function getGraph(array $a_graph_items)
{
global $lng;
$a_graph_items = array(array_pop($a_graph_items));
include_once "Services/Chart/classes/class.ilChart.php";
$chart = new ilChart("objstlp", 700, 500);
$legend = new ilChartLegend();
$chart->setLegend($legend);
// needed for correct stacking
$custom_order = array(ilLPStatus::LP_STATUS_IN_PROGRESS_NUM => array("#f7d408", "#fffa00"), ilLPStatus::LP_STATUS_FAILED_NUM => array("#cf0202", "#f15b5b"), ilLPStatus::LP_STATUS_COMPLETED_NUM => array("#17aa0e", "#6ce148"), ilLPStatus::LP_STATUS_NOT_ATTEMPTED_NUM => array("#a4a4a4", "#c4c4c4"));
$chart->setColors(array());
$max_value = 0;
foreach ($this->chart_data as $object_id => $days) {
if (in_array($object_id, $a_graph_items)) {
$series = array();
foreach ($custom_order as $status => $colors) {
/*
if(strpos($this->filter["yearmonth"], "-") === false)
{
$series[$status] = new ilChartData("lines");
$series[$status]->setLineSteps(true);
}
else
{
$series[$status] = new ilChartData("bars");
$series[$status]->setBarOptions(0.75);
$series[$status]->setFill(true, $colors[1]);
}
$series[$status]->setStackingId($object_id);
*/
$series[$status] = new ilChartData("lines");
$series[$status]->setLabel(ilLearningProgressBaseGUI::_getStatusText($status));
$chart_colors[] = $colors[0];
}
$chart->setColors($chart_colors);
if (strpos($this->filter["yearmonth"], "-") === false) {
$x_axis = $this->lng->txt("month");
$counter = 0;
foreach (array_keys($this->getMonthsYear($this->filter["yearmonth"])) as $month) {
for ($loop = 1; $loop < 32; $loop++) {
$item_day = $month . "-" . str_pad($loop, 2, "0", STR_PAD_LEFT);
foreach (array_keys($custom_order) as $status) {
if (isset($days[$item_day])) {
// as there is only 1 entry per day, avg == sum
$value = (int) $days[$item_day][$this->status_map[$status] . "_avg"];
} else {
$value = 0;
}
$max_value = max($max_value, $value);
$value = $this->anonymizeValue($value, true);
$series[$status]->addPoint($counter, $value);
}
$counter++;
}
}
} else {
$x_axis = $this->lng->txt("day");
for ($loop = 1; $loop < 32; $loop++) {
foreach (array_keys($custom_order) as $status) {
if (isset($days[$loop])) {
// as there is only 1 entry per day, avg == sum
$value = (int) $days[$loop][$this->status_map[$status] . "_avg"];
} else {
$value = 0;
}
$max_value = max($max_value, $value);
$value = $this->anonymizeValue($value, true);
$series[$status]->addPoint($loop, $value);
}
}
}
foreach (array_keys($custom_order) as $status) {
$chart->addData($series[$status]);
}
}
}
$value_ticks = $this->buildValueScale($max_value, true);
$labels = array();
if (strpos($this->filter["yearmonth"], "-") === false) {
$counter = 0;
foreach ($this->getMonthsYear($this->filter["yearmonth"], true) as $caption) {
$labels[$counter] = $caption;
$counter += 31;
}
} else {
for ($loop = 1; $loop < 32; $loop++) {
$labels[$loop] = $loop . ".";
}
}
$chart->setTicks($labels, $value_ticks, true);
return $chart->getHTML();
}
/**
* Build chart for active sessions
*
* @param array $a_data
* @param string $a_title
* @param int $a_scale
* @param array $a_measure
* @return string
*/
protected function getChart($a_data, $a_title, $a_scale = self::SCALE_DAY, $a_measure = null)
{
global $lng;
include_once "Services/Chart/classes/class.ilChart.php";
$chart = new ilChart("objstacc", 700, 500);
$chart->setYAxisToInteger(true);
$legend = new ilChartLegend();
$chart->setLegend($legend);
if (!$a_measure) {
$a_measure = array("min", "avg", "max");
} else {
if (!is_array($a_measure)) {
$a_measure = array($a_measure);
}
}
$colors_map = array("min" => "#00cc00", "avg" => "#0000cc", "max" => "#cc00cc");
$colors = $act_line = array();
foreach ($a_measure as $measure) {
$act_line[$measure] = new ilChartData("lines");
$act_line[$measure]->setLineSteps(true);
$act_line[$measure]->setLabel($lng->txt("trac_session_active_" . $measure));
$colors[] = $colors_map[$measure];
}
if ($a_scale != self::SCALE_PERIODIC_WEEK) {
$max_line = new ilChartData("lines");
$max_line->setLabel($lng->txt("session_max_count"));
$colors[] = "#cc0000";
}
$chart->setColors($colors);
$chart_data = $this->adaptDataToScale($a_scale, $a_data, 700);
unset($a_data);
$scale = ceil(sizeof($chart_data) / 5);
$labels = array();
foreach ($chart_data as $idx => $item) {
$date = $item["slot_begin"];
if ($a_scale == self::SCALE_PERIODIC_WEEK || !($idx % ceil($scale))) {
switch ($a_scale) {
case self::SCALE_DAY:
$labels[$date] = date("H:i", $date);
break;
case self::SCALE_WEEK:
$labels[$date] = date("d.m. H", $date) . "h";
break;
case self::SCALE_MONTH:
$labels[$date] = date("d.m.", $date);
break;
case self::SCALE_YEAR:
$labels[$date] = date("Y-m", $date);
break;
case self::SCALE_PERIODIC_WEEK:
$day = substr($date, 0, 1);
$hour = substr($date, 1, 2);
$min = substr($date, 3, 2);
// build ascending scale from day values
$day_value = ($day - 1) * 60 * 60 * 24;
$date = $day_value + $hour * 60 * 60 + $min * 60;
// 6-hour interval labels
if ($hour != $old_hour && $hour && $hour % 6 == 0) {
$labels[$date] = $hour;
$old_hour = $hour;
}
// day label
if ($day != $old_day) {
$labels[$date] = ilCalendarUtil::_numericDayToString($day, false);
$old_day = $day;
}
break;
}
}
foreach ($a_measure as $measure) {
$value = (int) $item["active_" . $measure];
$act_line[$measure]->addPoint($date, $value);
}
if ($a_scale != self::SCALE_PERIODIC_WEEK) {
$max_line->addPoint($date, (int) $item["max_sessions"]);
}
}
foreach ($act_line as $line) {
$chart->addData($line);
}
if ($a_scale != self::SCALE_PERIODIC_WEEK) {
$chart->addData($max_line);
}
$chart->setTicks($labels, null, true);
return $chart->getHTML();
}
