org.jfree.data.contour.DefaultContourDataset Maven / Gradle / Ivy
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/* ===========================================================
* JFreeChart : a free chart library for the Java(tm) platform
* ===========================================================
*
* (C) Copyright 2000-2011, by Object Refinery Limited and Contributors.
*
* Project Info: http://www.jfree.org/jfreechart/index.html
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
* Other names may be trademarks of their respective owners.]
*
* --------------------------
* DefaultContourDataset.java
* --------------------------
* (C) Copyright 2002-2008, by David M. O'Donnell and Contributors.
*
* Original Author: David M. O'Donnell;
* Contributor(s): David Gilbert (for Object Refinery Limited);
*
* Changes (from 23-Jan-2003)
* --------------------------
* 23-Jan-2003 : Added standard header (DG);
* 20-May-2003 : removed member vars numX and numY, which were never used (TM);
* 06-May-2004 : Now extends AbstractXYZDataset (DG);
* 15-Jul-2004 : Switched getX() with getXValue(), getY() with getYValue() and
* getZ() with getZValue() methods (DG);
* ------------- JFREECHART 1.0.x --------------------------------------------
* 31-Jan-2007 : Deprecated (DG);
*
*/
package org.jfree.data.contour;
import java.util.Arrays;
import java.util.Date;
import java.util.Vector;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYBlockRenderer;
import org.jfree.data.Range;
import org.jfree.data.xy.AbstractXYZDataset;
import org.jfree.data.xy.XYDataset;
/**
* A convenience class that provides a default implementation of the
* {@link ContourDataset} interface.
*
* @deprecated This class is no longer supported (as of version 1.0.4). If
* you are creating contour plots, please try to use {@link XYPlot} and
* {@link XYBlockRenderer}.
*/
public class DefaultContourDataset extends AbstractXYZDataset
implements ContourDataset {
/** The series name (this dataset supports only one series). */
protected Comparable seriesKey = null;
/** Storage for the x values. */
protected Number[] xValues = null;
/** Storage for the y values. */
protected Number[] yValues = null;
/** Storage for the z values. */
protected Number[] zValues = null;
/** The index for the start of each column in the data. */
protected int[] xIndex = null;
/** Flags that track whether x, y and z are dates. */
boolean[] dateAxis = new boolean[3];
/**
* Creates a new dataset, initially empty.
*/
public DefaultContourDataset() {
super();
}
/**
* Constructs a new dataset with the given data.
*
* @param seriesKey the series key.
* @param xData the x values.
* @param yData the y values.
* @param zData the z values.
*/
public DefaultContourDataset(Comparable seriesKey,
Object[] xData,
Object[] yData,
Object[] zData) {
this.seriesKey = seriesKey;
initialize(xData, yData, zData);
}
/**
* Initialises the dataset.
*
* @param xData the x values.
* @param yData the y values.
* @param zData the z values.
*/
public void initialize(Object[] xData,
Object[] yData,
Object[] zData) {
this.xValues = new Double[xData.length];
this.yValues = new Double[yData.length];
this.zValues = new Double[zData.length];
// We organise the data with the following assumption:
// 1) the data are sorted by x then y
// 2) that the data will be represented by a rectangle formed by
// using x[i+1], x, y[j+1], and y.
