function plot_histogram($image_filename, $param)
{
extract($param);
$histo = get_histogram($image_filename);
if (empty($histo)) {
return;
}
for ($i = 0; $i < 256; $i++) {
$data[$i] = array('', $histo[$i]);
}
$p = new PHPlot_truecolor($plot_image_width, $plot_image_height);
$p->SetFileFormat('jpg');
$p->SetBgImage($image_filename, 'scale');
$p->SetDataType('text-data');
$p->SetDrawXAxis(False);
$p->SetDrawYAxis(False);
$p->SetDataValues($data);
$p->SetXDataLabelPos('none');
$p->SetXTickLabelPos('none');
$p->SetYTickLabelPos('none');
$p->SetXTickPos('none');
$p->SetYTickPos('none');
$p->SetDrawYGrid(False);
$p->SetDataColors($histogram_color, NULL, $histogram_alpha);
$p->SetPlotType('thinbarline');
if ($draw_border) {
$p->SetGridColor($border_color);
$p->SetPlotBorderType('full');
} else {
$p->SetPlotBorderType('none');
}
# Compute the position of the histogram plot within the image.
$hx0 = (int) ($hx * $plot_image_width);
$hy0 = (int) ($hy * $plot_image_height);
$hx1 = (int) ($h_width * $plot_image_width) + $hx0;
$hy1 = (int) ($h_height * $plot_image_height) + $hy0;
$p->SetPlotAreaPixels($hx0, $hy0, $hx1, $hy1);
$p->DrawGraph();
}
$responses = $post["responses"];
foreach ($responses as $response) {
$userId = $response["user"];
$userName = $users[$userId];
if (!isset($nbContrib[$userName])) {
$nbContrib[$userName] = 1;
} else {
$nbContrib[$userName]++;
}
}
}
$posX = 10;
$maxHeight = max($nbContrib) * 10;
foreach ($nbContrib as $userName => $nb) {
$height = $nb * 10;
$posY = $maxHeight - $height;
$posYText = $maxHeight + 20;
$svg .= "\t<rect width='30' height='{$height}' x='{$posX}' y='{$posY}' />\n";
$svg .= "\t<text x='{$posX}' y='{$posYText}' font-size='60%'>{$userName}</text>\n\n";
$posX = $posX + 100;
}
$svg .= "</g>\n</svg>\n";
return $svg;
}
//Test
require_once "constantes.php";
require_once "functions.php";
require_once "forum.sax.php";
lancer_phraseur(FORUM_FILE);
echo get_histogram($forum, $users);
){kind=link}