function Set90AndMargin($lm = 0, $rm = 0, $tm = 0, $bm = 0)
{
$lm = $lm == 0 ? floor(0.2 * $this->img->width) : $lm;
$rm = $rm == 0 ? floor(0.1 * $this->img->width) : $rm;
$tm = $tm == 0 ? floor(0.2 * $this->img->height) : $tm;
$bm = $bm == 0 ? floor(0.1 * $this->img->height) : $bm;
$adj = ($this->img->height - $this->img->width) / 2;
$this->img->SetMargin($tm - $adj, $bm - $adj, $rm + $adj, $lm + $adj);
$this->img->SetCenter(floor($this->img->width / 2), floor($this->img->height / 2));
$this->SetAngle(90);
if (empty($this->yaxis) || empty($this->xaxis)) {
JpgraphError::RaiseL(25009);
//('You must specify what scale to use with a call to Graph::SetScale()');
}
$this->xaxis->SetLabelAlign('right', 'center');
$this->yaxis->SetLabelAlign('center', 'bottom');
}
