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

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Revision 1.1 - (view) (download)

1 :	dservos	1.1	<?php
2 :			require_once $CFG->dirroot . '/grade/report/visual/visualizations/visualization.php';
3 :
4 :			class grade_distribution extends visualization {
5 :			const RANGE = 10;
6 :
7 :			public $colorencodernode;
8 :
9 :			public $colorencoderedge;
10 :
11 :			public $shapeencodernode;
12 :
13 :			public $shapeencoderedge;
14 :
15 :			public $grouplegend;
16 :
17 :			public $itemlegend;
18 :
19 :			public function __construct() {
20 :			parent::__construct(get_string('gradedistribution', 'gradereport_visual'));
21 :
22 :			$this->layout = visualization::LAYOUT_AXIS;
23 :			$this->layoutsettings = null;//array('false', 'true');
24 :			//$this->nodeshape = visualization::SHAPE_VERTICAL_BAR;
25 :			//$this->edgeshape = visualization::SHAPE_BEZIER;
26 :
27 :			$this->edges = array(new edge('grade', array('item', 'group')));
28 :
29 :			$this->xaxis = 'grade';
30 :			$this->yaxis = 'students';
31 :			$this->xaxislabelformat = '0\\%';
32 :			//$this->xaxismax = 100 + grade_distribution::RANGE;
33 :			//$this->xaxismin = grade_distribution::RANGE;
34 :			$this->xaxisxoffset = -27;
35 :
36 :			$this->xaxislabel = get_string('grade', 'gradereport_visual');
37 :			$this->yaxislabel = get_string('numberstudents', 'gradereport_visual');
38 :			$this->title = get_string('gradedistribution:title', 'gradereport_visual');
39 :
40 :			$this->capabilities = null;
41 :
42 :			$this->colorencoderedge = new encoder(encoder::ENCODER_COLOR, 'item', array(2));
43 :			$this->colorencodernode = new encoder(encoder::ENCODER_COLOR, 'item', array(1));
44 :			//$this->shapeencoderedge = new encoder(encoder::ENCODER_SHAPE, 'group', array(2));
45 :			$this->shapeencodernode = new encoder(encoder::ENCODER_SHAPE, 'group', array(1));
46 :			$this->encoders = array($this->colorencodernode, $this->colorencoderedge, $this->shapeencodernode);
47 :
48 :			$this->grouplegend = new legend($this->shapeencodernode);
49 :			$this->itemlegend = new legend($this->colorencodernode);
50 :			$this->legends = array($this->itemlegend, $this->grouplegend);
51 :			}
52 :
53 :			public function report_data($visualreport) {
54 :			$data = array();
55 :			$data['header'] = array();
56 :			$data['header']['students'] = 'students';
57 :			// $data['header']['gradelevel'] = 'gradelevel';
58 :			$data['header']['grade'] = 'grade';
59 :			$data['header']['item'] = 'item';
60 :			$data['header']['group'] = 'group';
61 :			//$data['header']['range'] = 'range';
62 :
63 :			$rawdata = array();
64 :			$counters = array();
65 :			$rangesize = round(100 / grade_distribution::RANGE);
66 :
67 :			foreach($visualreport->grades as $itemkey=>$itemgrades) {
68 :			foreach($itemgrades as $studentkey=>$studentdata) {
69 :			if($studentdata != null && $studentdata->finalgrade != null) {
70 :			foreach(groups_get_user_groups($visualreport->courseid, $studentkey) as $grouping) {
71 :			$gradelevel = floor(round($studentdata->standardise_score($studentdata->finalgrade, $visualreport->gtree->items[$itemkey]->grademin, $visualreport->gtree->items[$itemkey]->grademax, 0, 100)) / grade_distribution::RANGE);
72 :			if($gradelevel == $rangesize) {
73 :			$gradelevel = $rangesize - 1;
74 :			}
75 :
76 :			if(count($grouping) > 0) {
77 :			foreach($grouping as $group) {
78 :			if(isset($rawdata[$gradelevel][$itemkey][$group])) {
79 :			$rawdata[$gradelevel][$itemkey][$group] += 1;
80 :			} else {
81 :			$rawdata[$gradelevel][$itemkey][$group] = 1;
82 :			}
83 :
84 :			if(isset($counters[$itemkey][$group])) {
85 :			$counters[$itemkey][$group] += 1;
86 :			} else {
87 :			$counters[$itemkey][$group] = 1;
88 :			}
89 :			}
90 :			} else {
91 :			if(isset($rawdata[$gradelevel][$itemkey]['ng'])) {
92 :			$rawdata[$gradelevel][$itemkey]['ng'] += 1;
93 :			} else {
94 :			$rawdata[$gradelevel][$itemkey]['ng'] = 1;
95 :			}
96 :
97 :			if(isset($counters[$itemkey]['ng'])) {
98 :			$counters[$itemkey]['ng'] += 1;
99 :			} else {
100 :			$counters[$itemkey]['ng'] = 1;
101 :			}
102 :			}
103 :
104 :			if(isset($rawdata[$gradelevel][$itemkey]['ag'])) {
105 :			$rawdata[$gradelevel][$itemkey]['ag'] += 1;
106 :			} else {
107 :			$rawdata[$gradelevel][$itemkey]['ag'] = 1;
108 :			}
109 :
110 :			if(isset($counters[$itemkey]['ag'])) {
111 :			$counters[$itemkey]['ag'] += 1;
112 :			} else {
113 :			$counters[$itemkey]['ag'] = 1;
114 :			}
115 :			}
116 :			}
117 :			}
118 :
119 :			for($i = 0; $i < $rangesize; $i++) {
120 :			foreach(groups_get_all_groups($visualreport->courseid) as $group) {
121 :			if(!isset($rawdata[$i][$itemkey][$group->id])) {
122 :			$rawdata[$i][$itemkey][$group->id] = 0;
123 :			}
124 :			}
125 :
126 :			if(!isset($rawdata[$i][$itemkey]['ng'])) {
127 :			$rawdata[$i][$itemkey]['ng'] = 0;
128 :			}
129 :
130 :			if(!isset($rawdata[$i][$itemkey]['ag'])) {
131 :			$rawdata[$i][$itemkey]['ag'] = 0;
132 :			}
133 :			}
134 :			}
135 :
136 :
137 :			$i = 0;
138 :
139 :			foreach($rawdata as $gradelevel=>$items) {
140 :			foreach($items as $itemkey=>$groups) {
141 :			foreach($groups as $groupkey=>$students) {
142 :			$index = $gradelevel * 10000 + $i;
143 :			$data[$index]['students'] = $students;
144 :			//$data[$index]['gradelevel'] = $gradelevel;
145 :			$data[$index]['grade'] = $gradelevel * grade_distribution::RANGE; //($gradelevel * grade_distribution::RANGE) . '% - ' . (($gradelevel + 1) * grade_distribution::RANGE - 1) . '%';
146 :			$data[$index]['item'] = $visualreport->gtree->items[$itemkey]->get_name();
147 :			if($groupkey == 'ng') {
148 :			$data[$index]['group'] = get_string('nogroup', 'gradereport_visual');
149 :			} else if($groupkey == 'ag'){
150 :			$data[$index]['group'] = get_string('allgroups', 'gradereport_visual');
151 :			} else {
152 :			$data[$index]['group'] = groups_get_group_name($groupkey);
153 :			}
154 :			//$data[$index]['range'] = grade_distribution::RANGE;
155 :
156 :			$i++;
157 :			}
158 :			}
159 :			}
160 :
161 :			// ksort($data);
162 :
163 :			return $data;
164 :			}
165 :			}
166 :			?>

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