Package hec.hecmath

Class DoubleArrayUtilities

java.lang.Object

hec.hecmath.DoubleArrayUtilities

public final class DoubleArrayUtilities
extends Object

Method Summary

Modifier and Type	Method	Description
static void	arrayFunctionalFill(DoubleUnaryOperator function, double[] dataArray, double[] arrayToFill)	fills array with function and supporting data array
static void	arrayTransform(DoubleUnaryOperator function, double[] array)	transforms array with function
static int	binarySearch(double xValue, double[] xArray)	returns the index of xValue in xArray, or the first bounding index data expected to be monotonic
static double[]	copyArray(double[] array)
static double[][]	copyArray(double[][] array)
static boolean	enforceMontonicallyDecreasing(double[] array, int middleIndex)
static void	enforceMontonicallyIncreasing(double[] array, int middleIndex)
static Double	interpolate(Double x, Double x1, Double y1, Double x2, Double y2)	linear interpolation.
static double	interpolatePairedArrays(double xValue, double[] xArray, double[] yArray)	interpolates the value in the yArray, based on the location of xValue in the xArray linearly xArray be either monotonically increasing or decreasing.
static double[]	linearInterpolationFill(int numOrdinates, double first, double last)	fill array with

Methods inherited from class java.lang.Object

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

Method Details

interpolatePairedArrays

public static double interpolatePairedArrays(double xValue,
 double[] xArray,
 double[] yArray)

interpolates the value in the yArray, based on the location of xValue in the xArray linearly xArray be either monotonically increasing or decreasing.

Parameters:

xValue -

xArray -

yArray -

Returns:

binarySearch

public static int binarySearch(double xValue,
 double[] xArray)

returns the index of xValue in xArray, or the first bounding index data expected to be monotonic

Parameters:

xValue -

xArray -

Returns:

enforceMontonicallyDecreasing

public static boolean enforceMontonicallyDecreasing(double[] array,
 int middleIndex)

enforceMontonicallyIncreasing

public static void enforceMontonicallyIncreasing(double[] array,
 int middleIndex)

linearInterpolationFill

public static double[] linearInterpolationFill(int numOrdinates,
 double first,
 double last)

fill array with

interpolate

public static Double interpolate(Double x,
 Double x1,
 Double y1,
 Double x2,
 Double y2)

linear interpolation. Also supports extrapolation

Parameters:

x -

x1 -

y1 -

x2 -

y2 -

Returns:

arrayTransform

public static void arrayTransform(DoubleUnaryOperator function,
 double[] array)

transforms array with function

Parameters:

function -

array -

arrayFunctionalFill

public static void arrayFunctionalFill(DoubleUnaryOperator function,
 double[] dataArray,
 double[] arrayToFill)

fills array with function and supporting data array

Parameters:

function -

dataArray -

arrayToFill -

copyArray

public static double[][] copyArray(double[][] array)

copyArray

public static double[] copyArray(double[] array)