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Graph: ezcGraphBarChart

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Class: ezcGraphBarChart

Class for bar charts. Can make use of an unlimited amount of datasets and will display them as bars by default. [source]
X axis:
  • Labeled axis
  • Boxed axis label renderer
Y axis:
  • Numeric axis
  • Exact axis label renderer
 1.   // Create a new line chart
 2.   $chart new ezcGraphBarChart();
 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'bar_chart.svg' );
Each chart consists of several chart elements which represents logical parts of the chart and can be formatted independently. The bar chart consists of: The type of the axis may be changed and all elements can be configured by accessing them as properties of the chart:
 1.   $chart->legend->position ezcGraph::RIGHT;
The chart itself also offers several options to configure the appearance. As bar charts extend line charts the the extended configure options are available in ezcGraphLineChartOptions extending the ezcGraphChartOptions.

Parents

ezcGraphChart
   |
   --ezcGraphLineChart
      |
      --ezcGraphBarChart

Descendents

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

Properties

ezcGraphLineChartOptions read/write  $options
Chart options class

Inherited Member Variables

From ezcGraphLineChart:
protected  ezcGraphLineChart::$additionalAxis
From ezcGraphChart:
protected  ezcGraphChart::$data
protected  ezcGraphChart::$elements
protected  ezcGraphChart::$options
protected  ezcGraphChart::$properties
protected  ezcGraphChart::$renderElement

Method Summary

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

Inherited Methods

From ezcGraphLineChart :
protected void ezcGraphLineChart::calculateStepWidth()
Calculate bar chart step width
protected void ezcGraphLineChart::checkRenderer()
Check if renderer supports features requested by some special chart options.
public int ezcGraphLineChart::getDefaultDisplayType()
Returns the default display type of the current chart type.
public void ezcGraphLineChart::render()
Render the line chart
protected void ezcGraphLineChart::renderData()
Render the assigned data
protected void ezcGraphLineChart::renderElements()
Renders the basic elements of this chart type
public void ezcGraphLineChart::renderToOutput()
Renders this chart to direct output
protected void ezcGraphLineChart::setAxisValues()
Aggregate and calculate value boundings on axis.
public void ezcGraphLineChart::setFromPalette()
Set colors and border for this element
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 mixed ezcGraphChart::getRenderedFile()
Return filename of rendered file, and false if no file was yet rendered.
public abstract void ezcGraphChart::render()
Renders this chart
public abstract void ezcGraphChart::renderToOutput()
Renders this chart to direct output
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
ezcGraphLineChart::getDefaultDisplayType() Returns the default display type of the current chart type.

Last updated: Mon, 21 Dec 2009