Package weka.gui.beans

Class WekaOffscreenChartRenderer

java.lang.Object
weka.gui.beans.AbstractOffscreenChartRenderer
weka.gui.beans.WekaOffscreenChartRenderer
All Implemented Interfaces:
OffscreenChartRenderer
public class WekaOffscreenChartRenderer extends AbstractOffscreenChartRenderer
Default OffscreenChartRenderer that uses Weka's built-in chart and graph classes.
Version:
$Revision: 8034 $
Author:
Mark Hall (mhall{[at]}pentaho{[dot]}com)

  • Constructor Details

    • WekaOffscreenChartRenderer

      public WekaOffscreenChartRenderer()

  • Method Details

    • rendererName

      public String rendererName()
      The name of this off screen renderer
      Returns:
      the name of this off screen renderer

    • optionsTipTextHTML

      public String optionsTipTextHTML()
      Gets a short list of additional options (if any), suitable for displaying in a tip text, in HTML form
      Specified by:
      optionsTipTextHTML in interface OffscreenChartRenderer
      Overrides:
      optionsTipTextHTML in class AbstractOffscreenChartRenderer
      Returns:
      additional options description in simple HTML form

    • renderXYLineChart

      public BufferedImage renderXYLineChart(int width, int height, List<Instances> series, String xAxis, String yAxis, List<String> optionalArgs) throws Exception
      Render an XY line chart
      Parameters:
      width - the width of the resulting chart in pixels
      height - the height of the resulting chart in pixels
      series - a list of Instances - one for each series to be plotted
      xAxis - the name of the attribute for the x-axis (all series Instances are expected to have an attribute of the same type with this name)
      yAxis - the name of the attribute for the y-axis (all series Instances are expected to have an attribute of the same type with this name)
      optionalArgs - optional arguments to the renderer (may be null)
      Returns:
      a BufferedImage containing the chart
      Throws:
      Exception - if there is a problem rendering the chart

    • renderXYScatterPlot

      public BufferedImage renderXYScatterPlot(int width, int height, List<Instances> series, String xAxis, String yAxis, List<String> optionalArgs) throws Exception
      Render an XY scatter plot
      Parameters:
      width - the width of the resulting chart in pixels
      height - the height of the resulting chart in pixels
      series - a list of Instances - one for each series to be plotted
      xAxis - the name of the attribute for the x-axis (all series Instances are expected to have an attribute of the same type with this name)
      yAxis - the name of the attribute for the y-axis (all series Instances are expected to have an attribute of the same type with this name)
      optionalArgs - optional arguments to the renderer (may be null)
      Returns:
      a BufferedImage containing the chart
      Throws:
      Exception - if there is a problem rendering the chart

    • renderHistogram

      public BufferedImage renderHistogram(int width, int height, List<Instances> series, String attToPlot, List<String> optionalArgs) throws Exception
      Render histogram(s) (numeric attribute) or pie chart (nominal attribute). Some implementations may not be able to render more than one histogram/pie on the same chart - the implementation can either throw an exception or just process the first series in this case. This Default implementation uses Weka's built in VisualizeAttributePanel to render with and, as such, can only render histograms. It produces histograms for both numeric and nominal attributes.
      Parameters:
      width - the width of the resulting chart in pixels
      height - the height of the resulting chart in pixels
      series - a list of Instances - one for each series to be plotted
      attsToPlot - the attribute to plot corresponding to the Instances in the series list
      optionalArgs - optional arguments to the renderer (may be null)
      Returns:
      a BufferedImage containing the chart
      Throws:
      Exception - if there is a problem rendering the chart