DComplexFactory1D
cern.colt.matrix.tdcomplex

Class DComplexFactory1D

  • All Implemented Interfaces:
    Serializable, Cloneable


    public class DComplexFactory1Dextends PersistentObject
    Factory for convenient construction of 1-d matrices holding complex cells. Use idioms like ComplexFactory1D.dense.make(1000) to construct dense matrices, ComplexFactory1D.sparse.make(1000) to construct sparse matrices. If the factory is used frequently it might be useful to streamline the notation. For example by aliasing:
      ComplexFactory1D F = ComplexFactory1D.dense;  F.make(1000);  F.random(3);  ... 
    See Also:
    Serialized Form
    • Field Detail

      • sparse

        public static final DComplexFactory1D sparse
        A factory producing sparse matrices.
    • Method Detail

      • make

        public DComplexMatrix1D make(double[] values)
        Constructs a matrix with the given cell values. The values are copied. So subsequent changes in values are not reflected in the matrix, and vice-versa.
        Parameters:
        values - The values to be filled into the new matrix.
      • make

        public DComplexMatrix1D make(int size)
        Constructs a matrix with the given shape, each cell initialized with zero.
      • make

        public DComplexMatrix1D make(int size,                    double[] initialValue)
        Constructs a matrix with the given shape, each cell initialized with the given value.
      • make

        public DComplexMatrix1D make(ArrayList<double[]> values)
        Constructs a matrix from the values of the given list. The values are copied. So subsequent changes in values are not reflected in the matrix, and vice-versa.
        Parameters:
        values - The values to be filled into the new matrix.
        Returns:
        a new matrix.
      • random

        public DComplexMatrix1D random(int size)
        Constructs a matrix with uniformly distributed values in (0,1) (exclusive).
      • sample

        public DComplexMatrix1D sample(int size,                      double[] value,                      double nonZeroFraction)
        Constructs a randomly sampled matrix with the given shape. Randomly picks exactly Math.round(size*nonZeroFraction) cells and initializes them to value, all the rest will be initialized to zero. Note that this is not the same as setting each cell with probability nonZeroFraction to value.
        Throws:
        IllegalArgumentException - if nonZeroFraction < 0 || nonZeroFraction > 1.
        See Also:
        DoubleRandomSampler
      • toList

        public ArrayList<double[]> toList(DComplexMatrix1D values)
        Constructs a list from the given matrix. The values are copied. So subsequent changes in values are not reflected in the list, and vice-versa.
        Parameters:
        values - The values to be filled into the new list.
        Returns:
        a new list.

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