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org.jfree.data.contour

Class NonGridContourDataset

Implemented Interfaces:
Cloneable, ContourDataset, Dataset, EventListener, ObjectInputValidation, Serializable, SeriesChangeListener, SeriesDataset, XYDataset, XYZDataset
public class NonGridContourDataset
extends DefaultContourDataset
A convenience class that extends the DefaultContourDataset to accommodate non-grid data.

Field Summary

Fields inherited from class org.jfree.data.contour.DefaultContourDataset

seriesKey, xIndex, xValues, yValues, zValues

Constructor Summary

NonGridContourDataset()
Default constructor.
NonGridContourDataset(String seriesName, Object[] xData, Object[] yData, Object[] zData)
Constructor for NonGridContourDataset.
NonGridContourDataset(String seriesName, Object[] xData, Object[] yData, Object[] zData, int numX, int numY, int power)
Constructor for NonGridContourDataset.

Method Summary

protected void
buildGrid(int numX, int numY, int power)
Builds a regular grid.
protected double
distance(double xDataPt, double yDataPt, double xGrdPt, double yGrdPt)
Calculates the distance between two points.

Methods inherited from class org.jfree.data.contour.DefaultContourDataset

formObjectArray, formObjectArray, getItemCount, getMaxZValue, getMinZValue, getMinZValue, getSeriesCount, getSeriesKey, getX, getXIndices, getXValue, getXValues, getY, getYValues, getZ, getZValueRange, getZValues, indexX, indexX, indexY, indexZ, initialize, isDateAxis, setSeriesKeys

Methods inherited from class org.jfree.data.xy.AbstractXYZDataset

getZValue

Methods inherited from class org.jfree.data.xy.AbstractXYDataset

getDomainOrder, getXValue, getYValue

Methods inherited from class org.jfree.data.general.AbstractSeriesDataset

getSeriesCount, getSeriesKey, indexOf, seriesChanged

Methods inherited from class org.jfree.data.general.AbstractDataset

addChangeListener, clone, fireDatasetChanged, getGroup, hasListener, notifyListeners, removeChangeListener, setGroup, validateObject

Constructor Details

NonGridContourDataset

public NonGridContourDataset()
Default constructor.

NonGridContourDataset

public NonGridContourDataset(String seriesName,
                             Object[] xData,
                             Object[] yData,
                             Object[] zData)
Constructor for NonGridContourDataset. Uses default values for grid dimensions and weighting.
Parameters:
seriesName - the series name.
xData - the x values.
yData - the y values.
zData - the z values.

NonGridContourDataset

public NonGridContourDataset(String seriesName,
                             Object[] xData,
                             Object[] yData,
                             Object[] zData,
                             int numX,
                             int numY,
                             int power)
Constructor for NonGridContourDataset.
Parameters:
seriesName - the series name.
xData - the x values.
yData - the y values.
zData - the z values.
numX - number grid cells in along the x-axis
numY - number grid cells in along the y-axis
power - exponent for inverse distance weighting

Method Details

buildGrid

protected void buildGrid(int numX,
                         int numY,
                         int power)
Builds a regular grid. Maps the non-grid data into the regular grid using an inverse distance between grid and non-grid points. Weighting of distance can be controlled by setting through the power parameter that controls the exponent used on the distance weighting (e.g., distance^power).
Parameters:
numX - number grid points in along the x-axis
numY - number grid points in along the y-axis
power - exponent for inverse distance weighting

distance

protected double distance(double xDataPt,
                          double yDataPt,
                          double xGrdPt,
                          double yGrdPt)
Calculates the distance between two points.
Parameters:
xDataPt - the x coordinate.
yDataPt - the y coordinate.
xGrdPt - the x grid coordinate.
yGrdPt - the y grid coordinate.
Returns:
The distance between two points.

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