Package org.esa.snap.core.util.math

Provides utility classes for mathematical operations.

Interface Summary

Interface	Description
Array	Interface for wrapping primitive arrays.
DistanceMeasure	Interface for measuring the distance of a (lon, lat) point to a reference (lon, lat) point, which is defined by the implementing class.
DoubleList	The double list provides a generic access to an ordered list of values of type double.
FX	Represents a function f(x).
FXY	Represents a function f(x,y).
IndexValidator	An interface used as parameter to several methods which perform some actions on data arrays.
MatrixFactory	Matrix factory.
SpectralUnmixing	Linear spectral unmixing interface.

Class Summary

Class	Description
Approximator	A utility class which can be used to find approximation functions for a given dataset.
Array.Double	Class for wrapping double primitive arrays.
Array.Float	Class for wrapping float primitive arrays.
ColumnMajorMatrixFactory	Matrix factory implementation.
ConstrainedLSU	Performs a constrained linear spectral unmixing, where the sum of abundances always is equal to unity.
CosineDistance	This class uses the negative cosine of the spherical distance as a distance measure between two (lon, lat) points.
DoubleList.Byte	Wraps a DoubleList around an array of primitive bytes.
DoubleList.Double	Wraps a DoubleList around an array of primitive doubles.
DoubleList.Float	Wraps a DoubleList around an array of primitive floats.
DoubleList.Int	Wraps a DoubleList around an array of primitive ints.
DoubleList.Long	Wraps a DoubleList around an array of primitive longs.
DoubleList.Short	Wraps a DoubleList around an array of primitive shorts.
DoubleList.UByte	Wraps a DoubleList around an array of primitive bytes interpreted as unsigned integers.
DoubleList.UInt	Wraps a DoubleList around an array of primitive ints interpreted as unsigned integers.
DoubleList.ULong	Wraps a DoubleList around an array of primitive longs interpreted as unsigned integers.
DoubleList.UShort	Wraps a DoubleList around an array of primitive shorts interpreted as unsigned integers.
EuclideanDistance	Distance measure based on the Euclidean 'flat' distance.
FracIndex	The class FracIndex is a simple representation of an index with an integral and a fractional component.
FullyConstrainedLSU	Performs a fully constrained linear spectral unmixing, where all abundances are non-negative and their sum is equal to unity.
FXYSum	The class FXYSum represents a sum of function terms sum(c[i] * f[i](x,y), i=0, n-1) where the vector c is a double array of constant coefficients and the vector f is an array of functions of type FXY in x and y.
FXYSum.BiCubic	Provides an optimized computeZ method for bi-cubic polynomials (order = 3+3).
FXYSum.BiLinear	Provides an optimized computeZ method for bi-linear polynomials (order = 1+1).
FXYSum.BiQuadric	Provides an optimized computeZ method for bi-quadric polynomials (order = 2+2).
FXYSum.Cubic	Provides an optimized computeZ method for cubic polynomials (order = 3).
FXYSum.Linear	Provides an optimized computeZ method for linear polynomials (order = 1).
FXYSum.Quadric	Provides an optimized computeZ method for quadric polynomials (order = 2).
Histogram	Instances of the Histogram class store histogram data.
IntervalPartition	The class IntervalPartition is a representation of an interval partition, i.e.
LinearAlgebra	Linear algebra - calculations and utilities for vectors and matrixes.
LinEqSysSolver	A gauss-based solver for linear equation systems.
LogLinearTransform	Math utils for transforming between log and linear.
LookupTable	The class LookupTable performs the function of multilinear interpolation for lookup tables with an arbitrary number of dimensions.
MathUtils	A utility class providing frequently used mathematical functions which are not found in the java.lang.Math class.
MatrixLookupTable	The class MatrixLookupTable performs the function of multilinear interpolation for matrix lookup tables with an arbitrary number of dimensions.
Quantizer
Range	Instances of the Range class provide a minimum and a maximum value of type double.
RsMathUtils	A utility class providing a set of mathematical functions frequently used in the fields of remote sensing.
SinusoidalDistance	Distance measure that takes into account the decrease of the Euclidean distance with increasing latitude of the reference point.
SphericalDistance	This class computes the spherical distance (in Radian) between two (lon, lat) points.
UnconstrainedLSU	Performs an unconstrained linear spectral unmixing.
VectorLookupTable	The class VectorLookupTable performs the function of multilinear interpolation for vector lookup tables with an arbitrary number of dimensions.

Exception Summary

Exception	Description
SingularMatrixException	Thrown, if a matrix is singular and processing cannot be continued.