[Sommaire] [Imprimer]

   1  <?php
   2  require_once ("../jpgraph.php");
   3  require_once ("../jpgraph_line.php");
   4  require_once ("../jpgraph_date.php");
   5  
   6  // Create a data set in range (50,70) and X-positions
   7  DEFINE('NDATAPOINTS',360);
   8  DEFINE('SAMPLERATE',240); 
   9  $start = time();
  10  $end = $start+NDATAPOINTS*SAMPLERATE;
  11  $data = array();
  12  $xdata = array();
  13  for( $i=0; $i < NDATAPOINTS; ++$i ) {
  14      $data[$i] = rand(50,70);
  15      $xdata[$i] = $start + $i * SAMPLERATE;
  16  }
  17  
  18  
  19  // Create the new graph
  20  $graph = new Graph(540,300);
  21  
  22  // Slightly larger than normal margins at the bottom to have room for
  23  // the x-axis labels
  24  $graph->SetMargin(40,40,30,130);
  25  
  26  // Fix the Y-scale to go between [0,100] and use date for the x-axis
  27  $graph->SetScale('datlin',0,100);
  28  $graph->title->Set("Example on Date scale");
  29  
  30  // Set the angle for the labels to 90 degrees
  31  $graph->xaxis->SetLabelAngle(90);
  32  
  33  // It is possible to adjust the density for the X-axis as well
  34  // The following call makes the dates a little more sparse
  35  // $graph->SetTickDensity(TICKD_NORMAL,TICKD_SPARSE);
  36  
  37  // The automatic format string for dates can be overridden
  38  // $graph->xaxis->scale->SetDateFormat('h:i');
  39  
  40  // Adjust the start/end to a specific alignment
  41  $graph->xaxis->scale->SetTimeAlign(MINADJ_15);
  42  
  43  $line = new LinePlot($data,$xdata);
  44  $line->SetLegend('Year 2005');
  45  $line->SetFillColor('lightblue@0.5');
  46  $graph->Add($line);
  47  $graph->Stroke();
  48  ?>