function draw_graph($type, $settings = array(), $values = array(), $colors = array(), $links = array(), $h = 300, $w = 200)
{
$g = new SVGGraph($w, $h, $settings);
$g->Values($values);
$g->Colours($colors);
$g->Links($links);
$img = $g->Fetch($type);
return $img;
}
/**
* Creates the pie circle as an SVG image using SVGGraph, then imports it
* into the pdf using TCPDF.
* <p>
* The x/y define the origin of where to begin drawing the svg graphic;
* this is the upper left corner of image.
* <p>
* To draw the svg graphic this method calls SVGGraph->Fetch
* <p>
* To import the svg graphic into the pdf this method calls TCPDF->ImageSVG
* <p>
* ImageSVG params:
* $file, $x='', $y='', $w=0, $h=0, $link='', $align='', $palign='',
* $border=0, $fitonpage=false
*
* @param float $curX the x position
* @param float $curY the y position
*/
public function drawPie($curX, $curY)
{
// process the values and colors, to deal with a bug in SVGGraph where a value of 0
// doesn't use a color from the list, which would cause the slices to not be the correct color
$values = $this->pieWedgeValues;
$colors = $this->getGraphColorsText();
self::fixGraphValuesAndColors($values, $colors);
/*
Create the pie as a circle in an SVG image; width in pixels, height in pixels, settings.
If aspect_raitio is 1.0, the smallest value controls the size; HOWEVER, the svg image itself
is rectilinear (give it a border and this becomes visible) and will be what height and width
you set it to, such as 100 x 200.
*/
$graph = new SVGGraph($this->svgGraphicWidth, $this->svgGraphicHeight, $this->svgGraphSettings);
$graph->Values($values);
$graph->Colours($colors);
$svg = $graph->Fetch('PieGraph');
// This imports the svg into the PDF.
$this->pdf->ImageSVG('@' . $svg, $curX, $curY, 0, 0, '', '', '', $this->imageSvgBorder);
}
