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.IX Title "Sum 3pm"
.TH Sum 3pm 2025-09-28 "Lire 2.1.1" "LogReport's Lire Documentation"
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.SH NAME
Lire::Sum \- Lire class that implements the sum operator
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\& use Lire::Sum
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
Class that implements the sum operator. This operator will compute the
field\*(Aqs sum in a group of DLF records.
.PP
It\*(Aqs possible to compute a weighted sum in which each value is first
multiplied by the value of another DLF field.
.PP
Its also possible to express the count as a ratio of the total count
for the group or table.
.SH METHODS
.IX Header "METHODS"
.ie n .SS "new( %params )"
.el .SS "new( \f(CW%params\fP )"
.IX Subsection "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 \f(CW%params\fR argument.
.SS "weight( [$new_weight] )"
.IX Subsection "weight( [$new_weight] )"
Returns the DLF field\*(Aqs name by which the values will be multiplied
before being summed.
.PP
You can change the weight field by specifying a new name as the
\&\f(CW$new_weight\fR parameter. Use undef to remove the use of a weighting
field.
.SS ratio([$new_ratio])
.IX Subsection "ratio([$new_ratio])"
Returns how the sum will be expressed. This can one of three possible
values:
.IP none 4
.IX Item "none"
Default. The absolute sum will be used.
.IP group 4
.IX Item "group"
The sum will be expressed as a percentage of the group\*(Aqs sum.
.IP table 4
.IX Item "table"
The sum will be expressed as a percentage of the table\*(Aqs total sum.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBzLire::ReportSpec\fR\|(3pm), \fBLire::ReportOperator\fR\|(3pm), \fBLire::Aggregator\fR\|(3pm), \fBLire::Aggregate\fR\|(3pm).
.SH AUTHOR
.IX Header "AUTHOR"
.Vb 1
\&  Francis J. Lacoste <flacoste@logreport.org>
.Ve
.SH VERSION
.IX Header "VERSION"
\&\f(CW$Id:\fR Sum.pm,v 1.17 2008/03/09 19:27:31 vanbaal Exp $
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright (C) 2001, 2002 Stichting LogReport Foundation LogReport@LogReport.org
.PP
This file is part of Lire.
.PP
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.
.PP
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.
.PP
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.