Module platform
Package org.jfree.chart.plot

Class SpiderWebPlot

java.lang.Object
org.jfree.chart.plot.Plot
org.jfree.chart.plot.SpiderWebPlot
All Implemented Interfaces:
Disposable, Serializable, Cloneable, EventListener, AnnotationChangeListener, AxisChangeListener, MarkerChangeListener, LegendItemSource, PublicCloneable, DatasetChangeListener
public class SpiderWebPlot extends Plot implements Cloneable, Serializable
A plot that displays data from a CategoryDataset in the form of a "spider web". Multiple series can be plotted on the same axis to allow easy comparison. This plot doesn't support negative values at present.
See Also:

  • Field Details

    • DEFAULT_HEAD

      public static final double DEFAULT_HEAD
      The default head radius percent (currently 1%).
      See Also:

    • DEFAULT_AXIS_LABEL_GAP

      public static final double DEFAULT_AXIS_LABEL_GAP
      The default axis label gap (currently 10%).
      See Also:

    • DEFAULT_INTERIOR_GAP

      public static final double DEFAULT_INTERIOR_GAP
      The default interior gap.
      See Also:

    • MAX_INTERIOR_GAP

      public static final double MAX_INTERIOR_GAP
      The maximum interior gap (currently 40%).
      See Also:

    • DEFAULT_START_ANGLE

      public static final double DEFAULT_START_ANGLE
      The default starting angle for the radar chart axes.
      See Also:

    • DEFAULT_LABEL_FONT

      public static final Font DEFAULT_LABEL_FONT
      The default series label font.

    • DEFAULT_LABEL_PAINT

      public static final Paint DEFAULT_LABEL_PAINT
      The default series label paint.

    • DEFAULT_LABEL_BACKGROUND_PAINT

      public static final Paint DEFAULT_LABEL_BACKGROUND_PAINT
      The default series label background paint.

    • DEFAULT_LABEL_OUTLINE_PAINT

      public static final Paint DEFAULT_LABEL_OUTLINE_PAINT
      The default series label outline paint.

    • DEFAULT_LABEL_OUTLINE_STROKE

      public static final Stroke DEFAULT_LABEL_OUTLINE_STROKE
      The default series label outline stroke.

    • DEFAULT_LABEL_SHADOW_PAINT

      public static final Paint DEFAULT_LABEL_SHADOW_PAINT
      The default series label shadow paint.

    • DEFAULT_MAX_VALUE

      public static final double DEFAULT_MAX_VALUE
      The default maximum value plotted - forces the plot to evaluate the maximum from the data passed in
      See Also:

    • headPercent

      protected double headPercent
      The head radius as a percentage of the available drawing area.

  • Constructor Details

    • SpiderWebPlot

      public SpiderWebPlot()
      Creates a default plot with no dataset.

    • SpiderWebPlot

      public SpiderWebPlot(CategoryDataset dataset)
      Creates a new spider web plot with the given dataset, with each row representing a series.
      Parameters:
      dataset - the dataset (null permitted).

    • SpiderWebPlot

      public SpiderWebPlot(CategoryDataset dataset, TableOrder extract)
      Creates a new spider web plot with the given dataset.
      Parameters:
      dataset - the dataset.
      extract - controls how data is extracted (TableOrder.BY_ROW or TableOrder.BY_COLUMN).

  • Method Details

    • getPlotType

      public String getPlotType()
      Returns a short string describing the type of plot.
      Specified by:
      getPlotType in class Plot
      Returns:
      The plot type.

    • getDataset

      public CategoryDataset getDataset()
      Returns the dataset.
      Returns:
      The dataset (possibly null).
      See Also:

    • setDataset

      public void setDataset(CategoryDataset dataset)
      Sets the dataset used by the plot and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      dataset - the dataset (null permitted).
      See Also:

    • isWebFilled

      public boolean isWebFilled()
      Method to determine if the web chart is to be filled.
      Returns:
      A boolean.
      See Also:

    • setWebFilled

      public void setWebFilled(boolean flag)
      Sets the webFilled flag and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      flag - the flag.
      See Also:

    • getDataExtractOrder

      public TableOrder getDataExtractOrder()
      Returns the data extract order (by row or by column).
      Returns:
      The data extract order (never null).
      See Also:

