Bonjour tout le monde,

J'ai un problème pour utiliser la librairie : jpgraph

Ci dessous est mon code:

Code : Sélectionner tout - Visualiser dans une fenêtre à part
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connect();
 
$xdata = array();
$ydata = array();
$moi = 59;
$today = date('Y-m');
 
$req = 'SELECT SUM(task_log_hours) as task_log_hours, date_format(task_log_date, "%Y-%m-%d") as mois
        FROM `task_log`
        WHERE `task_log_creator` = '.$moi.'
        AND `task_log_date` LIKE "'.$today.'%"
        GROUP BY mois';
$res = mysql_query($req);
 
 
while($row = mysql_fetch_assoc($res))
{
    $xdata[] = $row['task_log_hours'];
    $ydata[] = $row['mois'];
}
 
close();
 
// Get the interpolated values by creating
// a new Spline object.
$spline = new Spline($xdata,$ydata);
 
// For the new data set we want 40 points to
// get a smooth curve.
list($newx,$newy) = $spline->Get(50);
 
// Create the graph
$g = new Graph(300,200);
$g->SetMargin(30,20,40,30);
$g->title->Set("Natural cubic splines");
//$g->title->SetFont(FF_ARIAL,FS_NORMAL,12);
$g->subtitle->Set('(Nombre d\'heures/jour pendant un mois)');
$g->subtitle->SetColor('darkred');
$g->SetMarginColor('lightblue');
 
//$g->img->SetAntiAliasing();
 
// We need a linlin scale since we provide both
// x and y coordinates for the data points.
$g->SetScale('linlin');
 
// We want 1 decimal for the X-label
$g->xaxis->SetLabelFormat('%1.1f');
 
// We use a scatterplot to illustrate the original
// contro points.
$splot = new ScatterPlot($ydata,$xdata);
 
// 
$splot->mark->SetFillColor('red@0.3');
$splot->mark->SetColor('red@0.5');
 
// And a line plot to stroke the smooth curve we got
// from the original control points
$lplot = new LinePlot($newy,$newx);
$lplot->SetColor('navy');
 
// Add the plots to the graph and stroke
$g->Add($lplot);
$g->Add($splot);
$g->Stroke();
Et voici l'erreur que j'aie :
Invalid input data for spline. Two or more consecutive input X-values are equal. Each input X-value must differ since from a mathematical point of view it must be a one-to-one mapping, i.e. each X-value must correspond to exactly one Y-value.
Quelqu'un a une idée ?

PS : j'ai les données correctes depuis la BDD. Mais quand je mets des données en dur :
$ydata = array (8, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 9, 9, 2 ) ;
$xdata = array ("01", "02", "03", "04", "05", "06", "07", "08", "09", "10", "11", "12", "13", "14") ;
ça me donne un graphe.