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site/jpgraph/Examples/manualtickex3.php 2.41 KB
8ec98c9f   Guillaume   MAJ
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  <?php // content="text/plain; charset=utf-8"
  //
  // Basic example on how to use custom tickmark feature to have a label
  // at the start of each month.
  //
  require_once ('jpgraph/jpgraph.php');
  require_once ('jpgraph/jpgraph_line.php');
  require_once ('jpgraph/jpgraph_utils.inc.php');
  
  //
  // Create some random data for the plot. We use the current time for the
  // first X-position
  //
  $f = new FuncGenerator('cos($x)+1.5*cos(2*$x)');
  list($datax,$datay) = $f->E(0,10);
  
  // Now get labels at 1/2 PI intervall
  $tickPositions = array();
  $tickLabels = array();
  $tickPositions[0] = 0;
  $tickLabels[0] = '0';
  for($i=1; $i/2*M_PI < 11 ; ++$i ) {
      $tickPositions[$i] = $i/2*M_PI;
      if( $i % 2 )
  	$tickLabels[$i] = $i.'/2'.SymChar::Get('pi');
      else
  	$tickLabels[$i] = ($i/2).SymChar::Get('pi');
  }
  
  $n = count($datax);
  $xmin = $datax[0];
  $xmax = $datax[$n-1];
  
  //
  // The code to setup a very basic graph
  //
  $graph = new Graph(400,200);
  $graph->clearTheme();
  
  // We use an integer scale on the X-axis since the positions on the X axis
  // are assumed to be UNI timestamps
  $graph->SetScale('linlin',0,0,$xmin,$xmax);
  $graph->title->Set('Example with manual tick labels');
  $graph->title->SetFont(FF_ARIAL,FS_BOLD,12);
  $graph->title->SetColor('white');
  
  // Setup a abackground gradient
  $graph->SetBackgroundGradient('darkred:0.7', 'black', 2, BGRAD_MARGIN);
  $graph->SetPlotGradient('black','darkred:0.8', 2);
  
  // Make sure that the X-axis is always at the bottom of the scale
  // (By default the X-axis is alwys positioned at Y=0 so if the scale
  // doesn't happen to include 0 the axis will not be shown)
  $graph->xaxis->SetPos('min');
  
  // Now set the tic positions
  $graph->xaxis->SetMajTickPositions($tickPositions,$tickLabels);
  
  // Use Times font
  $graph->xaxis->SetFont(FF_TIMES,FS_NORMAL,11);
  $graph->yaxis->SetFont(FF_TIMES,FS_NORMAL,9);
  
  // Set colors for axis
  $graph->xaxis->SetColor('lightgray');
  $graph->yaxis->SetColor('lightgray');
  
  // Add a X-grid
  $graph->xgrid->Show();
  
  // Show ticks outwards
  $graph->xaxis->SetTickSide(SIDE_DOWN);
  $graph->xaxis->SetLabelMargin(8);
  $graph->yaxis->SetTickSide(SIDE_LEFT);
  
  // Setup a filled y-grid
  //$graph->ygrid->SetFill(true,'darkgray:1.55@0.7','darkgray:1.6@0.7');
  $graph->ygrid->SetStyle('dotted');
  $graph->xgrid->SetStyle('dashed');
  
  // Create the plot line
  $p1 = new LinePlot($datay,$datax);
  $p1->SetWeight(2);
  $p1->SetColor('orange:0.9');
  $p1->SetFillColor('white@0.7');
  $graph->Add($p1);
  
  // Output graph
  $graph->Stroke();
  
  ?>