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eZ Components 2006.2

Graph: ezcGraphLineChart

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Class: ezcGraphLineChart

Class for line charts. Can make use of an unlimited amount of datasets and will display them as lines by default. [source]
X axis:
  • Labeled axis
  • Centered axis label renderer
Y axis:
  • Numeric axis
  • Exact axis label renderer
 1.   // Create a new line chart
 2.     $chart new ezcGraphLineChart();
 3.  
 4.   // Add data to line chart
 5.     $chart->data['sample dataset'new ezcGraphArrayDataSet(
 6.       array(
 7.           '100' => 1.2,
 8.           '200' => 43.2,
 9.           '300' => -34.14,
10.           '350' => 65,
11.           '400' => 123,
12.       )
13.   );
14.  
15.   // Render chart with default 2d renderer and default SVG driver
16.     $chart->render500200'line_chart.svg' );

Parents

ezcGraphChart
   |
   --ezcGraphLineChart

Descendents

Child Class Description
ezcGraphBarChart Class for bar charts. Can make use of an unlimited amount of datasets and will display them as bars by default.

Inherited Member Variables

From ezcGraphChart:
protected  ezcGraphChart::$data
protected  ezcGraphChart::$driver
protected  ezcGraphChart::$elements
protected  ezcGraphChart::$options
protected  ezcGraphChart::$palette
protected  ezcGraphChart::$renderElement
protected  ezcGraphChart::$renderer

Method Summary

public int getDefaultDisplayType( )
Returns the default display type of the current chart type.
public void render( $width, $height, [$file = null] )
Render the line chart
protected void renderData( $renderer, $boundings )
Render the assigned data

Inherited Methods

From ezcGraphChart :
protected void ezcGraphChart::addElement()
Add element to chart
public abstract int ezcGraphChart::getDefaultDisplayType()
Returns the default display type of the current chart type.
public abstract void ezcGraphChart::render()
Renders this chart
public void ezcGraphChart::setFromPalette()
Set colors and border fro this element

Methods

getDefaultDisplayType

int getDefaultDisplayType( )
Returns the default display type of the current chart type.

Redefinition of

Method Description
ezcGraphChart::getDefaultDisplayType() Returns the default display type of the current chart type.

Redefined in descendants as

Method Description
ezcGraphBarChart::getDefaultDisplayType() Returns the default display type of the current chart type.

render

void render( int $width, int $height, [string $file = null] )
Render the line chart
Renders the chart into a file or stream. The width and height are needed to specify the dimensions of the resulting image. For direct output use 'php://stdout' as output file.

Parameters

Name Type Description
$width int Image width
$height int Image height
$file string Output file

Redefinition of

Method Description
ezcGraphChart::render() Renders this chart

renderData

void renderData( ezcGraphRenderer $renderer, $boundings )
Render the assigned data
Will renderer all charts data in the remaining boundings after drawing all other chart elements. The data will be rendered depending on the settings in the dataset.

Parameters

Name Type Description
$renderer ezcGraphRenderer Renderer
$boundings ezcGraphBoundings Remaining boundings

Last updated: Thu, 01 Nov 2007