邱红文 > Statistics-embedR > Statistics::embedR

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Module Version: v0.10.1   Source  

NAME ^

Statistics::embedR - Object-oriented interface for Statistics::useR.

VERSION ^

Version 0.1.2

SYNOPSIS ^

    use Statistics::embedR;

    my $r = Statistics::embedR->new(); # new() must be called at least once, before call the other method
    $r->eval($stat);                   # execute one statement
    $r->eval($stat1, $stat2);          # execute a list of statements sequentially
    $r->load("GenABEL", "genetics");   # load a list of R library

    $r->R("1");                        # 1
    $r->R("'1'");                      # '1'
    $r->R("a <- 1:3", "a");            # [1, 2, 3]

    my $ary = [3,5,7];
    $r->arry2R($ary, "array");         # array == c(3,5,7)

    $r->sum("c(2,3)");                 # 5, almost all R functions are available automatically
    $r->as_numeric('c("1", "2")');     # [1, 2], calls as.numeric(c("1", "2")) in the R end

DESCRIPTION ^

This module provides an object-oriented interface for Statistics::useR. And provides some additional useful methods for invoking R.

Almost all R functions are automatically available for you. If the R functions have dots in the name, you can call it with underscore from Perl instead, since Perl don't let you define a method with the name containing dots.

METHODS ^

new

This method creates a Statistics::embedR instance. But you can call it as many times as you want, since it'll only keep one copy of the instance during the life time of the whole program. And you have to call it at least once before you can call the other methods provided by this module.

eval LIST

This method executes a list of R statements sequentially given by LIST.

load LIST

This method loads a list of R libraries given by LIST.

R LIST

This method executes a list of R statements given by LIST, and return the value of the last statement in a somewhat usefull way by some transformation, so that vector with the length 1 returns as a scalar, a vecotr with the length other than 1 returns as a ARRAY reference, and other things returns as a HASH reference.

arry2R SRC, DEST

This method convert a ARRAY ref given by SRC to a R vector, whose name is given by DEST.

AUTHOR ^

Hongwen Qiu, <qiuhongwen at gmail.com>

BUGS ^

Please report any bugs or feature requests to bug-statistics-embedr at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Statistics-embedR. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.

COPYRIGHT AND LICENSE ^

Copyright (c) 2010, 2011 Hongwen Qiu.

This program is free software; you can redistribute it and/or modify it under the terms of either: the GNU General Public License as published by the Free Software Foundation; or the Artistic License.

See http://dev.perl.org/licenses/ for more information.

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