ConstrainedLSU (SNAP Engine API)

java.lang.Object
- org.esa.snap.core.util.math.UnconstrainedLSU
- - org.esa.snap.core.util.math.ConstrainedLSU

All Implemented Interfaces:

SpectralUnmixing
```
public class ConstrainedLSU
extends UnconstrainedLSU
```
Performs a constrained linear spectral unmixing, where the sum of abundances always is equal to unity.

Since:

4.1

- Constructor Summary
  
  Constructors
  Constructor Description
  
  ConstrainedLSU(double[][] endmembers)
  Constructs a new instance of this class.
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  double[][] unmix(double[][] spectra)
  Performs a linear spectral unmixing of a set of spectra.
  - Methods inherited from class org.esa.snap.core.util.math.UnconstrainedLSU
    getEndmembers, mix
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - ConstrainedLSU
```
public ConstrainedLSU(double[][] endmembers)
```
    Constructs a new instance of this class.
    
    Parameters:
    
    endmembers - the endmembers, where number of rows = number of spectral channels number of cols = number of endmember spectra
- Method Detail
  - unmix
```
public double[][] unmix(double[][] spectra)
```
    Description copied from interface: SpectralUnmixing
    
    Performs a linear spectral unmixing of a set of spectra.
    
    Specified by:
    
    unmix in interface SpectralUnmixing
    
    Overrides:
    
    unmix in class UnconstrainedLSU
    
    Parameters:
    
    spectra - the spectra, where number of rows = number of spectral channels number of cols = number of spectra
    
    Returns:
    
    the abundances, where number of rows = number of endmembers number of cols = number of spectra