Initial Commit of AgileBill Open Source
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includes/pear/Image/Graph/Dataset/Trivial.php
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260
includes/pear/Image/Graph/Dataset/Trivial.php
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<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* Image_Graph - PEAR PHP OO Graph Rendering Utility.
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*
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* PHP versions 4 and 5
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*
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* LICENSE: This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or (at your
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* option) any later version. This library is distributed in the hope that it
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
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* General Public License for more details. You should have received a copy of
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* the GNU Lesser General Public License along with this library; if not, write
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* to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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* 02111-1307 USA
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*
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* @category Images
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* @package Image_Graph
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* @subpackage Dataset
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* @author Jesper Veggerby <pear.nosey@veggerby.dk>
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* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version CVS: $Id: Trivial.php,v 1.10 2005/09/25 18:08:56 nosey Exp $
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* @link http://pear.php.net/package/Image_Graph
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*/
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/**
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* Include file Image/Graph/Dataset.php
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*/
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require_once 'Image/Graph/Dataset.php';
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/**
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* Trivial data set, simply add points (x, y) 1 by 1
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*
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* @category Images
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* @package Image_Graph
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* @subpackage Dataset
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* @author Jesper Veggerby <pear.nosey@veggerby.dk>
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* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version Release: @package_version@
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* @link http://pear.php.net/package/Image_Graph
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*/
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class Image_Graph_Dataset_Trivial extends Image_Graph_Dataset
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{
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/**
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* Data storage
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* @var array
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* @access private
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*/
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var $_data;
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/**
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* Image_Graph_Dataset_Trivial [Constructor]
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*
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* Pass an associated array ($data[$x] = $y) to the constructor for easy
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* data addition. Alternatively (if multiple entries with same x value is
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* required) pass an array with (x, y) values: $data[$id] = array('x' => $x,
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* 'y' => $y);
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*
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* NB! If passing the 1st type array at this point, the x-values will also
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* be used for ID tags, i.e. when using {@link Image_Graph_Fill_Array}. In
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* the 2nd type the key/index of the "outermost" array will be the id tag
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* (i.e. $id in the example)
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*
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* @param array $dataArray An associated array with values to the dataset
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*/
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function Image_Graph_Dataset_Trivial($dataArray = false)
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{
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parent::Image_Graph_Dataset();
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$this->_data = array ();
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if (is_array($dataArray)) {
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reset($dataArray);
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$keys = array_keys($dataArray);
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foreach ($keys as $x) {
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$y =& $dataArray[$x];
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if ((is_array($y)) && (isset($y['x'])) && (isset($y['y']))) {
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$this->addPoint($y['x'], $y['y'], (isset($y['id']) ? $y['id'] : $x));
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} else {
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$this->addPoint($x, $y, $x);
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}
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}
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}
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}
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/**
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* Add a point to the dataset
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*
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* $ID can contain either the ID of the point, i.e. 'DK', 123, 'George', etc. or it can contain
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* values used for creation of the HTML image map. This is achieved using is an an associated array
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* with the following values:
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*
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* 'url' The URL to create the link to
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*
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* 'alt' [optional] The alt text on the link
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*
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* 'target' [optional] The target of the link
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*
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* 'htmltags' [optional] An associated array with html tags (tag as key), fx. 'onMouseOver' => 'history.go(-1);', 'id' => 'thelink'
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*
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* @param int $x The X value to add
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* @param int $y The Y value to add, can be omited
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* @param var $ID The ID of the point
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*/
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function addPoint($x, $y = false, $ID = false)
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{
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parent::addPoint($x, $y, $ID);
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if (is_array($ID)) {
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$data = $ID;
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$ID = (isset($data['id']) ? $data['id'] : false);
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} else {
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$data = false;
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}
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$this->_data[] = array ('X' => $x, 'Y' => $y, 'ID' => $ID, 'data' => $data);
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if (!is_numeric($x)) {
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$this->_maximumX = count($this->_data);
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}
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}
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/**
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* The first point
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*
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* @return array The last point
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*/
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function first()
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{
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reset($this->_data);
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return current($this->_data);
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}
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/**
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* The last point
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*
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* @return array The first point
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*/
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function last()
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{
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return end($this->_data);
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}
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/**
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* Gets a X point from the dataset
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*
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* @param var $x The variable to return an X value from, fx in a
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* vector function data set
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* @return var The X value of the variable
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* @access private
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*/
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function _getPointX($x)
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{
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if (isset($this->_data[$x])) {
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return $this->_data[$x]['X'];
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} else {
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return false;
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}
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}
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/**
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* Gets a Y point from the dataset
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*
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* @param var $x The variable to return an Y value from, fx in a
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* vector function data set
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* @return var The Y value of the variable
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* @access private
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*/
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function _getPointY($x)
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{
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if (isset($this->_data[$x])) {
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return $this->_data[$x]['Y'];
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} else {
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return false;
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}
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}
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/**
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* Gets a ID from the dataset
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*
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* @param var $x The variable to return an Y value from, fx in a
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* vector function data set
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* @return var The ID value of the variable
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* @access private
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*/
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function _getPointID($x)
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{
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if (isset($this->_data[$x])) {
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return $this->_data[$x]['ID'];
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} else {
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return false;
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}
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}
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/**
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* Gets point data from the dataset
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*
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* @param var $x The variable to return an Y value from, fx in a vector
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* function data set
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* @return array The data for the point
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* @access private
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*/
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function _getPointData($x)
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{
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if (isset($this->_data[$x])) {
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return $this->_data[$x]['data'];
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} else {
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return false;
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}
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}
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/**
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* The number of values in the dataset
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*
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* @return int The number of values in the dataset
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*/
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function count()
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{
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return count($this->_data);
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}
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/**
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* Reset the intertal dataset pointer
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*
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* @return var The first X value
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* @access private
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*/
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function _reset()
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{
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$this->_posX = 0;
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return $this->_posX;
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}
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/**
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* Get the next point the internal pointer refers to and advance the pointer
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*
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* @return array The next point
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* @access private
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*/
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function _next()
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{
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if ($this->_posX >= $this->count()) {
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return false;
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}
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$x = $this->_getPointX($this->_posX);
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$y = $this->_getPointY($this->_posX);
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$ID = $this->_getPointID($this->_posX);
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$data = $this->_getPointData($this->_posX);
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$this->_posX += $this->_stepX();
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return array('X' => $x, 'Y' => $y, 'ID' => $ID, 'data' => $data);
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}
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}
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?>
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