mirror of
https://github.com/moodle/moodle.git
synced 2025-03-09 02:10:00 +01:00
1065 lines
47 KiB
PHP
1065 lines
47 KiB
PHP
<?php // $Id$
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require_once($CFG->libdir.'/tablelib.php');
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/// Item analysis displays a table of quiz questions and their performance
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class quiz_analysis_report extends quiz_default_report {
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function display($quiz, $cm, $course) { /// This function just displays the report
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global $CFG, $SESSION, $QTYPES, $DB;
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$strnoattempts = get_string('noattempts','quiz');
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/// Only print headers if not asked to download data
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$download = optional_param('download', NULL);
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if (!$download) {
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$this->print_header_and_tabs($cm, $course, $quiz, $reportmode="analysis");
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}
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/// Construct the table for this particular report
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// echo "course <pre>";print_r($course);echo "</pre>";
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// echo "course <pre>";print_r($CFG);echo "</pre>";
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if (!$quiz->questions) {
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print_heading($strnoattempts);
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return true;
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}
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/// Check to see if groups are being used in this quiz
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$currentgroup = groups_get_activity_group($cm, true);
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if ($groupmode = groups_get_activity_groupmode($cm)) { // Groups are being used
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if (!$download) {
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groups_print_activity_menu($cm, "report.php?id=$cm->id&mode=analysis");
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}
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}
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// set Table and Analysis stats options
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if(!isset($SESSION->quiz_analysis_table)) {
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$SESSION->quiz_analysis_table = array('attemptselection' => 0, 'lowmarklimit' => 0, 'pagesize' => QUIZ_REPORT_DEFAULT_PAGE_SIZE);
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}
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foreach($SESSION->quiz_analysis_table as $option => $value) {
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$urlparam = optional_param($option, NULL, PARAM_INT);
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if($urlparam === NULL) {
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$$option = $value;
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} else {
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$$option = $SESSION->quiz_analysis_table[$option] = $urlparam;
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}
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}
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if (!isset($pagesize) || ((int)$pagesize < 1) ){
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$pagesize = QUIZ_REPORT_DEFAULT_PAGE_SIZE;
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}
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$scorelimit = $quiz->sumgrades * $lowmarklimit/ 100;
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// ULPGC ecastro DEBUG this is here to allow for different SQL to select attempts
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switch ($attemptselection) {
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case QUIZ_ALLATTEMPTS :
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$limit = '';
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$group = '';
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break;
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case QUIZ_HIGHESTATTEMPT :
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$limit = ', max(qa.sumgrades) ';
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$group = ' GROUP BY qa.userid ';
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break;
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case QUIZ_FIRSTATTEMPT :
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$limit = ', min(qa.timemodified) ';
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$group = ' GROUP BY qa.userid ';
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break;
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case QUIZ_LASTATTEMPT :
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$limit = ', max(qa.timemodified) ';
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$group = ' GROUP BY qa.userid ';
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break;
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}
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if ($attemptselection != QUIZ_ALLATTEMPTS) {
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$sql = 'SELECT qa.userid '.$limit.
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'FROM {user} u LEFT JOIN {quiz_attempts} qa ON u.id = qa.userid '.
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'WHERE qa.quiz = ? AND qa.preview = 0 '.
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$group;
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$usermax = $DB->get_records_sql_menu($sql, array($quiz->id));
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}else {
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$usermax = '';
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}
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$groupmembers = '';
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$groupwhere = '';
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//Add this to the SQL to show only group users
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$params = array($quiz->id, $scorelimit);
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if ($currentgroup) {
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$groupmembers = ", {groups_members} gm ";
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$groupwhere = "AND gm.groupid = ? AND u.id = gm.userid";
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$params[] = $currentgroup;
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}
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$sql = 'SELECT qa.* FROM {quiz_attempts} qa, {user} u '.$groupmembers.
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'WHERE u.id = qa.userid AND qa.quiz = ? AND qa.preview = 0 AND ( qa.sumgrades >= ? ) '.$groupwhere;
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// ^^^^^^ es posible seleccionar aqu TODOS los quizzes, como quiere Jussi,
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// pero habra que llevar la cuenta ed cada quiz para restaura las preguntas (quizquestions, states)
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/// Fetch the attempts
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$attempts = $DB->get_records_sql($sql, $params);
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if(empty($attempts)) {
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print_heading(get_string('nothingtodisplay'));
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$this->print_options_form($quiz, $cm, $attemptselection, $lowmarklimit, $pagesize);
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return true;
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}
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$questions = array();
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$getquestiondata = true ;
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$this->get_questions_atttempts_data ($quiz,$questions,$attempts,$attemptselection,$usermax);
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/* This is the code before creating the get_questions_atttempts_data function
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/// will remove these lines when the new function gets approval
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/// Here we rewiew all attempts and record data to construct the table
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$questions = array();
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$statstable = array();
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$questionarray = array();
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foreach ($attempts as $attempt) {
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$questionarray[] = quiz_questions_in_quiz($attempt->layout);
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}
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$questionlist = quiz_questions_in_quiz(implode(",", $questionarray));
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$questionarray = array_unique(explode(",",$questionlist));
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$questionlist = implode(",", $questionarray);
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unset($questionarray);
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foreach ($attempts as $attempt) {
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switch ($attemptselection) {
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case QUIZ_ALLATTEMPTS :
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$userscore = 0; // can be anything, not used
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break;
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case QUIZ_HIGHESTATTEMPT :
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$userscore = $attempt->sumgrades;
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break;
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case QUIZ_FIRSTATTEMPT :
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$userscore = $attempt->timemodified;
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break;
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case QUIZ_LASTATTEMPT :
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$userscore = $attempt->timemodified;
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break;
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}
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if ($attemptselection == QUIZ_ALLATTEMPTS || $userscore == $usermax[$attempt->userid]) {
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$sql = "SELECT q.*, i.grade AS maxgrade, i.id AS instance".
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" FROM {question} q,".
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" {quiz_question_instances} i".
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" WHERE i.quiz = '$quiz->id' AND q.id = i.question".
