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+<?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 Plot
+ * @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
+ * @since File available since Release 0.3.0dev2
+ */
+
+/**
+ * Include file Image/Graph/Plot.php
+ */
+require_once 'Image/Graph/Plot.php';
+
+/**
+ * Box & Whisker chart.
+ *
+ * @category Images
+ * @package Image_Graph
+ * @subpackage Plot
+ * @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
+ * @since Class available since Release 0.3.0dev2
+ */
+class Image_Graph_Plot_BoxWhisker extends Image_Graph_Plot
+{
+ /**
+ * Whisker circle size
+ * @var int
+ * @access private
+ */
+ var $_whiskerSize = false;
+
+ /**
+ * Draws a box & whisker
+ *
+ * @param int $x The x position
+ * @param int $w The width of the box
+ * @param int $r The radius of the circle markers
+ * @param int $y_min The Y position of the minimum value
+ * @param int $y_q1 The Y position of the median of the first quartile
+ * @param int $y_med The Y position of the median
+ * @param int $y_q3 The Y position of the median of the third quartile
+ * @param int $y_max The Y position of the maximum value
+ * @param int $key The ID tag
+ * @access private
+ */
+ function _drawBoxWhiskerV($x, $w, $r, $y_min, $y_q1, $y_med, $y_q3, $y_max, $key = false)
+ {
+ // draw circles
+ $this->_getLineStyle();
+ $this->_getFillStyle('min');
+ $this->_canvas->ellipse(array('x' => $x, 'y' => $y_min, 'rx' => $r, 'ry' => $r));
+
+ $this->_getLineStyle();
+ $this->_getFillStyle('quartile1');
+ $this->_canvas->ellipse(array('x' => $x, 'y' => $y_q1, 'rx' => $r, 'ry' => $r));
+
+ $this->_getLineStyle();
+ $this->_getFillStyle('median');
+ $this->_canvas->ellipse(array('x' => $x, 'y' => $y_med, 'rx' => $r, 'ry' => $r));
+
+ $this->_getLineStyle();
+ $this->_getFillStyle('quartile3');
+ $this->_canvas->ellipse(array('x' => $x, 'y' => $y_q3, $r, 'rx' => $r, 'ry' => $r));
+
+ $this->_getLineStyle();
+ $this->_getFillStyle('max');
+ $this->_canvas->ellipse(array('x' => $x, 'y' => $y_max, $r, 'rx' => $r, 'ry' => $r));
+
+ // draw box and lines
+
+ $this->_getLineStyle();
+ $this->_canvas->line(array('x0' => $x, 'y0' => $y_min, 'x1' => $x, 'y1' => $y_q1));
+ $this->_getLineStyle();
+ $this->_canvas->line(array('x0' => $x, 'y0' => $y_q3, 'x1' => $x, 'y1' => $y_max));
+
+ $this->_getLineStyle();
+ $this->_getFillStyle('box');
+ $this->_canvas->rectangle(array('x0' => $x - $w, 'y0' => $y_q1, 'x1' => $x + $w, 'y1' => $y_q3));
+
+ $this->_getLineStyle();
+ $this->_canvas->line(array('x0' => $x - $w, 'y0' => $y_med, 'x1' => $x + $w, 'y1' => $y_med));
+ }
+
+ /**
+ * Draws a box & whisker
+ *
+ * @param int $y The x position
+ * @param int $h The width of the box
+ * @param int $r The radius of the circle markers
+ * @param int $x_min The Y position of the minimum value
+ * @param int $x_q1 The Y position of the median of the first quartile
+ * @param int $x_med The Y position of the median
+ * @param int $x_q3 The Y position of the median of the third quartile
+ * @param int $x_max The Y position of the maximum value
+ * @param int $key The ID tag
+ * @access private
+ */
+ function _drawBoxWhiskerH($y, $h, $r, $x_min, $x_q1, $x_med, $x_q3, $x_max, $key = false)
+ {
+ // draw circles
+ $this->_getLineStyle();
+ $this->_getFillStyle('min');
+ $this->_canvas->ellipse(array('x' => $x_min, 'y' => $y, 'rx' => $r, 'ry' => $r));
+
+ $this->_getLineStyle();
+ $this->_getFillStyle('quartile1');
+ $this->_canvas->ellipse(array('x' => $x_q1, 'y' => $y, 'rx' => $r, 'ry' => $r));
+
+ $this->_getLineStyle();
+ $this->_getFillStyle('median');
+ $this->_canvas->ellipse(array('x' => $x_med, 'y' => $y, 'rx' => $r, 'ry' => $r));
+
+ $this->_getLineStyle();
+ $this->_getFillStyle('quartile3');
+ $this->_canvas->ellipse(array('x' => $x_q3, 'y' => $y, $r, 'rx' => $r, 'ry' => $r));
+
+ $this->_getLineStyle();
+ $this->_getFillStyle('max');
+ $this->_canvas->ellipse(array('x' => $x_max, 'y' => $y, $r, 'rx' => $r, 'ry' => $r));
+
+ // draw box and lines
+
+ $this->_getLineStyle();
+ $this->_canvas->line(array('x0' => $x_min, 'y0' => $y, 'x1' => $x_q1, 'y1' => $y));
+ $this->_getLineStyle();
+ $this->_canvas->line(array('x0' => $x_q3, 'y0' => $y, 'x1' => $x_max, 'y1' => $y));
+
+ $this->_getLineStyle();
+ $this->_getFillStyle('box');
+ $this->_canvas->rectangle(array('x0' => $x_q1, 'y0' => $y - $h, 'x1' => $x_q3, 'y1' => $y + $h));
+
+ $this->_getLineStyle();
+ $this->_canvas->line(array('x0' => $x_med, 'y0' => $y - $h, 'x1' => $x_med, 'y1' => $y + $h));
+ }
+
+ /**
+ * Perform the actual drawing on the legend.
