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Java Source Code / Java Documentation » Chart » jfreechart » org.jfree.data

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.jfree.data .DataUtilities

DataUtilities
abstract public class DataUtilities (Code)
	Utility methods for use with some of the data classes (but not the datasets, see DatasetUtilities ).

Method Summary
public static double	calculateColumnTotal(Values2D data, int column) Returns the total of the values in one column of the supplied data table. Parameters: data - the table of values (`null` not permitted). Parameters: column - the column index (zero-based).
public static double	calculateRowTotal(Values2D data, int row) Returns the total of the values in one row of the supplied data table. Parameters: data - the table of values (`null` not permitted). Parameters: row - the row index (zero-based).
public static Number[]	createNumberArray(double[] data) Constructs an array of `Number` objects from an array of `double` primitives. Parameters: data - the data (`null` not permitted).
public static Number[][]	createNumberArray2D(double[][] data) Constructs an array of arrays of `Number` objects from a corresponding structure containing `double` primitives. Parameters: data - the data (`null` not permitted).
public static KeyedValues	getCumulativePercentages(KeyedValues data) Returns a KeyedValues instance that contains the cumulative percentage values for the data in another KeyedValues instance. The percentages are values between 0.0 and 1.0 (where 1.0 = 100%). Parameters: data - the data (`null` not permitted).

Method Detail

calculateColumnTotal
public static double calculateColumnTotal(Values2D data, int column)(Code)
	Returns the total of the values in one column of the supplied data table. Parameters: data - the table of values (`null` not permitted). Parameters: column - the column index (zero-based). The total of the values in the specified column.

calculateRowTotal
public static double calculateRowTotal(Values2D data, int row)(Code)
	Returns the total of the values in one row of the supplied data table. Parameters: data - the table of values (`null` not permitted). Parameters: row - the row index (zero-based). The total of the values in the specified row.

createNumberArray
public static Number[] createNumberArray(double[] data)(Code)
	Constructs an array of `Number` objects from an array of `double` primitives. Parameters: data - the data (`null` not permitted). An array of `Double`.

createNumberArray2D
public static Number[][] createNumberArray2D(double[][] data)(Code)
	Constructs an array of arrays of `Number` objects from a corresponding structure containing `double` primitives. Parameters: data - the data (`null` not permitted). An array of `Double`.

getCumulativePercentages
public static KeyedValues getCumulativePercentages(KeyedValues data)(Code)
	Returns a KeyedValues instance that contains the cumulative percentage values for the data in another KeyedValues instance. The percentages are values between 0.0 and 1.0 (where 1.0 = 100%). Parameters: data - the data (`null` not permitted). The cumulative percentages.

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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