function display_chart($data)
{
//echo "data : "; var_dump($data); echo "<br />";
$i = 0;
foreach ($data as $abs => $val) {
//echo "$abs => $val <br />";
$abscissa[$i] = $abs;
//$arr[month_to_string($res[0])] = $res[1];
$i++;
}
$maxval = max($data);
$chart = new GoogleChart('lc', 600, 300);
$chart->setScale(0, $maxval);
$line = new GoogleChartData($data);
$chart->addData($line);
$y_axis = new GoogleChartAxis('y');
$y_axis->setDrawTickMarks(false);
$y_axis->setRange(0, $maxval);
// $y_axis->setLabels(array(0,10,20,30));
$chart->addAxis($y_axis);
$x_axis = new GoogleChartAxis('x');
$x_axis->setTickMarks(5);
$x_axis->setLabels($abscissa);
$chart->addAxis($x_axis);
// add a shape marker with a border
$shape_marker = new GoogleChartShapeMarker(GoogleChartShapeMarker::CIRCLE);
$shape_marker->setSize(6);
$shape_marker->setBorder(2);
$shape_marker->setData($line);
$chart->addMarker($shape_marker);
// add a value marker
$value_marker = new GoogleChartTextMarker(GoogleChartTextMarker::VALUE);
$value_marker->setData($line);
$chart->addMarker($value_marker);
// var_dump($chart->getQuery());
// echo $chart->validate();
echo $chart->toHtml();
}
static function renderChart(&$params)
{
// get data
$db = JFactory::getDBO();
$value_data = array();
$history = intval($params->get('history', 7));
// currently active users
$query = 'select count(tdate) as unique_visitors, tdate from (SELECT date(timestamp) as tdate from #__rokuserstats WHERE timestamp >= date_sub(curdate(),interval ' . $history . ' day) group by ip, user_id, tdate order by tdate) as foo group by tdate';
$db->setQuery($query);
$data = $db->loadObjectList();
if (is_array($data)) {
foreach ($data as $row) {
$value_data[] = $row->unique_visitors;
}
}
if (empty($value_data)) {
$value_data[] = 0;
}
$max = max($value_data);
require_once 'googlechartlib/GoogleChart.php';
$chart = new GoogleChart('lc', $params->get('width', 285), $params->get('height', 120));
$chart->setTitle(JTEXT::sprintf('MC_RUC_TITLE', intval($history)));
$chart->setTitleColor('666666')->setTitleSize(13);
$data = new GoogleChartData($value_data);
$data->setColor('4F9BD8');
$data->setThickness(2);
$chart->addData($data);
$y_axis = new GoogleChartAxis('y');
$y_axis->setRange(0, $max);
$y_axis->setTickMarks(2);
$x_axis = new GoogleChartAxis('x');
$x_axis->setRange(0, count($value_data) - 1);
$x_axis->setTickMarks(2);
$chart->addAxis($y_axis);
$chart->addAxis($x_axis);
return $chart->toHtml();
}
$chart->setTitleColor('FFFFFF');
$chart->setTitleSize(18);
$sin = new GoogleChartData($sin);
$sin->setLegend('Sinus');
$sin->setThickness(2);
$sin->setColor('D1F2A5');
$chart->addData($sin);
$cos = new GoogleChartData($cos);
$cos->setLegend('Cosinus');
$cos->setThickness(2);
$cos->setColor('F56991');
$chart->addData($cos);
$y_axis = new GoogleChartAxis('y');
$y_axis->setDrawLine(false);
$y_axis->setRange(-1, 1);
$y_axis->setLabelColor('ffffff');
$chart->addAxis($y_axis);
$x_axis = new GoogleChartAxis('x');
$x_axis->setDrawLine(false);
$x_axis->setRange(0, 360);
$x_axis->setLabels(array(0, 90, 180, 270, 360));
$x_axis->setLabelColor('ffffff');
$chart->addAxis($x_axis);
if (isset($_GET['debug'])) {
var_dump($chart->getQuery());
echo $chart->validate();
echo $chart->toHtml();
} else {
header('Content-Type: image/png');
echo $chart;
}
function sin_cos()
{
$sin = array();
$cos = array();
for ($i = 0; $i <= 360; $i += 10) {
$sin[] = round(sin($i * M_PI / 180), 2);
$cos[] = round(cos($i * M_PI / 180), 2);
}
$chart = new GoogleChart('lc', 500, 200);
$chart->setGridLines(25, 50, 1, 1);
$chart->setMargin(30, 50);
$chart->setLegendSize(100, 10);
$chart->setFill('333333');
$chart->setFill('444444', GoogleChart::CHART_AREA);
$chart->setTitle('Sinus & Cosinus');
$chart->setTitleColor('FFFFFF');
$chart->setTitleSize(18);
$sin = new GoogleChartData($sin);
$sin->setLegend('Sinus');
$sin->setThickness(2);
$sin->setColor('D1F2A5');
$chart->addData($sin);
$cos = new GoogleChartData($cos);
$cos->setLegend('Cosinus');
$cos->setThickness(2);
$cos->setColor('F56991');
$chart->addData($cos);
$y_axis = new GoogleChartAxis('y');
$y_axis->setDrawLine(false);
$y_axis->setRange(-1, 1);
$y_axis->setLabelColor('ffffff');
$chart->addAxis($y_axis);
$x_axis = new GoogleChartAxis('x');
$x_axis->setDrawLine(false);
$x_axis->setRange(0, 360);
$x_axis->setLabels(array(0, 90, 180, 270, 360));
$x_axis->setLabelColor('ffffff');
$chart->addAxis($x_axis);
return $chart->getUrl();
}