+ *
+ * @param int $x0 The top-left x-coordinate
+ * @param int $y0 The top-left y-coordinate
+ * @param int $x1 The bottom-right x-coordinate
+ * @param int $y1 The bottom-right y-coordinate
+ * @access private
+ */
+ function _drawLegendSample($x0, $y0, $x1, $y1)
+ {
+ $x = round(($x0 + $x1) / 2);
+ $h = abs($y1 - $y0) / 9;
+ $w = round(abs($x1 - $x0) / 5);
+ $r = 2;//round(abs($x1 - $x0) / 13);
+ $this->_drawBoxWhiskerV($x, $w, $r, $y1, $y1 - 2 * $h, $y1 - 4 * $h, $y0 + 3 * $h, $y0);
+ }
+
+ /**
+ * Sets the whisker circle size
+ *
+ * @param int $size Size (radius) of the whisker circle/dot
+ */
+ function setWhiskerSize($size = false)
+ {
+ $this->_whiskerSize = $size;
+ }
+
+ /**
+ * Output the plot
+ *
+ * @return bool Was the output 'good' (true) or 'bad' (false).
+ * @access private
+ */
+ function _done()
+ {
+ if (parent::_done() === false) {
+ return false;
+ }
+
+ if (!is_array($this->_dataset)) {
+ return false;
+ }
+
+ $this->_canvas->startGroup(get_class($this) . '_' . $this->_title);
+
+ $this->_clip(true);
+
+ if ($this->_multiType == 'stacked100pct') {
+ $total = $this->_getTotals();
+ }
+ $current = array();
+ $number = 0;
+ $width = floor(0.5 * $this->_parent->_labelDistance(IMAGE_GRAPH_AXIS_X) / 2);
+
+ if ($this->_whiskerSize !== false) {
+ $r = $this->_whiskerSize;
+ } else {
+ $r = min(5, $width / 10);
+ }
+
+ $keys = array_keys($this->_dataset);
+ foreach ($keys as $key) {
+ $dataset =& $this->_dataset[$key];
+ $dataset->_reset();
+ while ($data = $dataset->_next()) {
+ if ($this->_parent->_horizontal) {
+ $point['X'] = $data['X'];
+ $y = $data['Y'];
+
+ $min = min($y);
+ $max = max($y);
+ $q1 = $dataset->_median($y, 'first');
+ $med = $dataset->_median($y, 'second');
+ $q3 = $dataset->_median($y, 'third');
+
+ $point['Y'] = $min;
+ $y = $this->_pointY($point);
+ $x_min = $this->_pointX($point);
+
+ $point['Y'] = $max;
+ $x_max = $this->_pointX($point);
+
+ $point['Y'] = $q1;
+ $x_q1 = $this->_pointX($point);
+
+ $point['Y'] = $med;
+ $x_med = $this->_pointX($point);
+
+ $point['Y'] = $q3;
+ $x_q3 = $this->_pointX($point);
+
+ $this->_drawBoxWhiskerH($y, $width, $r, $x_min, $x_q1, $x_med, $x_q3, $x_max, $key);
+ }
+ else {
+ $point['X'] = $data['X'];
+ $y = $data['Y'];
+
+ $min = min($y);
+ $max = max($y);
+ $q1 = $dataset->_median($y, 'first');
+ $med = $dataset->_median($y, 'second');
+ $q3 = $dataset->_median($y, 'third');
+
+ $point['Y'] = $min;
+ $x = $this->_pointX($point);
+ $y_min = $this->_pointY($point);
+
+ $point['Y'] = $max;
+ $y_max = $this->_pointY($point);
+
+ $point['Y'] = $q1;
+ $y_q1 = $this->_pointY($point);
+
+ $point['Y'] = $med;
+ $y_med = $this->_pointY($point);
+
+ $point['Y'] = $q3;
+ $y_q3 = $this->_pointY($point);
+
+ $this->_drawBoxWhiskerV($x, $width, $r, $y_min, $y_q1, $y_med, $y_q3, $y_max, $key);
+ }
+ }
+ }
+ unset($keys);
+ $this->_drawMarker();
+
+ $this->_clip(false);
+
+ $this->_canvas->endGroup();
+ return true;
+ }
+
+}
+
+?> \ No newline at end of file
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