Annotation of /contrib/plugins/grade/report/visual/visualizations/visual_grade_distribution.php

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Revision 1.3 - (view) (download)

1 :	dservos	1.1	<?php
2 :	dservos	1.3	///////////////////////////////////////////////////////////////////////////
3 :			// //
4 :			// NOTICE OF COPYRIGHT //
5 :			// //
6 :			// Moodle - Modular Object-Oriented Dynamic Learning Environment //
7 :			// http://moodle.org //
8 :			// //
9 :			// Copyright (C) 1999 onwards Martin Dougiamas http://moodle.com //
10 :			// //
11 :			// This program is free software; you can redistribute it and/or modify //
12 :			// it under the terms of the GNU General Public License as published by //
13 :			// the Free Software Foundation; either version 2 of the License, or //
14 :			// (at your option) any later version. //
15 :			// //
16 :			// This program is distributed in the hope that it will be useful, //
17 :			// but WITHOUT ANY WARRANTY; without even the implied warranty of //
18 :			// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
19 :			// GNU General Public License for more details: //
20 :			// //
21 :			// http://www.gnu.org/copyleft/gpl.html //
22 :			// //
23 :			///////////////////////////////////////////////////////////////////////////
24 :
25 :	dservos	1.1	require_once $CFG->dirroot . '/grade/report/visual/visualizations/visualization.php';
26 :
27 :			class grade_distribution extends visualization {
28 :			const RANGE = 10;
29 :
30 :	dservos	1.2	public $percent = true;
31 :
32 :	dservos	1.1	public $colorencodernode;
33 :
34 :			public $colorencoderedge;
35 :
36 :			public $shapeencodernode;
37 :
38 :			public $shapeencoderedge;
39 :
40 :			public $grouplegend;
41 :
42 :			public $itemlegend;
43 :
44 :			public function __construct() {
45 :			parent::__construct(get_string('gradedistribution', 'gradereport_visual'));
46 :
47 :			$this->layout = visualization::LAYOUT_AXIS;
48 :			$this->layoutsettings = null;//array('false', 'true');
49 :			//$this->nodeshape = visualization::SHAPE_VERTICAL_BAR;
50 :			//$this->edgeshape = visualization::SHAPE_BEZIER;
51 :
52 :	dservos	1.3	$this->edges = array(new edge('grade', array('group', 'item')));
53 :	dservos	1.1
54 :			$this->xaxis = 'grade';
55 :			$this->yaxis = 'students';
56 :			$this->xaxislabelformat = '0\\%';
57 :	dservos	1.2
58 :			if($this->percent) {
59 :			$this->yaxislabelformat = '0\\%';
60 :			$this->yaxislabel = get_string('percentstudents', 'gradereport_visual');
61 :			} else {
62 :			$this->yaxislabel = get_string('numberstudents', 'gradereport_visual');
63 :			}
64 :
65 :	dservos	1.1	//$this->xaxismax = 100 + grade_distribution::RANGE;
66 :			//$this->xaxismin = grade_distribution::RANGE;
67 :			$this->xaxisxoffset = -27;
68 :
69 :			$this->xaxislabel = get_string('grade', 'gradereport_visual');
70 :			$this->title = get_string('gradedistribution:title', 'gradereport_visual');
71 :
72 :	dservos	1.3	$this->capability = 'gradereport/visual:vis:grade_distribution';
73 :	dservos	1.1
74 :			$this->colorencoderedge = new encoder(encoder::ENCODER_COLOR, 'item', array(2));
75 :			$this->colorencodernode = new encoder(encoder::ENCODER_COLOR, 'item', array(1));
76 :			//$this->shapeencoderedge = new encoder(encoder::ENCODER_SHAPE, 'group', array(2));
77 :			$this->shapeencodernode = new encoder(encoder::ENCODER_SHAPE, 'group', array(1));
78 :			$this->encoders = array($this->colorencodernode, $this->colorencoderedge, $this->shapeencodernode);
79 :
80 :	dservos	1.2	$this->grouplegend = new legend($this->shapeencodernode, array(get_string('allgroups', 'gradereport_visual')));
81 :			$this->itemlegend = new legend($this->colorencodernode, array(get_string('coursetotal', 'grades')));
82 :	dservos	1.1	$this->legends = array($this->itemlegend, $this->grouplegend);
83 :			}
84 :
85 :			public function report_data($visualreport) {
86 :			$data = array();
87 :			$data['header'] = array();
88 :			$data['header']['students'] = 'students';
89 :			// $data['header']['gradelevel'] = 'gradelevel';