// 3) we march along the y-axis at the same value of x until a new
// value x is found at which point we will flag the index
// where x[i+1]<>x[i]
Vector tmpVector = new Vector(); //create a temporary vector
double x = 1.123452e31; // set x to some arbitary value (used below)
for (int k = 0; k < this.xValues.length; k++) {
if (xData[k] != null) {
Number xNumber;
if (xData[k] instanceof Number) {
xNumber = (Number) xData[k];
}
else if (xData[k] instanceof Date) {
this.dateAxis[0] = true;
Date xDate = (Date) xData[k];
xNumber = new Long(xDate.getTime()); //store data as Long
}
else {
xNumber = new Integer(0);
}
this.xValues[k] = new Double(xNumber.doubleValue());
// store Number as Double
// check if starting new column
if (x != this.xValues[k].doubleValue()) {
tmpVector.add(new Integer(k)); //store index where new
//column starts
x = this.xValues[k].doubleValue();
// set x to most recent value
}
}
}
Object[] inttmp = tmpVector.toArray();
this.xIndex = new int[inttmp.length]; // create array xIndex to hold
// new column indices
for (int i = 0; i < inttmp.length; i++) {
this.xIndex[i] = ((Integer) inttmp[i]).intValue();
}
for (int k = 0; k < this.yValues.length; k++) { // store y and z axes
// as Doubles
this.yValues[k] = (Double) yData[k];
if (zData[k] != null) {
this.zValues[k] = (Double) zData[k];
}
}
}
/**
* Creates an object array from an array of doubles.
*
* @param data the data.
*
* @return An array of Double objects.
*/
public static Object[][] formObjectArray(double[][] data) {
Object[][] object = new Double[data.length][data[0].length];
for (int i = 0; i < object.length; i++) {
for (int j = 0; j < object[i].length; j++) {
object[i][j] = new Double(data[i][j]);
}
}
return object;
}
/**
* Creates an object array from an array of doubles.
*
* @param data the data.
*
* @return An array of Double objects.
*/
public static Object[] formObjectArray(double[] data) {
Object[] object = new Double[data.length];
for (int i = 0; i < object.length; i++) {
object[i] = new Double(data[i]);
}
return object;
}
/**
* Returns the number of items in the specified series. This method
* is provided to satisfy the {@link XYDataset} interface implementation.
*
* @param series must be zero, as this dataset only supports one series.
*
* @return The item count.
*/
public int getItemCount(int series) {
if (series > 0) {
throw new IllegalArgumentException("Only one series for contour");
}
return this.zValues.length;
}
/**
* Returns the maximum z-value.
*
* @return The maximum z-value.
*/
public double getMaxZValue() {
double zMax = -1.e20;
for (int k = 0; k < this.zValues.length; k++) {
if (this.zValues[k] != null) {
zMax = Math.max(zMax, this.zValues[k].doubleValue());
}
}
return zMax;
}
/**
* Returns the minimum z-value.
*
* @return The minimum z-value.
*/
public double getMinZValue() {
double zMin = 1.e20;
for (int k = 0; k < this.zValues.length; k++) {
if (this.zValues[k] != null) {
zMin = Math.min(zMin, this.zValues[k].doubleValue());
}
}
return zMin;
}
/**
* Returns the maximum z-value within visible region of plot.
*
* @param x the x range.
* @param y the y range.
*
* @return The z range.
*/
public Range getZValueRange(Range x, Range y) {
double minX = x.getLowerBound();
double minY = y.getLowerBound();
double maxX = x.getUpperBound();
double maxY = y.getUpperBound();
double zMin = 1.e20;
double zMax = -1.e20;
for (int k = 0; k < this.zValues.length; k++) {
if (this.xValues[k].doubleValue() >= minX
&& this.xValues[k].doubleValue() <= maxX
&& this.yValues[k].doubleValue() >= minY
&& this.yValues[k].doubleValue() <= maxY) {
if (this.zValues[k] != null) {
zMin = Math.min(zMin, this.zValues[k].doubleValue());
zMax = Math.max(zMax, this.zValues[k].doubleValue());
}
}
}
return new Range(zMin, zMax);
}
/**
* Returns the minimum z-value.
*
* @param minX the minimum x value.
* @param minY the minimum y value.
* @param maxX the maximum x value.
* @param maxY the maximum y value.
*
* @return The minimum z-value.
*/
public double getMinZValue(double minX,
double minY,
double maxX,
double maxY) {
double zMin = 1.e20;
for (int k = 0; k < this.zValues.length; k++) {
if (this.zValues[k] != null) {
zMin = Math.min(zMin, this.zValues[k].doubleValue());
}
}
return zMin;
}
/**
* Returns the number of series.
