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Make an area chart.
Note to self: I must write a tutorial on how to use point objects
Documentation: area_hollow,
inherits from area_line.
This goes into the <head> of the page:
<script type="text/javascript" src="js/swfobject.js"></script>
<script type="text/javascript">
swfobject.embedSWF(
"open-flash-chart.swf", "my_chart",
"550", "400", "9.0.0", "expressInstall.swf",
{"data-file":"gallery/area-hollow.php"} );
</script>
This writes the chart into a div with id="my_chart",
right click and view source to see it in action,
[the tutorials have more details]
gallery/area-hollow.php
<?php
$data = array();
for( $i=0; $i<6.2; $i+=0.2 )
{
$tmp = sin($i) * 1.9;
$data[] = $tmp;
}
include '../php-ofc-library/open-flash-chart.php';
$chart = new open_flash_chart();
$chart->set_title( new title( 'Area Chart' ) );
//
// Make our area chart:
//
$area = new area();
// set the circle line width:
$area->set_width( 2 );
$area->set_default_dot_style( new hollow_dot() );
$area->set_colour( '#838A96' );
$area->set_fill_colour( '#E01B49' );
$area->set_fill_alpha( 0.4 );
$area->set_values( $data );
// add the area object to the chart:
$chart->add_element( $area );
$y_axis = new y_axis();
$y_axis->set_range( -2, 2, 2 );
$y_axis->labels = null;
$y_axis->set_offset( false );
$x_axis = new x_axis();
$x_axis->labels = $data;
$x_axis->set_steps( 2 );
$x_labels = new x_axis_labels();
$x_labels->set_steps( 4 );
$x_labels->set_vertical();
// Add the X Axis Labels to the X Axis
$x_axis->set_labels( $x_labels );
$chart->add_y_axis( $y_axis );
$chart->x_axis = $x_axis;
echo $chart->toPrettyString();
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