Sum every 3 consecutive numbers in a column Post: 302871501

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lire::sum

Sum(3pm)						  LogReport's Lire Documentation						  Sum(3pm)

NAME

       Lire::Sum - Lire class that implements the sum operator

SYNOPSIS

	use Lire::Sum

DESCRIPTION

       Class that implements the sum operator. This operator will compute the field's sum in a group of DLF records.

       It's possible to compute a weighted sum in which each value is first multiplied by the value of another DLF field.

       Its also possible to express the count as a ratio of the total count for the group or table.

METHODS

   new( %params )
       Creates a new Lire::Count object. In addition to the values supported by its parents, the weight and ratio attributes will be initialized
       to the values specified in the %params argument.

   weight( [$new_weight] )
       Returns the DLF field's name by which the values will be multiplied before being summed.

       You can change the weight field by specifying a new name as the $new_weight parameter. Use undef to remove the use of a weighting field.

   ratio([$new_ratio])
       Returns how the sum will be expressed. This can one of three possible values:

       none
	   Default. The absolute sum will be used.

       group
	   The sum will be expressed as a percentage of the group's sum.

       table
	   The sum will be expressed as a percentage of the table's total sum.

SEE ALSO

       zLire::ReportSpec(3pm), Lire::ReportOperator(3pm), Lire::Aggregator(3pm), Lire::Aggregate(3pm).

AUTHOR

	 Francis J. Lacoste <flacoste@logreport.org>

VERSION

       $Id: Sum.pm,v 1.17 2008/03/09 19:27:31 vanbaal Exp $

COPYRIGHT

       Copyright (C) 2001, 2002 Stichting LogReport Foundation LogReport@LogReport.org

       This file is part of Lire.

       Lire is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free
       Software Foundation; either version 2 of the License, or (at your option) any later version.

       This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.

       You should have received a copy of the GNU General Public License along with this program (see COPYING); if not, check with
       http://www.gnu.org/copyleft/gpl.html.

Lire 2.1.1							    2008-03-09								  Sum(3pm)