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" AND q.id IN ($questionlist)";
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if (!$quizquestions = $DB->get_records_sql($sql)) {
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print_error('noquestion', 'quiz');
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}
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// Load the question type specific information
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if (!get_question_options($quizquestions)) {
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print_error('cannotloadquestion', 'quiz');
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}
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// Restore the question sessions to their most recent states
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// creating new sessions where required
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if (!$states = get_question_states($quizquestions, $quiz, $attempt)) {
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print_error('cannotrestore', 'quiz');
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}
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$numbers = explode(',', $questionlist);
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$statsrow = array();
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foreach ($numbers as $i) {
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if (!isset($quizquestions[$i]) or !isset($states[$i])) {
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continue;
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}
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$qtype = ($quizquestions[$i]->qtype=='random') ? $states[$i]->options->question->qtype : $quizquestions[$i]->qtype;
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if($quizquestions[$i]->qtype =='randomsamatch'){
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$quizquestions[$i]->options =$states[$i]->options ;
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}
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$q = get_question_responses($quizquestions[$i], $states[$i]);
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if (empty($q)){
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continue;
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}
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$qid = $q->id;
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if (!isset($questions[$qid])) {
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$questions[$qid]['id'] = $qid;
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$questions[$qid]['qname'] = $quizquestions[$i]->name;
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foreach ($q->responses as $answer => $r) {
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$r->count = 0;
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$questions[$qid]['responses'][$answer] = $r->answer;
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$questions[$qid]['rcounts'][$answer] = 0;
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$questions[$qid]['credits'][$answer] = $r->credit;
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$statsrow[$qid] = 0;
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}
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}
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$responses = get_question_actual_response($quizquestions[$i], $states[$i]);
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foreach ($responses as $resp){
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if ($resp) {
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if ($key = array_search($resp, $questions[$qid]['responses'])) {
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$questions[$qid]['rcounts'][$key]++;
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} else {
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$test = new stdClass;
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$test->responses = $QTYPES[$quizquestions[$i]->qtype]->get_correct_responses($quizquestions[$i], $states[$i]);
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if ($key = $QTYPES[$quizquestions[$i]->qtype]->check_response($quizquestions[$i], $states[$i], $test)) {
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$questions[$qid]['rcounts'][$key]++;
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} else {
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$questions[$qid]['responses'][] = $resp;
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$questions[$qid]['rcounts'][] = 1;
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$questions[$qid]['credits'][] = 0;
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}
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}
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}
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}
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$statsrow[$qid] = get_question_fraction_grade($quizquestions[$i], $states[$i]);
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}
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$attemptscores[$attempt->id] = $attempt->sumgrades;
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$statstable[$attempt->id] = $statsrow;
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}
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} // Statistics Data table built
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unset($attempts);
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unset($quizquestions);
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unset($states);
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// now calculate statistics and set the values in the $questions array
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$top = max($attemptscores);
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$bottom = min($attemptscores);
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$gap = ($top - $bottom)/3;
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$top -=$gap;
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$bottom +=$gap;
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foreach ($questions as $qid=>$q) {
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$questions[$qid] = $this->report_question_stats($q, $attemptscores, $statstable, $top, $bottom);
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// calculate rpercent
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foreach($q['responses']as $aid => $resp){
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$rpercent = '('.format_float($q['rcounts'][$aid]/$q['count']*100,0).'%)';
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$questions[$qid]['rpercent'][$aid] = $rpercent ;
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}