    • setDataExtractOrder

      public void setDataExtractOrder(TableOrder order)
      Sets the data extract order (by row or by column) and sends a PlotChangeEventto all registered listeners.
      Parameters:
      order - the order (null not permitted).
      Throws:
      IllegalArgumentException - if order is null.
      See Also:

    • getHeadPercent

      public double getHeadPercent()
      Returns the head percent (the default value is 0.01).
      Returns:
      The head percent (always > 0).
      See Also:

    • setHeadPercent

      public void setHeadPercent(double percent)
      Sets the head percent and sends a PlotChangeEvent to all registered listeners. Note that 0.10 is 10 percent.
      Parameters:
      percent - the percent (must be greater than zero).
      See Also:

    • getStartAngle

      public double getStartAngle()
      Returns the start angle for the first radar axis.
      This is measured in degrees starting from 3 o'clock (Java Arc2D default) and measuring anti-clockwise.
      Returns:
      The start angle.
      See Also:

    • setStartAngle

      public void setStartAngle(double angle)
      Sets the starting angle and sends a PlotChangeEvent to all registered listeners.

      The initial default value is 90 degrees, which corresponds to 12 o'clock. A value of zero corresponds to 3 o'clock... this is the encoding used by Java's Arc2D class.

      Parameters:
      angle - the angle (in degrees).
      See Also:

    • getMaxValue

      public double getMaxValue()
      Returns the maximum value any category axis can take.
      Returns:
      The maximum value.
      See Also:

    • setMaxValue

      public void setMaxValue(double value)
      Sets the maximum value any category axis can take and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      value - the maximum value.
      See Also:

    • getDirection

      public Rotation getDirection()
      Returns the direction in which the radar axes are drawn (clockwise or anti-clockwise).
      Returns:
      The direction (never null).
      See Also:

    • setDirection

      public void setDirection(Rotation direction)
      Sets the direction in which the radar axes are drawn and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      direction - the direction (null not permitted).
      See Also:

    • getInteriorGap

      public double getInteriorGap()
      Returns the interior gap, measured as a percentage of the available drawing space.
      Returns:
      The gap (as a percentage of the available drawing space).
      See Also:

    • setInteriorGap

      public void setInteriorGap(double percent)
      Sets the interior gap and sends a PlotChangeEvent to all registered listeners. This controls the space between the edges of the plot and the plot area itself (the region where the axis labels appear).
      Parameters:
      percent - the gap (as a percentage of the available drawing space).
      See Also:

    • getAxisLabelGap

      public double getAxisLabelGap()
      Returns the axis label gap.
      Returns:
      The axis label gap.
      See Also:

    • setAxisLabelGap

      public void setAxisLabelGap(double gap)
      Sets the axis label gap and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      gap - the gap.
      See Also:

    • getAxisLinePaint

      public Paint getAxisLinePaint()
      Returns the paint used to draw the axis lines.
      Returns:
      The paint used to draw the axis lines (never null).
      See Also:

    • setAxisLinePaint

      public void setAxisLinePaint(Paint paint)
      Sets the paint used to draw the axis lines and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      paint - the paint (null not permitted).
      See Also:

    • getAxisLineStroke

      public Stroke getAxisLineStroke()
      Returns the stroke used to draw the axis lines.
      Returns:
      The stroke used to draw the axis lines (never null).
      See Also:

    • setAxisLineStroke

      public void setAxisLineStroke(Stroke stroke)
      Sets the stroke used to draw the axis lines and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      stroke - the stroke (null not permitted).
      See Also:

    • getSeriesPaint

      public Paint getSeriesPaint()
      Returns the paint for ALL series in the plot.
      Returns:
      The paint (possibly null).
      See Also:

    • setSeriesPaint

      public void setSeriesPaint(Paint paint)
      Sets the paint for ALL series in the plot. If this is set to null, then a list of paints is used instead (to allow different colors to be used for each series of the radar group).
      Parameters:
      paint - the paint (null permitted).
      See Also:

    • getSeriesPaint

      public Paint getSeriesPaint(int series)
      Returns the paint for the specified series.
      Parameters:
      series - the series index (zero-based).
      Returns:
      The paint (never null).
      See Also:

    • setSeriesPaint

      public void setSeriesPaint(int series, Paint paint)
      Sets the paint used to fill a series of the radar and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      series - the series index (zero-based).
      paint - the paint (null permitted).
      See Also:

