function init($drawer)
{
list($x1, $y1, $x2, $y2) = $this->getPosition();
$this->xAxis->line->setX($x1, $x2);
$this->xAxis->label->setAlign(NULL, LABEL_BOTTOM);
$this->xAxis->label->move(0, 3);
$this->xAxis->setRange($this->extremum->left, $this->extremum->right);
$this->yAxis->line->setY($y2, $y1);
$this->yAxis->label->setAlign(LABEL_RIGHT);
$this->yAxis->label->move(-6, 0);
$this->yAxis->reverseTickStyle();
$this->yAxis->setRange($this->extremum->bottom, $this->extremum->top);
$this->xAxis->setYCenter($this->yAxis, 0);
$this->yAxis->setXCenter($this->xAxis, 0);
if ($this->yAxis->getLabelNumber() === NULL) {
$number = $this->extremum->top - $this->extremum->bottom + 1;
$this->yAxis->setLabelNumber($number);
}
if ($this->xAxis->getLabelNumber() === NULL) {
$number = $this->extremum->right - $this->extremum->left + 1;
$this->xAxis->setLabelNumber($number);
}
// Set ticks
$this->xAxis->ticks['major']->setNumber($this->xAxis->getLabelNumber());
$this->yAxis->ticks['major']->setNumber($this->yAxis->getLabelNumber());
// Set axis labels
$labels = array();
for ($i = 0, $count = $this->xAxis->getLabelNumber(); $i < $count; $i++) {
$labels[] = $i;
}
$this->xAxis->label->set($labels);
$labels = array();
for ($i = 0, $count = $this->yAxis->getLabelNumber(); $i < $count; $i++) {
$labels[] = $i;
}
$this->yAxis->label->set($labels);
parent::init($drawer);
// Create the grid
$this->createGrid();
// Draw the grid
$this->grid->draw($drawer, $x1, $y1, $x2, $y2);
}
