$graph = new Graph\WindroseGraph(650, 350);
$graph->title->Set('Interpretation of ordinal keys');
$graph->title->SetFont(FF_VERDANA, FS_BOLD, 14);
$graph->title->SetColor('navy');
// Create the first plot
$wp1 = new Plot\WindrosePlot($data);
$wp1->SetType(WINDROSE_TYPE16);
// This is the default encoding
$wp1->SetDataKeyEncoding(KEYENCODING_ANTICLOCKWISE);
$wp1->legend->Hide();
$wp1->SetPos($xpos1, $ypos1);
$wp1->SetSize(0.5);
// Create the second plot
$wp2 = new Plot\WindrosePlot($data);
$wp2->SetType(WINDROSE_TYPE16);
$wp2->SetDataKeyEncoding(KEYENCODING_CLOCKWISE);
$wp2->legend->Hide();
$wp2->SetPos($xpos2, $ypos1);
$wp2->SetSize(0.5);
$txt1 = new Text('KEYENCODING_ANTICLOCKWISE');
$txt1->SetFont(FF_COURIER, FS_BOLD, 12);
$txt1->SetPos($xpos1, $ypos2);
$txt1->SetAlign('center', 'top');
$txt2 = new Text('KEYENCODING_CLOCKWISE');
$txt2->SetFont(FF_COURIER, FS_BOLD, 12);
$txt2->SetPos($xpos2, $ypos2);
$txt2->SetAlign('center', 'top');
// Finally add it to the graph and send back to the client
$graph->Add($wp1);
$graph->Add($txt1);
$graph->Add($wp2);