combgraphex1.php

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    <?php // content="text/plain; charset=utf-8"
    require_once ('jpgraph/jpgraph.php');
    require_once ('jpgraph/jpgraph_line.php');
    require_once ('jpgraph/jpgraph_bar.php');
    require_once ('jpgraph/jpgraph_utils.inc.php');
    require_once ('jpgraph/jpgraph_mgraph.php');

    //------------------------------------------------------------------
    // Create some random data for the plot. We use the current time for the
    // first X-position
    //------------------------------------------------------------------
    $datay = array();
    $datax = array();
    $ts = time();
    $n=70; // Number of data points
    for($i=0; $i < $n; ++$i ) {
        $datax[$i] = $ts+$i*150000;
        $datay[$i] = rand(5,60);
        $datay2[$i] = rand(1,8);
    }

    // Now get labels at the start of each month
    $dateUtils = new DateScaleUtils();
    list($tickPositions,$minTickPositions) = $dateUtils->getTicks($datax,DSUTILS_MONTH1);

    // Now create the real graph
    // Combine a line and a bar graph

    // We add some grace to the end of the X-axis scale so that the first and last
    // data point isn't exactly at the very end or beginning of the scale
    $grace = 400000;
    $xmin = $datax[0]-$grace;
    $xmax = $datax[$n-1]+$grace;;

    // Overall width of graphs
    $w = 450;
    // Left and right margin for each graph
    $lm=25; $rm=15;

    //----------------------
    // Setup the line graph
    //----------------------
    $graph = new Graph($w,250);
    $graph->SetScale('linlin',0,0,$xmin,$xmax);
    $graph->SetMargin($lm,$rm,10,30);
    $graph->SetMarginColor('white');
    $graph->SetFrame(false);
    $graph->SetBox(true);
    $graph->title->Set('Example of combined graph');
    $graph->title->SetFont(FF_ARIAL,FS_NORMAL,14);
    $graph->xaxis->SetTickPositions($tickPositions,$minTickPositions);
    $graph->xaxis->SetLabelFormatString('My',true);
    $graph->xgrid->Show();
    $p1 = new LinePlot($datay,$datax);
    $graph->Add($p1);

    //----------------------
    // Setup the bar graph
    //----------------------
    $graph2 = new Graph($w,110);
    $graph2->SetScale('linlin',0,0,$xmin,$xmax);
    $graph2->SetMargin($lm,$rm,5,10);
    $graph2->SetMarginColor('white');
    $graph2->SetFrame(false);
    $graph2->SetBox(true);
    $graph2->xgrid->Show();
    $graph2->xaxis->SetTickPositions($tickPositions,$minTickPositions);
    $graph2->xaxis->SetLabelFormatString('My',true);
    $graph2->xaxis->SetPos('max');
    $graph2->xaxis->HideLabels();
    $graph2->xaxis->SetTickSide(SIDE_DOWN);
    $b1 = new BarPlot($datay2,$datax);
    $b1->SetFillColor('teal');
    $b1->SetColor('teal:1.2');
    $graph2->Add($b1);

    //-----------------------
    // Create a multigraph
    //----------------------
    $mgraph = new MGraph();
    $mgraph->SetMargin(2,2,2,2);
    $mgraph->SetFrame(true,'darkgray',2);
    $mgraph->Add($graph);
    $mgraph->Add($graph2,0,240);
    $mgraph->Stroke();

    ?>