90 :			$data['header']['grade'] = 'grade';
91 :			$data['header']['item'] = 'item';
92 :			$data['header']['group'] = 'group';
93 :			//$data['header']['range'] = 'range';
94 :
95 :			$rawdata = array();
96 :			$counters = array();
97 :			$rangesize = round(100 / grade_distribution::RANGE);
98 :
99 :			foreach($visualreport->grades as $itemkey=>$itemgrades) {
100 :			foreach($itemgrades as $studentkey=>$studentdata) {
101 :			if($studentdata != null && $studentdata->finalgrade != null) {
102 :			foreach(groups_get_user_groups($visualreport->courseid, $studentkey) as $grouping) {
103 :			$gradelevel = floor(round($studentdata->standardise_score($studentdata->finalgrade, $visualreport->gtree->items[$itemkey]->grademin, $visualreport->gtree->items[$itemkey]->grademax, 0, 100)) / grade_distribution::RANGE);
104 :	dservos	1.2	//if($gradelevel == $rangesize) {
105 :			// $gradelevel = $rangesize - 1;
106 :			//}
107 :	dservos	1.1
108 :			if(count($grouping) > 0) {
109 :			foreach($grouping as $group) {
110 :			if(isset($rawdata[$gradelevel][$itemkey][$group])) {
111 :			$rawdata[$gradelevel][$itemkey][$group] += 1;
112 :			} else {
113 :			$rawdata[$gradelevel][$itemkey][$group] = 1;
114 :			}
115 :
116 :			if(isset($counters[$itemkey][$group])) {
117 :			$counters[$itemkey][$group] += 1;
118 :			} else {
119 :			$counters[$itemkey][$group] = 1;
120 :			}
121 :			}
122 :			} else {
123 :			if(isset($rawdata[$gradelevel][$itemkey]['ng'])) {
124 :			$rawdata[$gradelevel][$itemkey]['ng'] += 1;
125 :			} else {
126 :			$rawdata[$gradelevel][$itemkey]['ng'] = 1;
127 :			}
128 :
129 :			if(isset($counters[$itemkey]['ng'])) {
130 :			$counters[$itemkey]['ng'] += 1;
131 :			} else {
132 :			$counters[$itemkey]['ng'] = 1;
133 :			}
134 :			}
135 :
136 :			if(isset($rawdata[$gradelevel][$itemkey]['ag'])) {
137 :			$rawdata[$gradelevel][$itemkey]['ag'] += 1;
138 :			} else {
139 :			$rawdata[$gradelevel][$itemkey]['ag'] = 1;
140 :			}
141 :
142 :			if(isset($counters[$itemkey]['ag'])) {
143 :			$counters[$itemkey]['ag'] += 1;
144 :			} else {
145 :			$counters[$itemkey]['ag'] = 1;
146 :			}
147 :			}
148 :			}
149 :			}
150 :
151 :	dservos	1.2	for($i = 0; $i <= $rangesize; $i++) {
152 :	dservos	1.1	foreach(groups_get_all_groups($visualreport->courseid) as $group) {
153 :			if(!isset($rawdata[$i][$itemkey][$group->id])) {
154 :			$rawdata[$i][$itemkey][$group->id] = 0;
155 :			}
156 :			}
157 :
158 :			if(!isset($rawdata[$i][$itemkey]['ng'])) {
159 :			$rawdata[$i][$itemkey]['ng'] = 0;
160 :			}
161 :
162 :			if(!isset($rawdata[$i][$itemkey]['ag'])) {
163 :			$rawdata[$i][$itemkey]['ag'] = 0;
164 :			}
165 :			}
166 :			}
167 :
168 :
169 :			$i = 0;
170 :
171 :			foreach($rawdata as $gradelevel=>$items) {
172 :			foreach($items as $itemkey=>$groups) {
173 :			foreach($groups as $groupkey=>$students) {
174 :			$index = $gradelevel * 10000 + $i;
175 :	dservos	1.2
176 :	dservos	1.1	//$data[$index]['gradelevel'] = $gradelevel;
177 :	dservos	1.2
178 :			if($this->percent) {
179 :			$data[$index]['students'] = ($students / $counters[$itemkey][$groupkey]) * 100;
180 :			} else {
181 :			$data[$index]['students'] = $students;
182 :			}
183 :
184 :	dservos	1.1	$data[$index]['grade'] = $gradelevel * grade_distribution::RANGE; //($gradelevel * grade_distribution::RANGE) . '% - ' . (($gradelevel + 1) * grade_distribution::RANGE - 1) . '%';
185 :	dservos	1.2
186 :	dservos	1.1	$data[$index]['item'] = $visualreport->gtree->items[$itemkey]->get_name();
187 :			if($groupkey == 'ng') {
188 :			$data[$index]['group'] = get_string('nogroup', 'gradereport_visual');
189 :			} else if($groupkey == 'ag'){
190 :			$data[$index]['group'] = get_string('allgroups', 'gradereport_visual');
191 :			} else {
192 :			$data[$index]['group'] = groups_get_group_name($groupkey);
193 :			}
194 :			//$data[$index]['range'] = grade_distribution::RANGE;
195 :
196 :			$i++;
197 :			}
198 :			}
199 :			}
200 :
201 :			// ksort($data);
202 :
203 :			return $data;
204 :			}
205 :			}
206 :			?>

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