$hours[$i] = $i;
}
$rawlogs = report_log_userday($user->id, $courseselect, $daystart, $logreader);
if (empty($rawlogs)) {
return;
}
foreach ($rawlogs as $rawlog) {
$logs[$rawlog->hour] = $rawlog->num;
}
$graph = new graph(750, 400);
$a = new stdClass();
$a->coursename = format_string($course->shortname, true, array('context' => $coursecontext));
$a->username = fullname($user, true);
$graph->parameter['title'] = get_string("hitsoncoursetoday", "", $a);
$graph->x_data = $hours;
$graph->y_data['logs'] = $logs;
$graph->y_order = array('logs');
if (!empty($CFG->preferlinegraphs)) {
$graph->y_format['logs'] = array('colour' => 'blue', 'line' => 'line');
} else {
$graph->y_format['logs'] = array('colour' => 'blue', 'bar' => 'fill', 'bar_size' => 0.9);
}
$graph->parameter['y_label_left'] = get_string("hits");
$graph->parameter['label_size'] = "12";
$graph->parameter['x_axis_angle'] = 0;
$graph->parameter['x_label_angle'] = 0;
$graph->parameter['shadow'] = 'none';
error_reporting(5);
// Ignore most warnings such as font problems etc.
$graph->draw_stack();
}
/**
* Draw a graph image. Staked area
* @param $title string : title of graph
* @param $x_label string : x label
* @param $y_label string : y label
* @param $legends array : array of strings, values are the names of every serie
* @param $x_data array : x labels
* @param $y_data matrix : array of array of numbers first array is indexed by legend.
* @return nothing
*/
public static function draw($title, $x_label, $y_label, $x_data, $y_data, $legends = null, $type_bar = false)
{
$graph = new graph(750, 400);
$graph->parameter['title'] = $title;
$graph->parameter['x_label'] = $x_label;
$graph->parameter['y_label_left'] = $y_label;
$graph->x_data = $x_data;
if ($legends == null) {
$graph->parameter['shadow'] = 'gray66';
$graph->y_data = array('default_serie' => $y_data);
$legends = array('default_serie');
$cn = 0;
} else {
$graph->parameter['shadow'] = 'none';
$graph->y_data = $y_data;
$cn = 1;
}
$graph->y_order = $legends;
$graph->y_format = array();
$are_ints = true;
$max_value = 0;
foreach ($legends as $name) {
$graph->y_format[$name] = array('colour' => self::$colors[$cn++ % count(self::$colors)]);
if ($name != 'default_serie') {
$graph->y_format[$name]['legend'] = $name;
}
if ($type_bar) {
$graph->y_format[$name]['bar'] = 'fill';
$graph->y_format[$name]['bar_size'] = 0.9;
} else {
$graph->y_format[$name]['area'] = 'fill';
}
foreach ($graph->y_data[$name] as $value) {
$max_value = max($max_value, $value);
$are_ints = $are_ints && (int) ($value * 100) % 100 == 0;
}
}
if ($are_ints && $max_value <= 14) {
$graph->parameter['y_axis_gridlines'] = $max_value + 1;
$graph->parameter['y_decimal_left'] = 0;
} else {
$range = 0.1;
for ($i = 0; $i < 30; $i++) {
if ($range * 15 > $max_value) {
break;
}
$range = $range * 2.5;
if ($range * 15 > $max_value) {
break;
}
$range *= 2;
if ($range * 15 > $max_value) {
break;
}
$range *= 2;
}
$rem = $max_value - (int) ($max_value / $range) * $range;
if ($rem > 0) {
$max_value = $max_value + $range - $rem;
}
$gridlines = (int) ($max_value / $range) + 1;
$graph->parameter['y_axis_gridlines'] = $gridlines;
$graph->parameter['y_max_left'] = $max_value;
$graph->parameter['y_min_left'] = 0;
if ($max_value >= 1) {
$graph->parameter['y_resolution_left'] = 4;
//Don't ajust y_max
} else {
$graph->parameter['y_resolution_left'] = 0;
}
if ((int) $range == $range) {
$graph->parameter['y_decimal_left'] = 0;
} elseif ((int) ($range * 10) == 10 * $range) {
$graph->parameter['y_decimal_left'] = 1;
} else {
$graph->parameter['y_decimal_left'] = 2;
}
}
$graph->parameter['label_size'] = "12";
$graph->parameter['legend_size'] = "10";
$graph->parameter['x_label_angle'] = 0;
$graph->parameter['tick_length'] = 0;
$graph->parameter['legend'] = 'inside-top';
$graph->parameter['shadow_offset'] = 5;
$graph->parameter['shadow_below_axis'] = false;
error_reporting(5);
// ignore warnings
$graph->draw_stack();
}
