diff options
Diffstat (limited to 'config/archive/dspam/pear/Image/Graph/Dataset/Function.php')
| -rw-r--r-- | config/archive/dspam/pear/Image/Graph/Dataset/Function.php | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/config/archive/dspam/pear/Image/Graph/Dataset/Function.php b/config/archive/dspam/pear/Image/Graph/Dataset/Function.php deleted file mode 100644 index 08174b1d..00000000 --- a/config/archive/dspam/pear/Image/Graph/Dataset/Function.php +++ /dev/null @@ -1,147 +0,0 @@ -<?php - -/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */ - -/** - * Image_Graph - PEAR PHP OO Graph Rendering Utility. - * - * PHP versions 4 and 5 - * - * LICENSE: This library is free software; you can redistribute it and/or modify - * it under the terms of the GNU Lesser General Public License as published by - * the Free Software Foundation; either version 2.1 of the License, or (at your - * option) any later version. This library 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 Lesser - * General Public License for more details. You should have received a copy of - * the GNU Lesser General Public License along with this library; if not, write - * to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - * 02111-1307 USA - * - * @category Images - * @package Image_Graph - * @subpackage Dataset - * @author Jesper Veggerby <pear.nosey@veggerby.dk> - * @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen - * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1 - * @version CVS: $Id$ - * @link http://pear.php.net/package/Image_Graph - */ - -/** - * Include file Image/Graph/Dataset.php - */ -require_once 'Image/Graph/Dataset.php'; - -/** - * Function data set, points are generated by calling an external function. - * - * The function must be a single variable function and return a the result, - * builtin functions that are fx sin() or cos(). User defined function can be - * used if they are such, i.e: function myFunction($variable) - * - * @category Images - * @package Image_Graph - * @subpackage Dataset - * @author Jesper Veggerby <pear.nosey@veggerby.dk> - * @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen - * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1 - * @version Release: @package_version@ - * @link http://pear.php.net/package/Image_Graph - */ -class Image_Graph_Dataset_Function extends Image_Graph_Dataset -{ - - /** - * The name of the function - * @var string - * @access private - */ - var $_dataFunction; - - /** - * Image_Graph_FunctionDataset [Constructor] - * - * @param double $minimumX The minimum X value - * @param double $maximumX The maximum X value - * @param string $function The name of the function, if must be a single - * parameter function like fx sin(x) or cos(x) - * @param int $points The number of points to create - */ - function Image_Graph_Dataset_Function($minimumX, $maximumX, $function, $points) - { - parent::Image_Graph_Dataset(); - $this->_minimumX = $minimumX; - $this->_maximumX = $maximumX; - $this->_dataFunction = $function; - $this->_count = $points; - $this->_calculateMaxima(); - } - - /** - * Add a point to the dataset. - * - * You can't add points to a function dataset - * - * @param int $x The X value to add - * @param int $y The Y value to add, can be omited - * @param var $ID The ID of the point - */ - function addPoint($x, $y = false, $ID = false) - { - } - - /** - * Gets a Y point from the dataset - * - * @param var $x The variable to apply the function to - * @return var The function applied to the X value - * @access private - */ - function _getPointY($x) - { - $function = $this->_dataFunction; - return $function ($x); - } - - /** - * The number of values in the dataset - * - * @return int The number of values in the dataset - * @access private - */ - function _count() - { - return $this->_count; - } - - /** - * The interval between 2 adjacent Y values - * - * @return var The interval - * @access private - */ - function _stepX() - { - return ($this->_maximumX - $this->_minimumX) / $this->_count(); - } - - /** - * Calculates the Y extrema of the function - * - * @access private - */ - function _calculateMaxima() - { - $x = $this->_minimumX; - while ($x <= $this->_maximumX) { - $y = $this->_getPointY($x); - $this->_minimumY = min($y, $this->_minimumY); - $this->_maximumY = max($y, $this->_maximumY); - $x += $this->_stepX(); - } - } - -} - -?>
\ No newline at end of file |