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}
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unset($attemptscores);
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unset($statstable);
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*/
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/// Now check if asked download of data
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if ($download = optional_param('download', NULL)) {
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$filename = clean_filename("$course->shortname ".format_string($quiz->name,true));
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switch ($download) {
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case "Excel" :
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$this->Export_Excel($questions, $filename);
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break;
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case "ODS":
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$this->Export_ODS($questions, $filename);
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break;
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case "CSV":
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$this->Export_CSV($questions, $filename);
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break;
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case "HTML":
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$this->Export_HTML($questions, $filename);
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break;
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}
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}
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/// Construct the table for this particular report
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$tablecolumns = array('id', 'qname', 'responses', 'credits', 'rcounts', 'rpercent', 'facility', 'qsd','disc_index', 'disc_coeff');
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$tableheaders = array(get_string('qidtitle','quiz_analysis'), get_string('qtexttitle','quiz_analysis'),
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get_string('responsestitle','quiz_analysis'), get_string('rfractiontitle','quiz_analysis'),
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get_string('rcounttitle','quiz_analysis'), get_string('rpercenttitle','quiz_analysis'),
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get_string('facilitytitle','quiz_analysis'), get_string('stddevtitle','quiz_analysis'),
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get_string('dicsindextitle','quiz_analysis'), get_string('disccoefftitle','quiz_analysis'));
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$table = new flexible_table('mod-quiz-report-itemanalysis');
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$table->define_columns($tablecolumns);
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$table->define_headers($tableheaders);
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$table->define_baseurl($CFG->wwwroot.'/mod/quiz/report.php?q='.$quiz->id.'&mode=analysis');
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$table->sortable(true);
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// $table->no_sorting('rpercent');
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$table->collapsible(true);
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$table->initialbars(false);
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$table->column_class('id', 'numcol');
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$table->column_class('credits', 'numcol');
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$table->column_class('rcounts', 'numcol');
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// $table->column_class('rpercent', 'numcol');
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$table->column_class('facility', 'numcol');
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$table->column_class('qsd', 'numcol');
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$table->column_class('disc_index', 'numcol');
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$table->column_class('disc_coeff', 'numcol');
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$table->column_suppress('id');
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$table->column_suppress('qname');
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$table->column_suppress('facility');
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$table->column_suppress('qsd');
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$table->column_suppress('disc_index');
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$table->column_suppress('disc_coeff');
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$table->set_attribute('cellspacing', '0');
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$table->set_attribute('id', 'itemanalysis');
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$table->set_attribute('class', 'generaltable generalbox');
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// Start working -- this is necessary as soon as the niceties are over
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$table->setup();
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$tablesort = $table->get_sql_sort();
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$sorts = explode(",",trim($tablesort));
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if ($tablesort and is_array($sorts)) {
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$sortindex = array();
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$sortorder = array ();
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foreach ($sorts as $sort) {
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$data = explode(" ",trim($sort));
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$sortindex[] = trim($data[0]);
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$s = trim($data[1]);
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if ($s=="ASC") {
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$sortorder[] = SORT_ASC;
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} else {
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$sortorder[] = SORT_DESC;
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}
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}
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if (count($sortindex)>0) {
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$sortindex[] = "id";
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$sortorder[] = SORT_ASC;
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foreach($questions as $qid => $row){
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$index1[$qid] = $row[$sortindex[0]];
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$index2[$qid] = $row[$sortindex[1]];
