Subversion Repositories cheapmusic

<?php

# PHPlot / contrib / color_range : Example

# $Id: color_range.example.php 449 2009-12-09 03:45:45Z lbayuk $

# This is a bar chart with a color gradient for the bars in each group.

require_once 'phplot.php';

require_once 'color_range.php';

$bars_per_group = 10;

$x_values = 4;

mt_srand(1);

$data = array();

for ($i = 0; $i < $x_values; $i++) {

    $row = array($i);

    for ($j = 0; $j < $bars_per_group; $j++) $row[] = mt_rand(0, 100);

    $data[] = $row;

}

$p = new PHPlot(800, 600);

$p->SetTitle('Example - Bar Chart with gradient colors');

$p->SetDataType('text-data');

$p->SetDataValues($data);

$p->SetPlotAreaWorld(0, 0, $x_values, 100);

# This isn't necessary, as we do know how many data sets (bars_per_group):

$n_data = count_data_sets($data, 'text-data');

# Make a gradient color map:

$colors = color_range($p->SetRGBColor('SkyBlue'),

                      $p->SetRGBColor('DarkGreen'), $n_data);

$p->SetDataColors($colors);

$p->SetXTickLabelPos('none');

$p->SetXTickPos('none');

$p->SetPlotType('bars');

$p->DrawGraph();