*
* Required by XYDataset interface (this will always return 1)
*
* @return 1.
*/
public int getSeriesCount() {
return 1;
}
/**
* Returns the name of the specified series.
*
* Method provided to satisfy the XYDataset interface implementation
*
* @param series must be zero.
*
* @return The series name.
*/
public Comparable getSeriesKey(int series) {
if (series > 0) {
throw new IllegalArgumentException("Only one series for contour");
}
return this.seriesKey;
}
/**
* Returns the index of the xvalues.
*
* @return The x values.
*/
public int[] getXIndices() {
return this.xIndex;
}
/**
* Returns the x values.
*
* @return The x values.
*/
public Number[] getXValues() {
return this.xValues;
}
/**
* Returns the x value for the specified series and index (zero-based
* indices). Required by the {@link XYDataset}.
*
* @param series must be zero;
* @param item the item index (zero-based).
*
* @return The x value.
*/
public Number getX(int series, int item) {
if (series > 0) {
throw new IllegalArgumentException("Only one series for contour");
}
return this.xValues[item];
}
/**
* Returns an x value.
*
* @param item the item index (zero-based).
*
* @return The X value.
*/
public Number getXValue(int item) {
return this.xValues[item];
}
/**
* Returns a Number array containing all y values.
*
* @return The Y values.
*/
public Number[] getYValues() {
return this.yValues;
}
/**
* Returns the y value for the specified series and index (zero-based
* indices). Required by the {@link XYDataset}.
*
* @param series the series index (must be zero for this dataset).
* @param item the item index (zero-based).
*
* @return The Y value.
*/
public Number getY(int series, int item) {
if (series > 0) {
throw new IllegalArgumentException("Only one series for contour");
}
return this.yValues[item];
}
/**
* Returns a Number array containing all z values.
*
* @return The Z values.
*/
public Number[] getZValues() {
return this.zValues;
}
/**
* Returns the z value for the specified series and index (zero-based
* indices). Required by the {@link XYDataset}
*
* @param series the series index (must be zero for this dataset).
* @param item the item index (zero-based).
*
* @return The Z value.
*/
public Number getZ(int series, int item) {
if (series > 0) {
throw new IllegalArgumentException("Only one series for contour");
}
return this.zValues[item];
}
/**
* Returns an int array contain the index into the x values.
*
* @return The X values.
*/
public int[] indexX() {
int[] index = new int[this.xValues.length];
for (int k = 0; k < index.length; k++) {
index[k] = indexX(k);
}
return index;
}
/**
* Given index k, returns the column index containing k.
*
* @param k index of interest.
*
* @return The column index.
*/
public int indexX(int k) {
int i = Arrays.binarySearch(this.xIndex, k);
if (i >= 0) {
return i;
}
else {
return -1 * i - 2;
}
}
/**
* Given index k, return the row index containing k.
*
* @param k index of interest.
*
* @return The row index.
*/
public int indexY(int k) { // this may be obsolete (not used anywhere)
return (k / this.xValues.length);
}
/**
* Given column and row indices, returns the k index.
*
* @param i index of along x-axis.
* @param j index of along y-axis.
*
* @return The Z index.
*/
public int indexZ(int i, int j) {
return this.xValues.length * j + i;
}
/**
* Returns true if axis are dates.
*
* @param axisNumber The axis where 0-x, 1-y, and 2-z.
*
* @return A boolean.
*/
public boolean isDateAxis(int axisNumber) {
if (axisNumber < 0 || axisNumber > 2) {
return false; // bad axisNumber
}
return this.dateAxis[axisNumber];
}
/**
* Sets the names of the series in the data source.
*
* @param seriesKeys the keys of the series in the data source.
*/
public void setSeriesKeys(Comparable[] seriesKeys) {
if (seriesKeys.length > 1) {
throw new IllegalArgumentException(
"Contours only support one series");
}
this.seriesKey = seriesKeys[0];
fireDatasetChanged();
}
}