<?php

require_once "../../ScatterPlot.class.php";
$graph = new Graph(300, 200);
$graph->title->set('Impulses');
$graph->shadow->setSize(4);
$y = array();
for ($i = 0; $i < 40; $i++) {
    $y[] = cos($i / 15 * 2 * M_PI) / (0.8 + $i / 15) * 4;
}
$plot = new ScatterPlot($y);
$plot->setPadding(25, 15, 35, 15);
$plot->setBackgroundColor(new Color(230, 230, 255));
$plot->setSpace(2, 2);
// Set impulses
$plot->setImpulse(new DarkBlue());
$plot->grid->hideVertical();
$plot->grid->setType(LINE_DASHED);
// Hide ticks
$plot->xAxis->hideTicks();
$plot->xAxis->label->hide();
$plot->mark->setType(MARK_SQUARE);
$plot->mark->setSize(4);
$graph->add($plot);
$graph->draw();
<?php

require_once "../ScatterPlot.class.php";
$graph = new Graph(400, 400);
$graph->shadow->setSize(5);
$y = array();
for ($i = 0; $i < 60; $i++) {
    $y[] = cos($i / 30 * 2 * M_PI);
}
$plot = new ScatterPlot($y);
$plot->setSpace(6, 6);
// Set impulses
$plot->setImpulse(new DarkGreen());
$plot->grid->hideVertical();
// Hide axis labels and ticks
$plot->xAxis->label->hide();
$plot->xAxis->hideTicks();
$plot->mark->setType(MARK_SQUARE);
$plot->mark->setSize(4);
$graph->add($plot);
$graph->draw();