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}
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array_multisort($index1, $sortorder[0], $index2, $sortorder[1], $questions);
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}
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}
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$format_options = new stdClass;
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$format_options->para = false;
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$format_options->noclean = true;
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$format_options->newlines = false;
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// Now it is time to page the data, simply slice the keys in the array
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$table->pagesize($pagesize, count($questions));
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$start = $table->get_page_start();
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$pagequestions = array_slice(array_keys($questions), $start, $pagesize);
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foreach($pagequestions as $qnum) {
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$q = $questions[$qnum];
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$qid = $q['id'];
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$question = $DB->get_record('question', array('id' => $qid));
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$qnumber = " (".link_to_popup_window('/question/question.php?id='.$qid,'editquestion', $qid, 450, 550, get_string('edit'), 'none', true ).") ";
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$qname = '<div class="qname">'.format_text($question->name." : ", $question->questiontextformat, $format_options, $quiz->course).'</div>';
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$qicon = print_question_icon($question, true);
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$qreview = quiz_question_preview_button($quiz, $question);
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$qtext = format_text($question->questiontext, $question->questiontextformat, $format_options, $quiz->course);
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$qquestion = $qname."\n".$qtext."\n";
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$responses = array();
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foreach ($q['responses'] as $aid=>$resp){
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$response = new stdClass;
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if ($q['credits'][$aid] <= 0) {
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$qclass = 'uncorrect';
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} elseif ($q['credits'][$aid] == 1) {
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$qclass = 'correct';
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} else {
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$qclass = 'partialcorrect';
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}
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$response->credit = '<span class="'.$qclass.'">('.format_float($q['credits'][$aid],2).') </span>';
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$response->text = '<span class="'.$qclass.'">'.format_text($resp, FORMAT_MOODLE, $format_options, $quiz->course).' </span>';
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$count = $q['rcounts'][$aid].'/'.$q['count'];
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$response->rcount = $count;
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$response->rpercent = $q['rpercent'][$aid];
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$responses[] = $response;
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}
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$facility = format_float($q['facility']*100,0)."%";
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$qsd = format_float($q['qsd'],3);
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$di = format_float($q['disc_index'],2);
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$dc = format_float($q['disc_coeff'],2);
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$response = array_shift($responses);
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$table->add_data(array($qnumber."\n<br />".$qicon."\n ".$qreview, $qquestion, $response->text, $response->credit, $response->rcount, $response->rpercent, $facility, $qsd, $di, $dc));
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foreach($responses as $response) {
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$table->add_data(array('', '', $response->text, $response->credit, $response->rcount, $response->rpercent, '', '', '', ''));
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}
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}
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print_heading_with_help(get_string("analysistitle", "quiz_analysis"),"itemanalysis", "quiz");
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echo '<div id="tablecontainer">';
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$table->print_html();
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echo '</div>';
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$this->print_options_form($quiz, $cm, $attemptselection, $lowmarklimit, $pagesize);
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return true;
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}
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function print_options_form($quiz, $cm, $attempts, $lowlimit=0, $pagesize=QUIZ_REPORT_DEFAULT_PAGE_SIZE) {
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global $CFG, $USER;
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echo '<div class="controls">';
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echo '<form id="options" action="report.php" method="post">';
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echo '<fieldset class="invisiblefieldset">';
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echo '<p class="quiz-report-options">'.get_string('analysisoptions', 'quiz').': </p>';
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echo '<input type="hidden" name="id" value="'.$cm->id.'" />';
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echo '<input type="hidden" name="q" value="'.$quiz->id.'" />';
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echo '<input type="hidden" name="mode" value="analysis" />';
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echo '<p><label for="menuattemptselection">'.get_string('attemptselection', 'quiz_analysis').'</label> ';
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$options = array ( QUIZ_ALLATTEMPTS => get_string("attemptsall", 'quiz_analysis'),
