NAME

Statistics::R::REXP::Language - an R language vector

VERSION

version 1.0002

SYNOPSIS

    use Statistics::R::REXP::Language
    
    # Representation of the R call C<mean(c(1, 2, 3))>:
    my $vec = Statistics::R::REXP::Language->new([
        Statistics::R::REXP::Symbol->new('mean'),
        Statistics::R::REXP::Double->new([1, 2, 3])
    ]);
    print $vec->elements;

DESCRIPTION

An object of this class represents an R language vector ("LANGSXP"). These objects represent calls (such as model formulae), with first element a reference to the function being called, and the remainder the actual arguments of the call. Names of arguments, if given, are recorded in the 'names' attribute (itself as Statistics::R::REXP::Character vector), with unnamed arguments having name ''. If no arguments were named, the language objects will not have a defined 'names' attribute.

METHODS

"Statistics::R::REXP:Language" inherits from Statistics::R::REXP::Vector, with the added restriction that its first element has to be a Statistics::R::REXP::Symbol or another "Language" instance. Trying to create a Language instance that doesn't follow this restriction will raise an exception.

sexptype

SEXPTYPE of language vectors is "LANGSXP".

to_pl

Perl value of the language vector is an array reference to the Perl values of its "elements". (That is, it's equivalent to "map {$_-"to_pl}, $vec->elements>.

BUGS AND LIMITATIONS

Classes in the "REXP" hierarchy are intended to be immutable. Please do not try to change their value or attributes.

There are no known bugs in this module. Please see Statistics::R::IO for bug reporting.

SUPPORT

See Statistics::R::IO for support and contact information.

AUTHOR

Davor Cubranic <cubranic@stat.ubc.ca>

COPYRIGHT AND LICENSE

This software is Copyright (c) 2017 by University of British Columbia.

This is free software, licensed under:

  The GNU General Public License, Version 3, June 2007