[Sommaire] [Imprimer]

   1  <?php
   2  
   3  /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
   4  
   5  /**
   6   * Image_Graph - PEAR PHP OO Graph Rendering Utility.
   7   *
   8   * PHP versions 4 and 5
   9   *
  10   * LICENSE: This library is free software; you can redistribute it and/or modify
  11   * it under the terms of the GNU Lesser General Public License as published by
  12   * the Free Software Foundation; either version 2.1 of the License, or (at your
  13   * option) any later version. This library is distributed in the hope that it
  14   * will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  15   * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
  16   * General Public License for more details. You should have received a copy of
  17   * the GNU Lesser General Public License along with this library; if not, write
  18   * to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19   * 02111-1307 USA
  20   *
  21   * @category   Images
  22   * @package    Image_Graph
  23   * @subpackage Dataset
  24   * @author     Jesper Veggerby <pear.nosey@veggerby.dk>
  25   * @copyright  Copyright (C) 2003, 2004 Jesper Veggerby Hansen
  26   * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1
  27   * @version    CVS: $Id: Sequential.php,v 1.7 2005/08/24 20:35:58 nosey Exp $
  28   * @link       http://pear.php.net/package/Image_Graph
  29   */
  30  
  31  /**
  32   * Include file Image/Graph/Dataset/Trivial.php
  33   */
  34  require_once  'Image/Graph/Dataset/Trivial.php';
  35  
  36  /**
  37   * Sequential data set, simply add points (y) 1 by 1.
  38   *
  39   * This is a single point (1D) dataset, all points are of the type (0, y1), (1,
  40   * y2), (2,  y3)... Where the X-value is implicitly incremented. This is useful
  41   * for example for barcharts, where you could fx. use an {@link
  42   * Image_Graph_Dataset_Array} datapreprocessor to make sence of the x-values.
  43   *
  44   * @category   Images
  45   * @package    Image_Graph
  46   * @subpackage Dataset
  47   * @author     Jesper Veggerby <pear.nosey@veggerby.dk>
  48   * @copyright  Copyright (C) 2003, 2004 Jesper Veggerby Hansen
  49   * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1
  50   * @version    Release: 0.7.2
  51   * @link       http://pear.php.net/package/Image_Graph
  52   */
  53  class Image_Graph_Dataset_Sequential extends Image_Graph_Dataset_Trivial
  54  {
  55  
  56      /**
  57       * Image_Graph_SequentialDataset [Constructor]
  58       */
  59      function Image_Graph_Dataset_Sequential($dataArray = false)
  60      {
  61          parent::Image_Graph_Dataset_Trivial();
  62          if (is_array($dataArray)) {
  63              reset($dataArray);
  64              foreach ($dataArray as $value) {
  65                  $this->addPoint($value);
  66              }
  67          }
  68      }
  69  
  70      /**
  71       * Add a point to the dataset
  72       *
  73       * @param int $y The Y value to add, can be omited
  74       * @param var $ID The ID of the point
  75       */
  76      function addPoint($y, $ID = false)
  77      {
  78          parent::addPoint($this->count(), $y);
  79      }
  80  
  81      /**
  82       * Gets a X point from the dataset
  83       *
  84       * @param var $x The variable to return an X value from, fx in a
  85       *   vector function data set
  86       * @return var The X value of the variable
  87       * @access private
  88       */
  89      function _getPointX($x)
  90      {
  91          return ((int) $x);
  92      }
  93  
  94      /**
  95       * The minimum X value
  96       * @return var The minimum X value
  97       */
  98      function minimumX()
  99      {
 100          return 0;
 101      }
 102  
 103      /**
 104       * The maximum X value
 105       * @return var The maximum X value
 106       */
 107      function maximumX()
 108      {
 109          return $this->count();
 110      }
 111  
 112  }
 113  
 114  ?>