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QUIZ_HIGHESTATTEMPT => get_string("attemptshighest", 'quiz_analysis'),
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QUIZ_FIRSTATTEMPT => get_string("attemptsfirst", 'quiz_analysis'),
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QUIZ_LASTATTEMPT => get_string("attemptslast", 'quiz_analysis'));
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choose_from_menu($options, "attemptselection", "$attempts", "");
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echo '</p>';
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echo '<p><label for="lowmarklimit">'.get_string('lowmarkslimit', 'quiz_analysis').'</label> ';
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echo '<input type="text" id="lowmarklimit" name="lowmarklimit" size="1" value="'.$lowlimit.'" /> % </p>';
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echo '<p><label for="pagesize">'.get_string('pagesize', 'quiz_analysis').'</label> ';
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echo '<input type="text" id="pagesize" name="pagesize" size="1" value="'.$pagesize.'" /></p>';
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echo '<p><input type="submit" value="'.get_string('go').'" />';
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helpbutton("analysisoptions", get_string("analysisoptions",'quiz_analysis'), 'quiz');
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echo '</p>';
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echo '</fieldset>';
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echo '</form>';
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echo '</div>';
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echo "\n";
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echo '<table class="boxaligncenter"><tr>';
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$options = array();
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$options["id"] = "$cm->id";
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$options["q"] = "$quiz->id";
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$options["mode"] = "analysis";
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$options['sesskey'] = $USER->sesskey;
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$options["noheader"] = "yes";
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if (file_exists("$CFG->libdir/phpdocwriter/lib/include.php")) {
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echo '<td colspan="5" align="center">';
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}else {
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echo '<td colspan="4" align="center">';
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}
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$options["download"] = "HTML";
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print_single_button('report.php', $options, get_string("downloadhtml", "quiz_analysis"));
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echo "</td></tr>\n";
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echo '<tr><td>';
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$options["download"] = "ODS";
|
|
print_single_button("report.php", $options, get_string("downloadods"));
|
|
echo "</td>\n";
|
|
echo '<td>';
|
|
$options["download"] = "Excel";
|
|
print_single_button("report.php", $options, get_string("downloadexcel"));
|
|
echo "</td>\n";
|
|
|
|
if (file_exists("$CFG->libdir/phpdocwriter/lib/include.php")) {
|
|
echo '<td>';
|
|
$options["download"] = "OOo";
|
|
print_single_button("report.php", $options, get_string("downloadooo", "quiz_analysis"));
|
|
echo "</td>\n";
|
|
}
|
|
echo '<td>';
|
|
$options["download"] = "CSV";
|
|
print_single_button('report.php', $options, get_string("downloadtext"));
|
|
echo "</td>\n";
|
|
echo "<td>";
|
|
helpbutton('analysisdownload', get_string('analysisdownload', 'quiz_analysis'), 'quiz');
|
|
echo "</td>\n";
|
|
echo '</tr></table>';
|
|
}
|
|
|
|
function get_questions_atttempts_data ($quiz,&$questions,&$attempts,$attemptselection,$usermax){
|
|
global $CFG, $SESSION, $QTYPES, $DB;
|
|
|
|
/// Here we rewiew all attempts and record data to construct the table
|
|
$statstable = array();
|
|
$questionarray = array();
|
|
foreach ($attempts as $attempt) {
|
|
$questionarray[] = quiz_questions_in_quiz($attempt->layout);
|
|
}
|
|
$questionlist = quiz_questions_in_quiz(implode(",", $questionarray));
|
|
$questionarray = array_unique(explode(",",$questionlist));
|
|
$questionlist = implode(",", $questionarray);
|
|
unset($questionarray);
|
|
|
|
foreach ($attempts as $attempt) {
|
|
switch ($attemptselection) {
|
|
case QUIZ_ALLATTEMPTS :
|
|
$userscore = 0; // can be anything, not used
|
|
break;
|
|
case QUIZ_HIGHESTATTEMPT :
|
|
$userscore = $attempt->sumgrades;
|
|
break;
|
|
case QUIZ_FIRSTATTEMPT :
|
|
$userscore = $attempt->timemodified;
|
|
break;
|
|
case QUIZ_LASTATTEMPT :
|
|
$userscore = $attempt->timemodified;
|
|
break;
|
|
}
|
|
|
|
if ($attemptselection == QUIZ_ALLATTEMPTS || $userscore == $usermax[$attempt->userid]) {
|
|
|
|
list($usql, $params) = $DB->get_in_or_equal(explode(',', $questionlist));
|
|
$params = array_merge(array($quiz->id), $params);
|
|
$sql = "SELECT q.*, i.grade AS maxgrade, i.id AS instance".
|
|
" FROM {question} q,".
|
|
" {quiz_question_instances} i".
|
|
" WHERE i.quiz = ? AND q.id = i.question".
|
|
" AND q.id $usql";
|
|
|
|
if (!$quizquestions = $DB->get_records_sql($sql, $params)) {
|
|
print_error('noquestion', 'quiz');
|
|
}
|
|
|
|
// Load the question type specific information
|
|
if (!get_question_options($quizquestions)) {
|
|
print_error('cannotloadquestion', 'quiz');
|
|
}
|
|
// Restore the question sessions to their most recent states
|
|
// creating new sessions where required
|
|
if (!$states = get_question_states($quizquestions, $quiz, $attempt)) {
|
|
print_error('cannotrestore', 'quiz');
|
|
}
|
|
$numbers = explode(',', $questionlist);
|
|
$statsrow = array();
|
|
foreach ($numbers as $i) {
|
|
if (!isset($quizquestions[$i]) or !isset($states[$i])) {
|
|
continue;
|
|
}
|
|
$qtype = ($quizquestions[$i]->qtype=='random') ? $states[$i]->options->question->qtype : $quizquestions[$i]->qtype;
|
|
if($quizquestions[$i]->qtype =='randomsamatch'){
|
|
$quizquestions[$i]->options =$states[$i]->options ;
|
|
}
|
|
$q = get_question_responses($quizquestions[$i], $states[$i]);
|
|
if (empty($q)){
|
|
continue;
|
|
}
|
|
$qid = $q->id;
|
|
if (!isset($questions[$qid])) {
|
|
$questions[$qid]['id'] = $qid;
|
|
$questions[$qid]['qname'] = $quizquestions[$i]->name;
|
|
foreach ($q->responses as $answer => $r) {
|
|
$r->count = 0;
|
|
$questions[$qid]['responses'][$answer] = $r->answer;
|
|
$questions[$qid]['rcounts'][$answer] = 0;
|
|
$questions[$qid]['credits'][$answer] = $r->credit;
|
|
$statsrow[$qid] = 0;
|
|
}
|
|
}
|
|
