foreign (version 0.8-11)

S3 read functions: Read an S3 Binary File

Description

Reads binary data files or data.dump files that were produced in S version 3.

Usage

data.restore(file, print = FALSE, verbose = FALSE, env = .GlobalEnv)
  read.S(file)

Arguments

file

the filename of the S-PLUS data.dump or binary file.

print

whether to print the name of each object as read from the file.

verbose

whether to print the name of every subitem within each object.

env

environment within which to create the restored object.

Value

• an R version of the S3 object.

Details

read.S can read the binary files produced in most recent versions of S-PLUS on either Windows (versions 3.x, 4.x, 2000) or Unix (version 3.x with 4 byte integers). It automatically detects whether the file was produced on a big- or little-endian machine and adapts itself accordingly. data.restore can read a similar range of files produced by data.dump, for newer versions of S-PLUS, those from data.dump(....., oldStyle=TRUE).

Not all S3 objects can be handled in the current version. The most frequently encountered exceptions are functions and expressions; you will also have trouble with objects that contain model formulas. In particular, comments will be lost from function bodies, and the argument lists of functions will often be changed.

Examples

read.S(file.path("_Data", "myobj"))
data.restore("dumpdata", print = TRUE)