comb90dategraphex03.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_date.php');
    require_once ('jpgraph/jpgraph_mgraph.php');

    // Setup some fake data to simulate some wind speed and direction

    DEFINE('NDATAPOINTS',280);
    DEFINE('SAMPLERATE',300);

    $start = time();
    $end = $start+NDATAPOINTS*SAMPLERATE;
    $xdata = array();

    $data_winddirection[0] = rand(100,200);
    $data_windspeed[0] = rand(7,10);
    $data_windtemp[0] = rand(5,20);

    for( $i=0; $i < NDATAPOINTS-1; ++$i ) {
        $data_winddirection[$i+1] = $data_winddirection[$i] + rand(-4,4);
        if($data_winddirection[$i+1] < 0 || $data_winddirection[$i+1] > 359)
            $data_winddirection[$i+1] = 0;

        $data_windspeed[$i+1] = $data_windspeed[$i] + rand(-2,2);
        if($data_windspeed[$i+1] < 0 )
            $data_windspeed[$i+1] = 0;

        $data_windtemp[$i+1] = $data_windtemp[$i] + rand(-1.5,1.5);

        $xdata[$i] = $start + $i * SAMPLERATE;
    }
    $xdata[$i] = $start + $i * SAMPLERATE;

    //DEFINE('BKG_COLOR','lightgray:1.7');
    DEFINE('BKG_COLOR','green:1.98');
    DEFINE('WIND_HEIGHT',800);
    DEFINE('WIND_WIDTH',250);

    //------------------------------------------------------------------
    // Setup the Wind direction graph
    //------------------------------------------------------------------
    $graph = new Graph(WIND_WIDTH,WIND_HEIGHT);
    $graph->SetMarginColor(BKG_COLOR);
    $graph->SetScale('datlin',0,360);
    $graph->Set90AndMargin(50,10,70,30);
    $graph->SetFrame(true,'white',0);
    $graph->SetBox();

    $graph->title->Set('Wind direction');
    $graph->title->SetColor('blue');
    $graph->title->SetFont(FF_ARIAL,FS_BOLD,14);
    $graph->title->SetMargin(5);

    $graph->xaxis->SetFont(FF_ARIAL,FS_NORMAL,9);
    $graph->xaxis->scale->SetDateFormat('H:i');
    $graph->xgrid->Show();

    $graph->yaxis->SetLabelAngle(90);
    $graph->yaxis->SetColor('blue');
    $graph->yaxis->SetFont(FF_ARIAL,FS_NORMAL,9);
    $graph->yaxis->SetLabelMargin(0);
    $graph->yaxis->scale->SetAutoMin(0);

    $line = new LinePlot($data_winddirection,$xdata);
    $line->SetStepStyle();
    $line->SetColor('blue');

    $graph->Add($line);

    //------------------------------------------------------------------
    // Setup the wind speed graph
    //------------------------------------------------------------------
    $graph2 = new Graph(WIND_WIDTH-30,WIND_HEIGHT);
    $graph2->SetScale('datlin');
    $graph2->Set90AndMargin(5,20,70,30);
    $graph2->SetMarginColor(BKG_COLOR);
    $graph2->SetFrame(true,'white',0);
    $graph2->SetBox();

    $graph2->title->Set('Windspeed');
    $graph2->title->SetColor('red');
    $graph2->title->SetFont(FF_ARIAL,FS_BOLD,14);
    $graph2->title->SetMargin(5);

    $graph2->xaxis->HideLabels();
    $graph2->xgrid->Show();

    $graph2->yaxis->SetLabelAngle(90);
    $graph2->yaxis->SetColor('red');
    $graph2->yaxis->SetFont(FF_ARIAL,FS_NORMAL,9);
    $graph2->yaxis->SetLabelMargin(0);
    $graph2->yaxis->scale->SetAutoMin(0);

    $line2 = new LinePlot($data_windspeed,$xdata);
    $line2->SetStepStyle();
    $line2->SetColor('red');

    $graph2->Add($line2);

    //------------------------------------------------------------------
    // Setup the wind temp graph
    //------------------------------------------------------------------
    $graph3 = new Graph(WIND_WIDTH-30,WIND_HEIGHT);
    $graph3->SetScale('datlin');
    $graph3->Set90AndMargin(5,20,70,30);
    $graph3->SetMarginColor(BKG_COLOR);
    $graph3->SetFrame(true,'white',0);
    $graph3->SetBox();

    $graph3->title->Set('Temperature');
    $graph3->title->SetColor('black');
    $graph3->title->SetFont(FF_ARIAL,FS_BOLD,14);
    $graph3->title->SetMargin(5);

    $graph3->xaxis->HideLabels();
    $graph3->xgrid->Show();

    $graph3->yaxis->SetLabelAngle(90);
    $graph3->yaxis->SetColor('black');
    $graph3->yaxis->SetFont(FF_ARIAL,FS_NORMAL,9);
    $graph3->yaxis->SetLabelMargin(0);
    $graph3->yaxis->scale->SetAutoMin(-10);

    $line3 = new LinePlot($data_windtemp,$xdata);
    $line3->SetStepStyle();
    $line3->SetColor('black');

    $graph3->Add($line3);

    //-----------------------
    // Create a multigraph
    //----------------------
    $mgraph = new MGraph();
    $mgraph->SetMargin(2,2,2,2);
    $mgraph->SetFrame(true,'darkgray',2);
    $mgraph->SetFillColor(BKG_COLOR);
    $mgraph->Add($graph,0,50);
    $mgraph->Add($graph2,250,50);
    $mgraph->Add($graph3,460,50);
    $mgraph->title->Set('Climate diagram 12 March 2009');
    $mgraph->title->SetFont(FF_ARIAL,FS_BOLD,20);
    $mgraph->title->SetMargin(8);
    $mgraph->Stroke();

    ?>