$responses = get_question_actual_response($quizquestions[$i], $states[$i]);
|
|
foreach ($responses as $resp){
|
|
if ($resp) {
|
|
if ($key = array_search($resp, $questions[$qid]['responses'])) {
|
|
$questions[$qid]['rcounts'][$key]++;
|
|
} else {
|
|
$test = new stdClass;
|
|
$test->responses = $QTYPES[$quizquestions[$i]->qtype]->get_correct_responses($quizquestions[$i], $states[$i]);
|
|
if ($key = $QTYPES[$quizquestions[$i]->qtype]->check_response($quizquestions[$i], $states[$i], $test)) {
|
|
$questions[$qid]['rcounts'][$key]++;
|
|
} else {
|
|
$questions[$qid]['responses'][] = $resp;
|
|
$questions[$qid]['rcounts'][] = 1;
|
|
$questions[$qid]['credits'][] = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
$statsrow[$qid] = get_question_fraction_grade($quizquestions[$i], $states[$i]);
|
|
}
|
|
$attemptscores[$attempt->id] = $attempt->sumgrades;
|
|
$statstable[$attempt->id] = $statsrow;
|
|
}
|
|
} // Statistics Data table built
|
|
|
|
unset($attempts);
|
|
unset($quizquestions);
|
|
unset($states);
|
|
|
|
// now calculate statistics and set the values in the $questions array
|
|
$top = max($attemptscores);
|
|
$bottom = min($attemptscores);
|
|
$gap = ($top - $bottom)/3;
|
|
$top -=$gap;
|
|
$bottom +=$gap;
|
|
foreach ($questions as $qid=>$q) {
|
|
$questions[$qid] = $this->report_question_stats($q, $attemptscores, $statstable, $top, $bottom);
|
|
// calculate rpercent
|
|
foreach($q['responses']as $aid => $resp){
|
|
$rpercent = '('.format_float($q['rcounts'][$aid]/$q['count']*100,0).'%)';
|
|
$questions[$qid]['rpercent'][$aid] = $rpercent ;
|
|
}
|
|
$SESSION->quiz_analysis_table['question'][$qid]=$questions[$qid] ;
|
|
|
|
}
|
|
|
|
|
|
unset($attemptscores);
|
|
unset($statstable);
|
|
}
|
|
function report_question_stats(&$q, &$attemptscores, &$questionscores, $top, $bottom) {
|
|
$qstats = array();
|
|
$qid = $q['id'];
|
|
$top_scores = $top_count = 0;
|
|
$bottom_scores = $bottom_count = 0;
|
|
foreach ($questionscores as $aid => $qrow){
|
|
if (isset($qrow[$qid])){
|
|
$qstats[] = array($attemptscores[$aid],$qrow[$qid]);
|
|
if ($attemptscores[$aid]>=$top){
|
|
$top_scores +=$qrow[$qid];
|
|
$top_count++;
|
|
}
|
|
if ($attemptscores[$aid]<=$bottom){
|
|
$bottom_scores +=$qrow[$qid];
|
|
$bottom_count++;
|
|
}
|
|
}
|
|
}
|
|
$n = count($qstats);
|
|
$sumx = stats_sumx($qstats, array(0,0));
|
|
$sumg = $sumx[0];
|
|
$sumq = $sumx[1];
|
|
$sumx2 = stats_sumx2($qstats, array(0,0));
|
|
$sumg2 = $sumx2[0];
|
|
$sumq2 = $sumx2[1];
|
|
$sumxy = stats_sumxy($qstats, array(0,0));
|
|
$sumgq = $sumxy[0];
|
|
|
|
$q['count'] = $n;
|
|
$q['facility'] = $sumq/$n;
|
|
if ($n<2) {
|
|
$q['qsd'] = sqrt(($sumq2 - $sumq*$sumq/$n)/($n));
|
|
$gsd = sqrt(($sumg2 - $sumg*$sumg/$n)/($n));
|
|
} else {
|
|
$q['qsd'] = sqrt(($sumq2 - $sumq*$sumq/$n)/($n-1));
|
|
$gsd = sqrt(($sumg2 - $sumg*$sumg/$n)/($n-1));
|
|
}
|
|
$q['disc_index'] = ($top_scores - $bottom_scores)/max($top_count, $bottom_count, 1);
|
|
$div = $n*$gsd*$q['qsd'];
|
|
if ($div!=0) {
|
|
$q['disc_coeff'] = ($sumgq - $sumg*$sumq/$n)/$div;
|
|
} else {
|
|
$q['disc_coeff'] = -999;
|
|
}
|
|
return $q;
|
|
}
|
|
|
|
function Export_Excel(&$questions, $filename) {
|
|
global $CFG;
|
|
require_once("$CFG->libdir/excellib.class.php");
|
|
|
|
/// Calculate file name
|
|
$filename .= ".xls";
|
|
/// Creating a workbook
|
|
$workbook = new MoodleExcelWorkbook("-");
|
|
/// Sending HTTP headers
|
|
$workbook->send($filename);
|
|
/// Creating the first worksheet
|
|
$sheettitle = get_string('reportanalysis','quiz_analysis');
|
|
$myxls =& $workbook->add_worksheet($sheettitle);
|
|
/// format types
|
|
$format =& $workbook->add_format();
|
|
$format->set_bold(0);
|
|
$formatbc =& $workbook->add_format();
|
|
$formatbc->set_bold(1);
|
|
$formatb =& $workbook->add_format();
|
|
$formatb->set_bold(1);
|
|
$formaty =& $workbook->add_format();
|
|
$formaty->set_bg_color('yellow');
|
|
$formatyc =& $workbook->add_format();
|
|
$formatyc->set_bg_color('yellow'); //bold text on yellow bg
|
|
$formatyc->set_bold(1);
|
|
$formatyc->set_align('center');
|
|
$formatc =& $workbook->add_format();
|
|
$formatc->set_align('center');
|
|
$formatbc->set_align('center');
|
|
$formatbpct =& $workbook->add_format();
|
|
$formatbpct->set_bold(1);
|
|
$formatbpct->set_num_format('0.0%');
|
|
$formatbrt =& $workbook->add_format();
|
|
$formatbrt->set_bold(1);
|
|
$formatbrt->set_align('right');
|
|
$formatred =& $workbook->add_format();
|
|
$formatred->set_bold(1);
|
|
$formatred->set_color('red');
|
|
$formatred->set_align('center');
|
|
$formatblue =& $workbook->add_format();
|
|
$formatblue->set_bold(1);
|
|
$formatblue->set_color('blue');
|
|
$formatblue->set_align('center');
|
|
/// Here starts workshhet headers
|
|
$myxls->write_string(0,0,$sheettitle,$formatb);
|
|
|
|
$headers = array(strip_tags(get_string('row','quiz_analysis')),strip_tags(get_string('qidtitle','quiz_analysis')),
|
|
strip_tags(get_string('index','quiz_analysis')),strip_tags(get_string('qtypetitle','quiz_analysis')),
|
|
strip_tags(get_string('qnametitle','quiz_analysis')), strip_tags(get_string('qtexttitle','quiz_analysis')),
|
|
strip_tags(get_string('responsestitle','quiz_analysis')), strip_tags(get_string('rfractiontitle','quiz_analysis')),
|
|
strip_tags(get_string('rcounttitle','quiz_analysis')),
|
|
strip_tags(get_string('rcounttitle','quiz_analysis').'/'.get_string('qcounttitle','quiz_analysis')),
|
|
strip_tags(get_string('rpercenttitle','quiz_analysis')), strip_tags(get_string('qcounttitle','quiz_analysis')),
|
|
strip_tags(get_string('facilitytitle','quiz_analysis')), strip_tags(get_string('stddevtitle','quiz_analysis')),
|
|
strip_tags(get_string('dicsindextitle','quiz_analysis')), strip_tags(get_string('disccoefftitle','quiz_analysis')));
|
|
|
|
$col = 0;
|
|
foreach ($headers as $item) {
|
|
$myxls->write(2,$col,$item,$formatbc);
|
|
$col++;
|
|
}
|
|
|
|
$row = 3;
|
|
|
|
foreach($questions as $q) {
|
|
$r = $row -2;
|
|
$rows = $this->print_row_stats_data($q,$r);
|
|
foreach($rows as $rowdata){
|
|
$col = 0;
|
|
foreach($rowdata as $item){
|
|
$myxls->write($row,$col,$item,$format);
|
|
$col++;
|
|
}
|
|
$row++;
|
|
}
|
|
}
|
|
/// Close the workbook
|
|
$workbook->close();
|
|
|
|
exit;
|
|
}
|
|
|
|
|
|
function Export_ODS(&$questions, $filename) {
|
|
global $CFG;
|
|
require_once("$CFG->libdir/odslib.class.php");
|
|
|
|
/// Calculate file name
|
|
$filename .= ".ods";
|
|
/// Creating a workbook
|
|
$workbook = new MoodleODSWorkbook("-");
|
|
/// Sending HTTP headers
|
|
$workbook->send($filename);
|
|
/// Creating the first worksheet
|
|
$sheettitle = get_string('reportanalysis','quiz_analysis');
|
|
$myxls =& $workbook->add_worksheet($sheettitle);
|
|
/// format types
|
|
$format =& $workbook->add_format();
|
|
$format->set_bold(0);
|
|
$formatbc =& $workbook->add_format();
|
|
$formatbc->set_bold(1);
|
|
$formatb =& $workbook->add_format();
|
