## org.jfree.chart.renderer
Class StackedAreaRenderer

    java.lang.Object
      org.jfree.chart.renderer.AbstractRenderer
          org.jfree.chart.renderer.AbstractCategoryItemRenderer
              org.jfree.chart.renderer.AreaRenderer
                  org.jfree.chart.renderer.StackedAreaRenderer

All Implemented Interfaces:
  CategoryItemRenderer, java.lang.Cloneable, org.jfree.util.PublicCloneable, java.io.Serializable

public class StackedAreaRenderer
extends AreaRenderer
implements java.lang.Cloneable, org.jfree.util.PublicCloneable, java.io.Serializable

A renderer that draws stacked area charts for a `CategoryPlot`.

Author:
  Dan Rivett
See Also:
  Serialized Form

Field Summary

Fields inherited from class org.jfree.chart.renderer.AbstractRenderer
`DEFAULT_OUTLINE_PAINT, DEFAULT_OUTLINE_STROKE, DEFAULT_PAINT, DEFAULT_SHAPE, DEFAULT_STROKE, DEFAULT_VALUE_LABEL_FONT, DEFAULT_VALUE_LABEL_PAINT, ZERO`

Constructor Summary
`StackedAreaRenderer()` Creates a new renderer.

Method Summary
`void` `drawItem(java.awt.Graphics2D g2, CategoryItemRendererState state, java.awt.geom.Rectangle2D dataArea, CategoryPlot plot, CategoryAxis domainAxis, ValueAxis rangeAxis, CategoryDataset dataset, int row, int column)` Draw a single data item.
`protected double` `getPreviousHeight(CategoryDataset data, int series, int category)` Calculates the stacked value of the all series up to, but not including `series` for the specified category, `category`.
`Range` `getRangeExtent(CategoryDataset dataset)` Returns the range of values the renderer requires to display all the items from the specified dataset.

Methods inherited from class org.jfree.chart.renderer.AreaRenderer
`clone, getEndType, setEndType`

Methods inherited from class org.jfree.chart.renderer.AbstractCategoryItemRenderer

`drawBackground, drawDomainGridline, drawItemLabel, drawOutline, drawRangeGridline, drawRangeMarker, equals, getBaseItemURLGenerator, getBaseLabelGenerator, getBaseToolTipGenerator, getColumnCount, getDomainAxis, getDrawingSupplier, getItemURLGenerator, getLabelGenerator, getLegendItem, getPlot, getRangeAxis, getRowCount, getSeriesItemURLGenerator, getSeriesLabelGenerator, getSeriesToolTipGenerator, getToolTipGenerator, getToolTipGenerator, hashCode, initialise, setBaseItemURLGenerator, setBaseLabelGenerator, setBaseToolTipGenerator, setItemURLGenerator, setLabelGenerator, setPlot, setSeriesItemURLGenerator, setSeriesLabelGenerator, setSeriesToolTipGenerator, setToolTipGenerator`

Methods inherited from class org.jfree.chart.renderer.AbstractRenderer

`addChangeListener, calculateLabelAnchorPoint, createTransformedShape, getBaseItemLabelAnchor, getBaseItemLabelAngle, getBaseItemLabelFont, getBaseItemLabelPaint, getBaseItemLabelRotationAnchor, getBaseItemLabelsVisible, getBaseItemLabelTextAnchor, getBaseNegativeItemLabelPosition, getBaseOutlinePaint, getBaseOutlineStroke, getBasePaint, getBasePositiveItemLabelPosition, getBaseShape, getBaseStroke, getItemLabelAnchor, getItemLabelAnchorOffset, getItemLabelAngle, getItemLabelFont, getItemLabelFont, getItemLabelPaint, getItemLabelPaint, getItemLabelRotationAnchor, getItemLabelTextAnchor, getItemOutlinePaint, getItemOutlineStroke, getItemPaint, getItemShape, getItemStroke, getNegativeItemLabelPosition, getNegativeItemLabelPosition, getPositiveItemLabelPosition, getPositiveItemLabelPosition, getSeriesItemLabelAnchor, getSeriesItemLabelAngle, getSeriesItemLabelFont, getSeriesItemLabelPaint, getSeriesItemLabelRotationAnchor, getSeriesItemLabelTextAnchor, getSeriesNegativeItemLabelPosition, getSeriesOutlinePaint, getSeriesOutlineStroke, getSeriesPaint, getSeriesPositiveItemLabelPosition, getSeriesShape, getSeriesStroke, isItemLabelVisible, isSeriesItemLabelsVisible, notifyListeners, removeChangeListener, setBaseAngle, setBaseItemLabelAnchor, setBaseItemLabelFont, setBaseItemLabelFont, setBaseItemLabelPaint, setBaseItemLabelPaint, setBaseItemLabelRotationAnchor, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseItemLabelTextAnchor, setBaseNegativeItemLabelPosition, setBaseNegativeItemLabelPosition, setBaseOutlinePaint, setBaseOutlinePaint, setBaseOutlineStroke, setBaseOutlineStroke, setBasePaint, setBasePaint, setBasePositiveItemLabelPosition, setBasePositiveItemLabelPosition, setBaseShape, setBaseShape, setBaseStroke, setBaseStroke, setItemLabelAnchor, setItemLabelAnchorOffset, setItemLabelAngle, setItemLabelFont, setItemLabelFont, setItemLabelPaint, setItemLabelPaint, setItemLabelRotationAnchor, setItemLabelsVisible, setItemLabelsVisible, setItemLabelsVisible, setItemLabelTextAnchor, setNegativeItemLabelPosition, setNegativeItemLabelPosition, setOutlinePaint, setOutlinePaint, setOutlineStroke, setOutlineStroke, setPaint, setPaint, setPositiveItemLabelPosition, setPositiveItemLabelPosition, setSeriesAngle, setSeriesItemLabelAnchor, setSeriesItemLabelFont, setSeriesItemLabelFont, setSeriesItemLabelPaint, setSeriesItemLabelPaint, setSeriesItemLabelRotationAnchor, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesItemLabelTextAnchor, setSeriesNegativeItemLabelPosition, setSeriesNegativeItemLabelPosition, setSeriesOutlinePaint, setSeriesOutlinePaint, setSeriesOutlineStroke, setSeriesOutlineStroke, setSeriesPaint, setSeriesPaint, setSeriesPositiveItemLabelPosition, setSeriesPositiveItemLabelPosition, setSeriesShape, setSeriesShape, setSeriesStroke, setSeriesStroke, setShape, setShape, setStroke, setStroke`

