contour2_ex3.php

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    <?php // content="text/plain; charset=utf-8"

    require_once ('jpgraph/jpgraph.php');
    require_once ('jpgraph/jpgraph_contourf.php');

    // Setup some data to use for the contour
    $data = array(
        array (12,12,10,10),
        array (10,10,8,14),
        array (7,7,13,17),
        array (4,5,8,12),
        array (10,8,7,8));

    // create a basic graph as a container
    $graph = new Graph(300,300);
    $graph->SetMargin(30, 30, 40, 30);
    $graph->SetScale('intint');
    $graph->SetMarginColor('white');

    // Setup title of graph
    $graph->title->Set('Filled contour plot');
    $graph->title->SetFont(FF_VERDANA,FS_BOLD,12);

    $graph->subtitle->Set('(Manual colors)');
    $graph->subtitle->SetFont(FF_VERDANA,FS_ITALIC,10);

    // Create a new contour plot with only 3 isobars
    $cp = new FilledContourPlot($data,3);

    // Specify the colors manually
    $isobar_colors = array('lightgray','teal:1.3','orange','red');
    $cp->SetIsobarColors($isobar_colors);

    // Use only blue/red color schema
    $cp->UseHighContrastColor(true);

    // Flip visually
    $cp->SetInvert();

    // Fill the contours
    $cp->SetFilled(true);

    // Display labels
    $cp->ShowLabels(true);

    // No lines
    $cp->ShowLines(false);

    // And add the plot to the graph
    $graph->Add($cp);

    // Send it back to the client
    $graph->stroke();

    ?>