|
$formatb->set_bold(1);
|
|
$formaty =& $workbook->add_format();
|
|
$formaty->set_bg_color('yellow');
|
|
$formatyc =& $workbook->add_format();
|
|
$formatyc->set_bg_color('yellow'); //bold text on yellow bg
|
|
$formatyc->set_bold(1);
|
|
$formatyc->set_align('center');
|
|
$formatc =& $workbook->add_format();
|
|
$formatc->set_align('center');
|
|
$formatbc->set_align('center');
|
|
$formatbpct =& $workbook->add_format();
|
|
$formatbpct->set_bold(1);
|
|
$formatbpct->set_num_format('0.0%');
|
|
$formatbrt =& $workbook->add_format();
|
|
$formatbrt->set_bold(1);
|
|
$formatbrt->set_align('right');
|
|
$formatred =& $workbook->add_format();
|
|
$formatred->set_bold(1);
|
|
$formatred->set_color('red');
|
|
$formatred->set_align('center');
|
|
$formatblue =& $workbook->add_format();
|
|
$formatblue->set_bold(1);
|
|
$formatblue->set_color('blue');
|
|
$formatblue->set_align('center');
|
|
/// Here starts workshhet headers
|
|
$myxls->write_string(0,0,$sheettitle,$formatb);
|
|
$headers = array(strip_tags(get_string('row','quiz_analysis')),strip_tags(get_string('qidtitle','quiz_analysis')),
|
|
strip_tags(get_string('index','quiz_analysis')),strip_tags(get_string('qtypetitle','quiz_analysis')),
|
|
strip_tags(get_string('qnametitle','quiz_analysis')), strip_tags(get_string('qtexttitle','quiz_analysis')),
|
|
strip_tags(get_string('responsestitle','quiz_analysis')), strip_tags(get_string('rfractiontitle','quiz_analysis')),
|
|
strip_tags(get_string('rcounttitle','quiz_analysis')),
|
|
strip_tags(get_string('rcounttitle','quiz_analysis').'/'.get_string('qcounttitle','quiz_analysis')),
|
|
strip_tags(get_string('rpercenttitle','quiz_analysis')), strip_tags(get_string('qcounttitle','quiz_analysis')),
|
|
strip_tags(get_string('facilitytitle','quiz_analysis')), strip_tags(get_string('stddevtitle','quiz_analysis')),
|
|
strip_tags(get_string('dicsindextitle','quiz_analysis')), strip_tags(get_string('disccoefftitle','quiz_analysis')));
|
|
|
|
$col = 0;
|
|
foreach ($headers as $item) {
|
|
$myxls->write(2,$col,$item,$formatbc);
|
|
$col++;
|
|
}
|
|
|
|
$row = 3;
|
|
foreach($questions as $q) {
|
|
$r = $row -2;
|
|
$rows = $this->print_row_stats_data($q,$r);
|
|
foreach($rows as $rowdata){
|
|
$col = 0;
|
|
foreach($rowdata as $item){
|
|
$myxls->write($row,$col,$item,$format);
|
|
$col++;
|
|
}
|
|
$row++;
|
|
}
|
|
}
|
|
/// Close the workbook
|
|
$workbook->close();
|
|
|
|
exit;
|
|
}
|
|
|
|
function Export_CSV(&$questions, $filename) {
|
|
|
|
$headers = array(strip_tags(get_string('row','quiz_analysis')),strip_tags(get_string('qidtitle','quiz_analysis')),
|
|
strip_tags(get_string('index','quiz_analysis')),strip_tags(get_string('qtypetitle','quiz_analysis')),
|
|
strip_tags(get_string('qnametitle','quiz_analysis')), strip_tags(get_string('qtexttitle','quiz_analysis')),
|
|
strip_tags(get_string('responsestitle','quiz_analysis')), strip_tags(get_string('rfractiontitle','quiz_analysis')),
|
|
strip_tags(get_string('rcounttitle','quiz_analysis')),
|
|
strip_tags(get_string('rcounttitle','quiz_analysis').'/'.get_string('qcounttitle','quiz_analysis')),
|
|
strip_tags(get_string('rpercenttitle','quiz_analysis')), strip_tags(get_string('qcounttitle','quiz_analysis')),
|
|
strip_tags(get_string('facilitytitle','quiz_analysis')), strip_tags(get_string('stddevtitle','quiz_analysis')),
|
|
strip_tags(get_string('dicsindextitle','quiz_analysis')), strip_tags(get_string('disccoefftitle','quiz_analysis')));
|
|
|
|
$text = implode("\t", $headers)." \n";
|
|
|
|
$filename .= ".txt";
|
|
|
|
header("Content-Type: application/download\n");
|
|
header("Content-Disposition: attachment; filename=\"$filename\"");
|
|
header("Expires: 0");
|
|
header("Cache-Control: must-revalidate,post-check=0,pre-check=0");
|
|
header("Pragma: public");
|
|
|
|
echo $text;
|
|
|
|
$row = 1;
|
|
foreach($questions as $q) {
|
|
$rows = $this->print_row_stats_data_CSV($q,$row);
|
|
foreach($rows as $rowdata){
|
|
$text = implode("\t", $rowdata);
|
|
echo $text." \n";
|
|
$row++;
|
|
}
|
|
}
|
|
exit;
|
|
}
|
|
|
|
function print_row_stats_data_CSV(&$q,&$index) {
|
|
global $DB;
|
|
$qid = $q['id'];
|
|
$question = $DB->get_record('question', array('id' => $qid));
|
|
|
|
$options = new stdClass;
|
|
$options->para = false;
|
|
$options->noclean = true;
|
|
$options->newlines = false;
|
|
$qtype = $question->qtype;
|
|
$qname = format_text($question->name, FORMAT_MOODLE, $options);
|
|
$trans = str_replace('\t',' ',$question->questiontext);
|
|
$trans = substr($trans,0,390);
|
|
$order = array("\r\n", "\n", "\r");
|
|
$trans = str_replace($order,' ',$trans);
|
|
// $trans = explode(',',$trans);
|
|
|
|
// $qtext = format_text(implode('__',$trans), FORMAT_MOODLE, $options);
|
|
|
|
$qtext = format_text($trans, FORMAT_MOODLE, $options);
|
|
$responses = array();
|
|
foreach ($q['responses'] as $aid=>$resp){
|
|
$response = new stdClass;
|
|
if ($q['credits'][$aid] <= 0) {
|
|
$qclass = 'uncorrect';
|
|
} elseif ($q['credits'][$aid] == 1) {
|
|
$qclass = 'correct';
|
|
} else {
|
|
$qclass = 'partialcorrect';
|
|
}
|
|
$response->credit = " (".format_float($q['credits'][$aid],2).") ";
|
|
$response->text = format_text("$resp", FORMAT_MOODLE, $options);
|
|
$count = $q['rcounts'][$aid].'/'.$q['count'];
|
|
$response->count = $q['rcounts'][$aid];
|
|
$response->rcount = $count;
|
|
$response->rpercent = format_float($q['rcounts'][$aid]/$q['count']*100,0).'%';
|
|
$responses[] = $response;
|
|
}
|
|
$count = format_float($q['count'],0);
|
|
$facility = format_float($q['facility']*100,0);
|
|
$qsd = format_float($q['qsd'],4);
|
|
$di = format_float($q['disc_index'],3);
|
|
$dc = format_float($q['disc_coeff'],3);
|
|
$result = array();
|
|
$response = array_shift($responses);
|
|
$indexrep= 0;
|
|
$result[] = array($index,$qid,$indexrep, $qtype, $qname, $qtext,' ', ' ', ' ', ' ',' ', $count, $facility, $qsd, $di, $dc);
|
|
$index++ ;
|
|
$indexrep++;
|
|
$result[] = array($index,$qid,$indexrep, $qtype, $qname, substr($qtext,0,250) , $response->text, $response->credit, $response->count,$response->rcount, $response->rpercent, $count, ' ', ' ', ' ', ' ');
|
|
$index++ ;
|
|
$indexrep++;
|
|
foreach($responses as $response){
|
|
$result[] = array($index,$qid,$indexrep,$qtype,$qname,substr($qtext,0,250) , $response->text, $response->credit,$response->count, $response->rcount, $response->rpercent, $count, ' ', ' ', ' ', ' ');
|
|
$index++ ;
|
|
$indexrep++;
|
|
}
|
|
return $result;
|
|
}
|
|
function Export_HTML(&$questions, $filename) {
|
|
$headers = array();
|
|
$headers[] = '<font color="blue"><strong>'.get_string('qidtitle','quiz_analysis').'</strong></font>';
|
|
$headers[] = '<font color="blue"><strong>'.get_string('qtypetitle','quiz_analysis').'</strong></font>';
|
|
$headers[] = '<font color="green"><strong>'.get_string('qnametitle','quiz_analysis').':</strong></font>'.'<br />'.'<font color="blue"><strong>'.get_string('qtexttitle','quiz_analysis').'</strong></font>';
