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