Charts - Scatter charts - Scatter Line Chart
Documentation: scatter_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",
"600", "400", "9.0.0", "expressInstall.swf",
{"data-file":"gallery/scatter-line-chart.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/scatter-line-chart.php
<?php
include '../php-ofc-library/open-flash-chart.php';
$chart = new open_flash_chart();
$title = new title( date("D M d Y") );
$chart->set_title( $title );
$s = new scatter_line( '#DB1750', 3 );
$def = new hollow_dot();
$def->size(3)->halo_size(2);
$s->set_default_dot_style( $def );
$v = array();
$x = 0.0;
$y = 0;
do
{
$v[] = new scatter_value( $x, $y );
// move up or down in Y axis:
$y += rand(-20, 20)/10;
if( $y > 10 )
$y = 10;
if( $y < -10 )
$y = -10;
$x += rand(5, 15)/10;
}
while( $x < 25 );
$s->set_values( $v );
$chart->add_element( $s );
$x = new x_axis();
$x->set_range( 0, 25 );
$chart->set_x_axis( $x );
$y = new x_axis();
$y->set_range( -10, 10 );
$chart->add_y_axis( $y );
echo $chart->toPrettyString();
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