|
|
$headers[] = '<font color="blue"><strong>'.get_string('responsestitle','quiz_analysis').'</strong></font>';
|
|
$headers[] = '<font color="blue"><strong>'.get_string('rfractiontitle','quiz_analysis').'</strong></font>';
|
|
$headers[] = '<font color="blue"><strong>'.get_string('rcounttitle','quiz_analysis').' / '.get_string('qcounttitle','quiz_analysis').'</strong></font>';
|
|
$headers[] = '<font color="blue"><strong>'.get_string('rpercenttitle','quiz_analysis').'</strong></font>';
|
|
$headers[] = '<font color="blue"><strong>'.get_string('facilitytitle','quiz_analysis').'</strong></font>';
|
|
$headers[] = '<font color="blue"><strong>'.get_string('stddevtitle','quiz_analysis').'</strong></font>';
|
|
$headers[] = '<font color="blue"><strong>'.get_string('dicsindextitle','quiz_analysis').'</strong></font>';
|
|
$headers[] = '<font color="blue"><strong>'.get_string('disccoefftitle','quiz_analysis').'</strong></font>';
|
|
$text = implode("</td><td>", $headers)." \n";
|
|
|
|
$filename .= ".html";
|
|
header("Content-Type: application/download\n");
|
|
header("Content-Disposition: attachment; filename=\"$filename\"");
|
|
header("Expires: 0");
|
|
header("Cache-Control: must-revalidate,post-check=0,pre-check=0");
|
|
header("Pragma: public");
|
|
print_header();
|
|
echo '<table border = "1" bordercolor="#808080" cellspacing = "0" >';
|
|
echo '<tr><td>'.$text.'</td></tr>';
|
|
foreach($questions as $q) {
|
|
$rows = $this->print_row_stats_data_html($q);
|
|
foreach($rows as $row){
|
|
$text = implode("</td><td>", $row);
|
|
echo '<tr><td>'.$text.'</td></tr>';
|
|
//echo $text." \n";
|
|
}
|
|
}
|
|
echo '</table></div>';
|
|
echo '</div></body></html>';
|
|
exit;
|
|
}
|
|
function print_row_stats_data_html(&$q) {
|
|
global $QTYPE_MENU, $DB ;
|
|
$format_options = new stdClass;
|
|
$format_options->para = false;
|
|
$format_options->noclean = true;
|
|
$format_options->newlines = false;
|
|
|
|
$qid = $q['id'];
|
|
$question = $DB->get_record('question', array('id' => $qid));
|
|
$qnumber = "".$qid."";
|
|
$qname = '<font color="green">'.format_text($question->name, $question->questiontextformat, $format_options).':</font><br />';
|
|
$qicon = '';//print_question_icon($question, true);
|
|
$qreview = ''; //quiz_question_preview_button($quiz, $question);
|
|
$qtext = format_text($question->questiontext, $question->questiontextformat, $format_options);
|
|
$qquestion = '<table><tr><td>'.$qname."\n".$qtext."\n".'</td></tr></table>';
|
|
$qtype = $QTYPE_MENU[$question->qtype];
|
|
|
|
$responses = array();
|
|
foreach ($q['responses'] as $aid=>$resp){
|
|
$response = new stdClass;
|
|
if ($q['credits'][$aid] <= 0) {
|
|
$qclass = 'red';//'uncorrect';
|
|
} elseif ($q['credits'][$aid] == 1) {
|
|
$qclass = 'blue';//'correct';
|
|
} else {
|
|
$qclass = 'green';//'partialcorrect';
|
|
}
|
|
$response->credit = '<font color="'.$qclass.'">('.format_float($q['credits'][$aid],2).')</font>';
|
|
if ($response->text ='') {
|
|
$response->text =' ';
|
|
}
|
|
$response->text = '<font color="'.$qclass.'">'.format_text($resp, FORMAT_MOODLE, $format_options).'</font>';
|
|
$count = ' '.$q['rcounts'][$aid].' / '.$q['count'];
|
|
$response->rcount = $count;
|
|
$response->rpercent = $q['rpercent'][$aid];
|
|
$responses[] = $response;
|
|
}
|
|
|
|
$facility = format_float($q['facility']*100,0)."%";
|
|
$qsd = format_float($q['qsd'],3);
|
|
$di = format_float($q['disc_index'],2);
|
|
$dc = format_float($q['disc_coeff'],2);
|
|
|
|
$response = array_shift($responses);
|
|
$result[] =(array($qnumber,$qtype, $qquestion, $response->text, $response->credit, $response->rcount, $response->rpercent, $facility, $qsd, $di, $dc));
|
|
foreach($responses as $response) {
|
|
$result[]=(array(' ',' ',' ',$response->text, $response->credit, $response->rcount, $response->rpercent, ' ', ' ', ' ', ' '));
|
|
}
|
|
return $result;
|
|
}
|
|
function print_row_stats_data(&$q, &$index) {
|
|
global $DB;
|
|
$qid = $q['id'];
|
|
$question = $DB->get_record('question', array('id' => $qid));
|
|
|
|
$options = new stdClass;
|
|
$options->para = false;
|
|
$options->noclean = true;
|
|
$options->newlines = false;
|
|
|
|
$qtype = $question->qtype;
|
|
|
|
$qname = format_text($question->name, FORMAT_MOODLE, $options);
|
|
$qtext = format_text($question->questiontext, FORMAT_MOODLE, $options);
|
|
|
|
$responses = array();
|
|
foreach ($q['responses'] as $aid=>$resp){
|
|
$response = new stdClass;
|
|
if ($q['credits'][$aid] <= 0) {
|
|
$qclass = 'uncorrect';
|
|
} elseif ($q['credits'][$aid] == 1) {
|
|
$qclass = 'correct';
|
|
} else {
|
|
$qclass = 'partialcorrect';
|
|
}
|
|
$response->credit = " (".format_float($q['credits'][$aid],2).") ";
|
|
$response->text = format_text("$resp", FORMAT_MOODLE, $options);
|
|
$count = $q['rcounts'][$aid].'/'.$q['count'];
|
|
$response->count = $q['rcounts'][$aid];
|
|
$response->rcount = $count;
|
|
// $response->rpercent = format_float($q['rcounts'][$aid]/$q['count']*100,0).'%';
|
|
$response->rpercent = $q['rcounts'][$aid]/$q['count']*100.0;
|
|
$responses[] = $response;
|
|
}
|
|
$count = format_float($q['count'],0);
|
|
$facility = format_float($q['facility']*100,0);
|
|
$qsd = format_float($q['qsd'],4);
|
|
$di = format_float($q['disc_index'],3);
|
|
$dc = format_float($q['disc_coeff'],3);
|
|
|
|
$result = array();
|
|
$response = array_shift($responses);
|
|
$indexrep= 0;
|
|
$result[] = array($index,$qid,$indexrep, $qtype, $qname, $qtext,' ', ' ', ' ', ' ', ' ',$count, $facility, $qsd, $di, $dc);
|
|
$index++ ;
|
|
$indexrep++;
|
|
$result[] = array($index,$qid,$indexrep, $qtype, $qname, substr($qtext,0,250) , $response->text, $response->credit, $response->count,$response->rcount, $response->rpercent, $count, ' ', ' ', ' ', ' ');
|
|
$index++ ;
|
|
$indexrep++;
|
|
foreach($responses as $response){
|
|
$result[] = array($index,$qid,$indexrep,$qtype,$qname,substr($qtext,0,250) , $response->text, $response->credit, $response->count,$response->rcount, $response->rpercent, $count, ' ', ' ', ' ', ' ');
|
|
$index++ ;
|
|
$indexrep++;
|
|
}
|
|
return $result;
|
|
}
|
|
}
|
|
|
|
define('QUIZ_ALLATTEMPTS', 0);
|
|
define('QUIZ_HIGHESTATTEMPT', 1);
|
|
define('QUIZ_FIRSTATTEMPT', 2);
|
|
define('QUIZ_LASTATTEMPT', 3);
|
|
|
|
function stats_sumx($data, $initsum){
|
|
$accum = $initsum;
|
|
foreach ($data as $v) {
|
|
$accum[0] += $v[0];
|
|
$accum[1] += $v[1];
|
|
}
|
|
return $accum;
|
|
}
|
|
|
|
function stats_sumx2($data, $initsum){
|
|
$accum = $initsum;
|
|
foreach ($data as $v) {
|
|
$accum[0] += $v[0]*$v[0];
|
|
$accum[1] += $v[1]*$v[1];
|
|
}
|
|
return $accum;
|
|
}
|
|
|
|
function stats_sumxy($data, $initsum){
|
|
$accum = $initsum;
|
|
foreach ($data as $v) {
|
|
$accum[0] += $v[0]*$v[1];
|
|
$accum[1] += $v[1]*$v[0];
|
|
}
|
|
return $accum;
|
|
}
|
|
|
|
?>
|