[Sommaire] [Imprimer]

   1  <?php
   2  include  ("../jpgraph.php");
   3  include  ("../jpgraph_scatter.php");
   4  
   5  $numpoints=50;
   6  $k=0.05;
   7  
   8  // Create some data points
   9  for($i=0; $i<$numpoints; ++$i) {
  10      $datay[$i]=exp(-$k*$i)*cos(2*M_PI/10*$i);
  11  }
  12  
  13  // A format callbakc function
  14  function mycallback($l) {
  15      return sprintf("%02.2f",$l);
  16  }
  17  
  18  // Setup the basic parameters for the graph
  19  $graph = new Graph(400,200,"auto");
  20  $graph->SetScale("intlin");
  21  $graph->SetShadow();
  22  $graph->SetBox();
  23  
  24  $graph->title->Set("Impuls Example 3");
  25  $graph->title->SetFont(FF_FONT1,FS_BOLD);
  26  
  27  // Set format callback for labels
  28  $graph->yaxis->SetLabelFormatCallback("mycallback");
  29  
  30  // Set X-axis at the minimum value of Y-axis (default will be at 0)
  31  $graph->xaxis->SetPos("min");    // "min" will position the x-axis at the minimum value of the Y-axis
  32  
  33  // Extend the margin for the labels on the Y-axis and reverse the direction
  34  // of the ticks on the Y-axis
  35  $graph->yaxis->SetLabelMargin(12);
  36  $graph->xaxis->SetLabelMargin(6);
  37  $graph->yaxis->SetTickSide(SIDE_LEFT);
  38  $graph->xaxis->SetTickSide(SIDE_DOWN);
  39  
  40  // Create a new impuls type scatter plot
  41  $sp1 = new ScatterPlot($datay);
  42  $sp1->mark->SetType(MARK_SQUARE);
  43  $sp1->mark->SetFillColor("red");
  44  $sp1->SetImpuls();
  45  $sp1->SetColor("blue");
  46  $sp1->SetWeight(1);
  47  $sp1->mark->SetWidth(3);
  48  
  49  $graph->Add($sp1);
  50  
  51  $graph->Stroke();
  52  
  53  ?>