scatter-chart.php
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<?php
/**
* PHP Integration of Open Flash Chart
* Copyright (C) 2008 John Glazebrook <open-flash-chart@teethgrinder.co.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
require_once('OFC/OFC_Chart.php');
$chart = new OFC_Chart();
$title = new OFC_Elements_Title( date("D M d Y") );
$chart->set_title( $title );
$scatter = new OFC_Charts_Scatter( '#FFD600', 10 );
$scatter->set_values(
array(
new OFC_Charts_Scatter_Value( 0, 0 )
)
);
$chart->add_element( $scatter );
//
// plot a circle
//
$s2 = new OFC_Charts_Scatter( '#D600FF', 3 );
$v = array();
for( $i=0; $i<360; $i+=5 )
{
$v[] = new OFC_Charts_Scatter_Value(
number_format(sin(deg2rad($i)), 2, '.', ''),
number_format(cos(deg2rad($i)), 2, '.', '') );
}
$s2->set_values( $v );
$chart->add_element( $s2 );
$x = new OFC_Elements_Axis_X();
$x->set_range( -2, 2 );
$chart->set_x_axis( $x );
$y = new OFC_Elements_Axis_Y();
$y->set_range( -2, 2 );
$chart->add_y_axis( $y );
echo $chart->toPrettyString();