File Source for ScatterPlot.class.php

<?php
/*
* This work is hereby released into the Public Domain.
* To view a copy of the public domain dedication,
* visit http://creativecommons.org/licenses/publicdomain/ or send a letter to
* Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
*
*/
require_once dirname(__FILE__)."/Plot.class.php";
/**
* ScatterPlot
*
* @package linea21.externals
* @subpackage artichow
*/
class awScatterPlot extends awPlot {
/**
* Add marks to the scatter plot
*
* @var Mark
*/
var $mark;
/**
* Labels on the plot
*
* @var Label
*/
var $label;
/**
* Link points ?
*
* @var bool
*/
var $link = FALSE;
/**
* Display impulses
*
* @var bool
*/
var $impulse = NULL;
/**
* Link NULL points ?
*
* @var bool
*/
var $linkNull = FALSE;
/**
* Line color
*
* @var Color
*/
var $lineColor;
/**
* Line type
*
* @var int
*/
var $lineStyle = LINE_SOLID;
/**
* Line thickness
*
* @var int
*/
var $lineThickness = 1;
/**
* Construct a new awScatterPlot
*
* @param array $datay Numeric values for Y axis
* @param array $datax Numeric values for X axis
* @param int $mode
*/
function awScatterPlot($datay, $datax = NULL) {
parent::awPlot();
// Defaults marks
$this->mark = new awMark;
$this->mark->setType(MARK_CIRCLE);
$this->mark->setSize(7);
$this->mark->border->show();
$this->label = new awLabel;
$this->setValues($datay, $datax);
$this->setColor(new awBlack);
}
/**
* Display plot as impulses
*
* @param $impulse Impulses color (or NULL to disable impulses)
*/
function setImpulse($color) {
$this->impulse = $color;
}
/**
* Link scatter plot points
*
* @param bool $link
* @param $color Line color (default to black)
*/
function link($link, $color = NULL) {
$this->link = (bool)$link;
if(is_a($color, 'awColor')) {
$this->setColor($color);
}
}
/**
* Ignore null values for Y data and continue linking
*
* @param bool $link
*/
function linkNull($link) {
$this->linkNull = (bool)$link;
}
/**
* Change line color
*
* @param $color
*/
function setColor($color) {
$this->lineColor = $color;
}
/**
* Change line style
*
* @param int $style
*/
function setStyle($style) {
$this->lineStyle = (int)$style;
}
/**
* Change line tickness
*
* @param int $tickness
*/
function setThickness($tickness) {
$this->lineThickness = (int)$tickness;
}
/**
* Get the line thickness
*
* @return int
*/
function getLegendLineThickness() {
return $this->lineThickness;
}
/**
* Get the line type
*
* @return int
*/
function getLegendLineStyle() {
return $this->lineStyle;
}
/**
* Get the color of line
*
* @return Color
*/
function getLegendLineColor() {
return $this->lineColor;
}
/**
* Get the background color or gradient of an element of the component
*
* @return Color, Gradient
*/
function getLegendBackground() {
return NULL;
}
/**
* Get a mark object
*
* @return Mark
*/
function getLegendMark() {
return $this->mark;
}
function drawComponent($driver, $x1, $y1, $x2, $y2, $aliasing) {
$count = count($this->datay);
// Get start and stop values
list($start, $stop) = $this->getLimit();
// Build the polygon
$polygon = new awPolygon;
for($key = 0; $key < $count; $key++) {
$x = $this->datax[$key];
$y = $this->datay[$key];
if($y !== NULL) {
$p = awAxis::toPosition($this->xAxis, $this->yAxis, new awPoint($x, $y));
$polygon->set($key, $p);
} else if($this->linkNull === FALSE) {
$polygon->set($key, NULL);
}
}
// Link points if needed
if($this->link) {
$prev = NULL;
foreach($polygon->all() as $point) {
if($prev !== NULL and $point !== NULL) {
$driver->line(
$this->lineColor,
new awLine(
$prev,
$point,
$this->lineStyle,
$this->lineThickness
)
);
}
$prev = $point;
}
}
// Draw impulses
if(is_a($this->impulse, 'awColor')) {
foreach($polygon->all() as $key => $point) {
if($point !== NULL) {
$zero = awAxis::toPosition(
$this->xAxis,
$this->yAxis,
new awPoint($key, 0)
);
$driver->line(
$this->impulse,
new awLine(
$zero,
$point,
LINE_SOLID,
1
)
);
}
}
}
// Draw marks and labels
foreach($polygon->all() as $key => $point) {
$this->mark->draw($driver, $point);
$this->label->draw($driver, $point, $key);
}
}
function xAxisPoint($position) {
$y = $this->xAxisZero ? 0 : $this->getRealYMin();
return awAxis::toPosition($this->xAxis, $this->yAxis, new awPoint($position, $y));
}
function getXCenter() {
return FALSE;
}
}
registerClass('ScatterPlot');
?>

Source for file ScatterPlot.class.php