    • getBaseSeriesPaint

      public Paint getBaseSeriesPaint()
      Returns the base series paint. This is used when no other paint is available.
      Returns:
      The paint (never null).
      See Also:

    • setBaseSeriesPaint

      public void setBaseSeriesPaint(Paint paint)
      Sets the base series paint.
      Parameters:
      paint - the paint (null not permitted).
      See Also:

    • getSeriesOutlinePaint

      public Paint getSeriesOutlinePaint()
      Returns the outline paint for ALL series in the plot.
      Returns:
      The paint (possibly null).

    • setSeriesOutlinePaint

      public void setSeriesOutlinePaint(Paint paint)
      Sets the outline paint for ALL series in the plot. If this is set to null, then a list of paints is used instead (to allow different colors to be used for each series).
      Parameters:
      paint - the paint (null permitted).

    • getSeriesOutlinePaint

      public Paint getSeriesOutlinePaint(int series)
      Returns the paint for the specified series.
      Parameters:
      series - the series index (zero-based).
      Returns:
      The paint (never null).

    • setSeriesOutlinePaint

      public void setSeriesOutlinePaint(int series, Paint paint)
      Sets the paint used to fill a series of the radar and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      series - the series index (zero-based).
      paint - the paint (null permitted).

    • getBaseSeriesOutlinePaint

      public Paint getBaseSeriesOutlinePaint()
      Returns the base series paint. This is used when no other paint is available.
      Returns:
      The paint (never null).

    • setBaseSeriesOutlinePaint

      public void setBaseSeriesOutlinePaint(Paint paint)
      Sets the base series paint.
      Parameters:
      paint - the paint (null not permitted).

    • getSeriesOutlineStroke

      public Stroke getSeriesOutlineStroke()
      Returns the outline stroke for ALL series in the plot.
      Returns:
      The stroke (possibly null).

    • setSeriesOutlineStroke

      public void setSeriesOutlineStroke(Stroke stroke)
      Sets the outline stroke for ALL series in the plot. If this is set to null, then a list of paints is used instead (to allow different colors to be used for each series).
      Parameters:
      stroke - the stroke (null permitted).

    • getSeriesOutlineStroke

      public Stroke getSeriesOutlineStroke(int series)
      Returns the stroke for the specified series.
      Parameters:
      series - the series index (zero-based).
      Returns:
      The stroke (never null).

    • setSeriesOutlineStroke

      public void setSeriesOutlineStroke(int series, Stroke stroke)
      Sets the stroke used to fill a series of the radar and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      series - the series index (zero-based).
      stroke - the stroke (null permitted).

    • getBaseSeriesOutlineStroke

      public Stroke getBaseSeriesOutlineStroke()
      Returns the base series stroke. This is used when no other stroke is available.
      Returns:
      The stroke (never null).

    • setBaseSeriesOutlineStroke

      public void setBaseSeriesOutlineStroke(Stroke stroke)
      Sets the base series stroke.
      Parameters:
      stroke - the stroke (null not permitted).

    • getLegendItemShape

      public Shape getLegendItemShape()
      Returns the shape used for legend items.
      Returns:
      The shape (never null).
      See Also:

    • setLegendItemShape

      public void setLegendItemShape(Shape shape)
      Sets the shape used for legend items and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      shape - the shape (null not permitted).
      See Also:

    • getLabelFont

      public Font getLabelFont()
      Returns the series label font.
      Returns:
      The font (never null).
      See Also:

    • setLabelFont

      public void setLabelFont(Font font)
      Sets the series label font and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      font - the font (null not permitted).
      See Also:

    • getLabelPaint

      public Paint getLabelPaint()
      Returns the series label paint.
      Returns:
      The paint (never null).
      See Also:

    • setLabelPaint

      public void setLabelPaint(Paint paint)
      Sets the series label paint and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      paint - the paint (null not permitted).
      See Also:

    • getLabelGenerator

      public CategoryItemLabelGenerator getLabelGenerator()
      Returns the label generator.
      Returns:
      The label generator (never null).
      See Also:

    • setLabelGenerator

      public void setLabelGenerator(CategoryItemLabelGenerator generator)
      Sets the label generator and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      generator - the generator (null not permitted).
      See Also:

    • getToolTipGenerator

      public CategoryToolTipGenerator getToolTipGenerator()
      Returns the tool tip generator for the plot.
      Returns:
      The tool tip generator (possibly null).
      See Also:

    • setToolTipGenerator

      public void setToolTipGenerator(CategoryToolTipGenerator generator)
      Sets the tool tip generator for the plot and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      generator - the generator (null permitted).
      See Also:

    • getURLGenerator

      public CategoryURLGenerator getURLGenerator()
      Returns the URL generator for the plot.
      Returns:
      The URL generator (possibly null).
      See Also:

    • setURLGenerator

      public void setURLGenerator(CategoryURLGenerator generator)
      Sets the URL generator for the plot and sends a PlotChangeEvent to all registered listeners.
      Parameters:
      generator - the generator (null permitted).
      See Also:

    • getLegendItems

      public LegendItemCollection getLegendItems()
      Returns a collection of legend items for the spider web chart.
      Specified by:
      getLegendItems in interface LegendItemSource
      Overrides:
      getLegendItems in class Plot
      Returns:
      The legend items (never null).

    • getWebPoint

      protected Point2D getWebPoint(Rectangle2D bounds, double angle, double length)
      Returns a cartesian point from a polar angle, length and bounding box
      Parameters:
      bounds - the area inside which the point needs to be.
      angle - the polar angle, in degrees.
      length - the relative length. Given in percent of maximum extend.
      Returns:
      The cartesian point.

    • draw

      public void draw(Graphics2D g2, Rectangle2D area, Point2D anchor, PlotState parentState, PlotRenderingInfo info)
      Draws the plot on a Java 2D graphics device (such as the screen or a printer).
      Specified by:
      draw in class Plot
      Parameters:
      g2 - the graphics device.
      area - the area within which the plot should be drawn.
      anchor - the anchor point (null permitted).
      parentState - the state from the parent plot, if there is one.
      info - collects info about the drawing.

    • drawRadarPoly

      protected void drawRadarPoly(Graphics2D g2, Rectangle2D plotArea, Point2D centre, PlotRenderingInfo info, int series, int catCount, double headH, double headW)
      Draws a radar plot polygon.
      Parameters:
      g2 - the graphics device.
      plotArea - the area we are plotting in (already adjusted).
      centre - the centre point of the radar axes
      info - chart rendering info.
      series - the series within the dataset we are plotting
      catCount - the number of categories per radar plot
      headH - the data point height
      headW - the data point width

    • getPlotValue

      protected Number getPlotValue(int series, int cat)
      Returns the value to be plotted at the intersection of the series and the category. This allows us to plot BY_ROW or BY_COLUMN which basically is just reversing the definition of the categories and data series being plotted.
      Parameters:
      series - the series to be plotted.
      cat - the category within the series to be plotted.
      Returns:
      The value to be plotted (possibly null).
      See Also:

    • drawLabel

      protected void drawLabel(Graphics2D g2, Rectangle2D plotArea, double value, int cat, double startAngle, double extent)
      Draws the label for one axis.
      Parameters:
      g2 - the graphics device.
      plotArea - the plot area
      value - the value of the label (ignored).
      cat - the category (zero-based index).
      startAngle - the starting angle.
      extent - the extent of the arc.

    • calculateLabelLocation

      protected Point2D calculateLabelLocation(Rectangle2D labelBounds, double ascent, Rectangle2D plotArea, double startAngle)
      Returns the location for a label
      Parameters:
      labelBounds - the label bounds.
      ascent - the ascent (height of font).
      plotArea - the plot area
      startAngle - the start angle for the pie series.
      Returns:
      The location for a label.

    • equals

      public boolean equals(Object obj)
      Tests this plot for equality with an arbitrary object.
      Overrides:
      equals in class Plot
      Parameters:
      obj - the object (null permitted).
      Returns:
      A boolean.

    • clone

      public Object clone() throws CloneNotSupportedException
      Returns a clone of this plot.
      Specified by:
      clone in interface PublicCloneable
      Overrides:
      clone in class Plot
      Returns:
      A clone of this plot.
      Throws:
      CloneNotSupportedException - if the plot cannot be cloned for any reason.

    • dispose

      public void dispose()
      Specified by:
      dispose in interface Disposable