Methods inherited from class java.lang.Object
`finalize, getClass, notify, notifyAll, toString, wait, wait, wait`

Methods inherited from interface org.jfree.util.PublicCloneable
`clone`

Methods inherited from interface org.jfree.chart.renderer.CategoryItemRenderer

`addChangeListener, getBaseItemLabelAnchor, getBaseItemLabelFont, getBaseItemLabelPaint, getBaseItemLabelsVisible, getBaseItemLabelTextAnchor, getBaseNegativeItemLabelPosition, getBaseOutlinePaint, getBaseOutlineStroke, getBasePaint, getBasePositiveItemLabelPosition, getBaseShape, getBaseStroke, getItemLabelAnchor, getItemLabelFont, getItemLabelFont, getItemLabelPaint, getItemLabelPaint, getItemLabelTextAnchor, getItemOutlinePaint, getItemOutlineStroke, getItemPaint, getItemShape, getItemStroke, getNegativeItemLabelPosition, getNegativeItemLabelPosition, getPositiveItemLabelPosition, getPositiveItemLabelPosition, getSeriesItemLabelAnchor, getSeriesItemLabelFont, getSeriesItemLabelPaint, getSeriesItemLabelTextAnchor, getSeriesNegativeItemLabelPosition, getSeriesOutlinePaint, getSeriesOutlineStroke, getSeriesPaint, getSeriesPositiveItemLabelPosition, getSeriesShape, getSeriesStroke, isItemLabelVisible, isSeriesItemLabelsVisible, removeChangeListener, setBaseItemLabelAnchor, setBaseItemLabelFont, setBaseItemLabelPaint, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseItemLabelsVisible, setBaseItemLabelTextAnchor, setBaseNegativeItemLabelPosition, setBaseNegativeItemLabelPosition, setBaseOutlinePaint, setBaseOutlineStroke, setBasePaint, setBasePositiveItemLabelPosition, setBasePositiveItemLabelPosition, setBaseShape, setBaseStroke, setItemLabelAnchor, setItemLabelFont, setItemLabelPaint, setItemLabelsVisible, setItemLabelsVisible, setItemLabelsVisible, setItemLabelTextAnchor, setNegativeItemLabelPosition, setNegativeItemLabelPosition, setOutlinePaint, setOutlineStroke, setPaint, setPositiveItemLabelPosition, setPositiveItemLabelPosition, setSeriesItemLabelAnchor, setSeriesItemLabelFont, setSeriesItemLabelPaint, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesItemLabelsVisible, setSeriesItemLabelTextAnchor, setSeriesNegativeItemLabelPosition, setSeriesNegativeItemLabelPosition, setSeriesOutlinePaint, setSeriesOutlineStroke, setSeriesPaint, setSeriesPositiveItemLabelPosition, setSeriesPositiveItemLabelPosition, setSeriesShape, setSeriesStroke, setShape, setStroke`

Constructor Detail

### StackedAreaRenderer

    public StackedAreaRenderer()

  Creates a new renderer.

Method Detail

### getRangeExtent

    public Range getRangeExtent(CategoryDataset dataset)

  Returns the range of values the renderer requires to display all the items from the specified dataset.

  Specified by:
    `getRangeExtent` in interface `CategoryItemRenderer`
  Overrides:
    `getRangeExtent` in class `AbstractCategoryItemRenderer`
  Parameters:
    `dataset` - the dataset (`null` permitted).
  Returns:
    The range (or `null` if the dataset is `null` or empty).

### drawItem

    public void drawItem(java.awt.Graphics2D g2,
                         CategoryItemRendererState state,
                         java.awt.geom.Rectangle2D dataArea,
                         CategoryPlot plot,
                         CategoryAxis domainAxis,
                         ValueAxis rangeAxis,
                         CategoryDataset dataset,
                         int row,
                         int column)

  Draw a single data item.

  Specified by:
    `drawItem` in interface `CategoryItemRenderer`
  Overrides:
    `drawItem` in class `AreaRenderer`
  Parameters:
    `g2` - the graphics device.
    `state` - the renderer state.
    `dataArea` - the data plot area.
    `plot` - the plot.
    `domainAxis` - the domain axis.
    `rangeAxis` - the range axis.
    `dataset` - the data.
    `row` - the row index (zero-based).
    `column` - the column index (zero-based).

### getPreviousHeight

    protected double getPreviousHeight(CategoryDataset data,
                                       int series,
                                       int category)

  Calculates the stacked value of the all series up to, but not including `series` for the specified category, `category`. It returns 0.0 if `series` is the first series, i.e. 0.

  Parameters:
    `data` - the data.
    `series` - the series.
    `category` - the category.
  Returns:
    double returns a cumulative value for all series' values up to but excluding `series` for Object `category`.