/**
* Generate the choice result chart.
*
* Can be displayed either in the vertical or horizontal position.
*
* @param stdClass $choices Choices responses object.
* @param int $displaylayout The constants DISPLAY_HORIZONTAL_LAYOUT or DISPLAY_VERTICAL_LAYOUT.
* @return string the rendered chart.
*/
public function display_publish_anonymous($choices, $displaylayout)
{
global $OUTPUT;
$count = 0;
$data = [];
$numberofuser = 0;
$percentageamount = 0;
foreach ($choices->options as $optionid => $option) {
if (!empty($option->user)) {
$numberofuser = count($option->user);
}
if ($choices->numberofuser > 0) {
$percentageamount = (double) $numberofuser / (double) $choices->numberofuser * 100.0;
}
$data['labels'][$count] = $option->text;
$data['series'][$count] = $numberofuser;
$data['series_labels'][$count] = $numberofuser . ' (' . format_float($percentageamount, 1) . '%)';
$count++;
$numberofuser = 0;
}
$chart = new \core\chart_bar();
if ($displaylayout == DISPLAY_HORIZONTAL_LAYOUT) {
$chart->set_horizontal(true);
}
$series = new \core\chart_series(format_string(get_string("responses", "choice")), $data['series']);
$series->set_labels($data['series_labels']);
$chart->add_series($series);
$chart->set_labels($data['labels']);
$yaxis = $chart->get_yaxis(0, true);
$yaxis->set_stepsize(max(1, round(max($data['series']) / 10)));
return $OUTPUT->render($chart);
}
public function print_analysed($item, $itemnr = '', $groupid = false, $courseid = false)
{
global $OUTPUT;
$analysed_item = $this->get_analysed($item, $groupid, $courseid);
if ($analysed_item) {
echo "<table class=\"analysis itemtype_{$item->typ}\">";
echo '<tr><th colspan="2" align="left">';
echo $itemnr . ' ';
if (strval($item->label) !== '') {
echo '(' . format_string($item->label) . ') ';
}
echo format_string($analysed_item[1]);
echo '</th></tr>';
echo '</table>';
$analysed_vals = $analysed_item[2];
$avg = 0.0;
$count = 0;
$data = [];
foreach ($analysed_vals as $val) {
$avg += $val->avg;
$quotient = format_float($val->quotient * 100, 2);
$answertext = '(' . $val->value . ') ' . format_text(trim($val->answertext), FORMAT_HTML, array('noclean' => true, 'para' => false));
if ($val->quotient > 0) {
$strquotient = ' (' . $quotient . ' %)';
} else {
$strquotient = '';
}
$data['labels'][$count] = $answertext;
$data['series'][$count] = $val->answercount;
$data['series_labels'][$count] = $val->answercount . $strquotient;
$count++;
}
$chart = new \core\chart_bar();
$chart->set_horizontal(true);
$series = new \core\chart_series(format_string(get_string("responses", "feedback")), $data['series']);
$series->set_labels($data['series_labels']);
$chart->add_series($series);
$chart->set_labels($data['labels']);
echo $OUTPUT->render($chart);
$avg = format_float($avg, 2);
echo '<tr><td align="left" colspan="2"><b>';
echo get_string('average', 'feedback') . ': ' . $avg . '</b>';
echo '</td></tr>';
}
}
$chart5->add_series($sales);
$chart5->add_series($expenses);
$chart5->set_labels($labels);
$chart6 = new \core\chart_bar();
$chart6->set_title('HORIZONTAL BAR CHART');
$chart6->set_horizontal(true);
$chart6->add_series($sales);
$chart6->add_series($expenses);
$chart6->set_labels($labels);
$chart7 = new \core\chart_bar();
$chart7->set_title('STACKED BAR CHART');
$chart7->set_stacked(true);
$chart7->add_series($sales);
$chart7->add_series($expenses);
$chart7->set_labels($labels);
$chart8 = new \core\chart_bar();
$chart8->set_title('BAR CHART COMBINED WITH LINE CHART');
$expensesline = new \core\chart_series('Expenses', [400, 460, 1120, 540]);
$expensesline->set_type(\core\chart_series::TYPE_LINE);
$chart8->add_series($expensesline);
$chart8->add_series($sales);
$chart8->set_labels($labels);
echo $OUTPUT->render($chart);
echo $OUTPUT->render($chart2);
echo $OUTPUT->render($chart3);
echo $OUTPUT->render($chart4);
echo $OUTPUT->render($chart5);
echo $OUTPUT->render($chart6);
echo $OUTPUT->render($chart7);
echo $OUTPUT->render($chart8);
echo $OUTPUT->footer();
