<?php
require_once("../lib/phpchartdir.php");

# The data for the chart
$dataY0 = array(4, 4.5, 5, 5.25, 5.75, 5.25, 5, 4.5, 4, 3, 2.5, 2.5);
$dataX0 = array(chartTime(1997, 1, 1), chartTime(1998, 6, 25), chartTime(1999, 9, 6),
    chartTime(2000, 2, 6), chartTime(2000, 9, 21), chartTime(2001, 3, 4), chartTime(
    2001, 6, 8), chartTime(2002, 2, 4), chartTime(2002, 5, 19), chartTime(2002, 8, 16
    ), chartTime(2002, 12, 1), chartTime(2003, 1, 1));

$dataY1 = array(7, 6.5, 6, 5, 6.5, 7, 6, 5.5, 5, 4, 3.5, 3.5);
$dataX1 = array(chartTime(1997, 1, 1), chartTime(1997, 7, 1), chartTime(1997, 12, 1),
    chartTime(1999, 1, 15), chartTime(1999, 6, 9), chartTime(2000, 3, 3), chartTime(
    2000, 8, 13), chartTime(2001, 5, 5), chartTime(2001, 9, 16), chartTime(2002, 3,
    16), chartTime(2002, 6, 1), chartTime(2003, 1, 1));

# Create a XYChart object of size 500 x 270 pixels, with a pale blue (e0e0ff)
# background, black border, 1 pixel 3D border effect and rounded corners
$c = new XYChart(600, 300, 0xe0e0ff, 0x000000, 1);
$c->setRoundedFrame();

# Set the plotarea at (55, 60) and of size 520 x 200 pixels, with white (ffffff)
# background. Set horizontal and vertical grid lines to grey (cccccc).
$c->setPlotArea(50, 60, 525, 200, 0xffffff, -1, -1, 0xcccccc, 0xcccccc);

# Add a legend box at (55, 32) (top of the chart) with horizontal layout. Use 9 pts
# Arial Bold font. Set the background and border color to Transparent.
$legendObj = $c->addLegend(55, 32, false, "arialbd.ttf", 9);
$legendObj->setBackground(Transparent);

# Add a title box to the chart using 15 pts Times Bold Italic font. The text is white
# (ffffff) on a deep blue (000088) background, with soft lighting effect from the
# right side.
$textBoxObj = $c->addTitle("Long Term Interest Rates", "timesbi.ttf", 15, 0xffffff);
$textBoxObj->setBackground(0x000088, -1, softLighting(Right));

# Set the y axis label format to display a percentage sign
$c->yAxis->setLabelFormat("{value}%");

# Add a red (ff0000) step line layer to the chart and set the line width to 2 pixels
$layer0 = $c->addStepLineLayer($dataY0, 0xff0000, "Country AAA");
$layer0->setXData($dataX0);
$layer0->setLineWidth(2);

# Add a blue (0000ff) step line layer to the chart and set the line width to 2 pixels
$layer1 = $c->addStepLineLayer($dataY1, 0x0000ff, "Country BBB");
$layer1->setXData($dataX1);
$layer1->setLineWidth(2);

# output the chart
header("Content-type: image/png");
print($c->makeChart2(PNG));
?>