cern.extjfx.chart.data

Class DataUtils

java.lang.Object

cern.extjfx.chart.data.DataUtils

public final class DataUtils
extends Object

Utility methods related to chart data.

Method Summary

Modifier and Type	Method and Description
static <X extends Number,Y extends Number> int	binarySearch(ChartData<X,Y> data, double x) Searches the specified ChartData for the data point with specified X coordinate using the binary search algorithm.
static <X extends Number,Y extends Number> int	insertionIndex(ChartData<X,Y> data, double x) Returns insertion index of specified X coordinate within given chart data.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

insertionIndex

public static <X extends Number,Y extends Number> int insertionIndex(ChartData<X,Y> data,
                                                                     double x)

Returns insertion index of specified X coordinate within given chart data.

Type Parameters:

X - X value type

Y - Y value type

Parameters:

data - the searched data

x - X coordinate whose insertion index should be returned

Returns:

index at which a point with given X coordinate would be inserted in specified data.

binarySearch

public static <X extends Number,Y extends Number> int binarySearch(ChartData<X,Y> data,
                                                                   double x)

Searches the specified ChartData for the data point with specified X coordinate using the binary search algorithm. Points in the given ChartData must be sorted. This method is an equivalent of Arrays.binarySearch(double[], double) but dedicated to ChartData.

Type Parameters:

X - X value type

Y - Y value type

Parameters:

data - the searched data

x - X coordinate whose index should be returned

Returns:

index of the search X value, if it is contained in the ChartData; otherwise, (-(insertion point) - 1). The insertion point is defined as the point at which the key would be inserted into the data: the index of the first element greater than the X, or data.size() if all elements in the array are less than the specified X. Note that this guarantees that the return value will be >= 0 if and only if the X is found.

See Also:

Arrays.binarySearch(double[], double)