSE,
           col.names = TRUE, qmethod = c("escape", "double"),
           fileEncoding = "")

Arguments

x

The object to be written, preferably a matrix or data frame. If not, it is attempted to coerce x to a data frame.

file

Tither a character string naming a file or a connection open for writing. "" indicates output to the console.

append

Logical. Only relevant if file is a character string. If TRUE, the output is appended to the file. If FALSE, any existing file of the name is destroyed.

quote

A logical value (TRUE or FALSE) or a numeric vector. If TRUE, any character or factor columns will be surrounded by double quotes. If a numeric vector, its elements are taken as the indices of columns to quote. In both cases, row and column names are quoted if they are written. If FALSE, nothing is quoted.

sep

Separator for values.

eol

The character(s) to print at the end of each line (row).

na

The string to use for missing values in the data.

dec

The string to use for decimal points in numeric or complex columns: must be a single character.

row.names

Either a logical value indicating whether the row names of x are to be written along with x, or a character vector of row names to be written.

col.names

Either a logical value indicating whether the column names of x are to be written along with x, or a character vector of column names to be written. See the section on CSV files for the meaning of col.names = NA.

qmethod

A character string specifying how to deal with embedded double quote characters when quoting strings.

fileEncoding

Character string: if non-empty declares the encoding to be used on a file (not a connection) so the character data can be re-encoded as they are written.

See Also

write.table

Examples

# NOT RUN {
## To write a CSV file for input to Excel one might use
x <- data.frame(a = I("a \" quote"), b = pi)
WriteTable(x, file = "foo.csv", sep = ",", col.names = NA,
           qmethod = "double")
## and to read this file back into R one needs
read.table("foo.csv", header = TRUE, sep = ",", row.names = 1)
## NB: you do need to specify a separator if qmethod = "double".
# }

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