Module: StairCar::PMatrixTypes

Included in:
PMatrix
Defined in:
lib/stair_car/pmatrix/types.rb

Instance Method Summary collapse

Instance Method Details

#sparse? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/stair_car/pmatrix/types.rb', line 18

def sparse?
  klass = @data.class
  if klass == Java::CernColtMatrixTdoubleImpl::DenseDoubleMatrix2D
    return false
  elsif klass == Java::CernColtMatrixTdoubleImpl::SparseDoubleMatrix2D
    return true
  elsif klass == Java::CernColtMatrixTfloatImpl::DenseFloatMatrix2D
    return false
  elsif klass == Java::CernColtMatrixTfloatImpl::SparseFloatMatrix2D
    return true
  end
end

#type ⇒ Object 



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# File 'lib/stair_car/pmatrix/types.rb', line 5

def type
  klass = @data.class
  if klass == Java::CernColtMatrixTdoubleImpl::DenseDoubleMatrix2D
    return :double
  elsif klass == Java::CernColtMatrixTdoubleImpl::SparseDoubleMatrix2D
    return :double
  elsif klass == Java::CernColtMatrixTfloatImpl::DenseFloatMatrix2D
    return :float
  elsif klass == Java::CernColtMatrixTfloatImpl::SparseFloatMatrix2D
    return :float
  end
end

#type_class(type, sparse, initialize_values) ⇒ Object 



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# File 'lib/stair_car/pmatrix/types.rb', line 32

def type_class(type, sparse, initialize_values)
  types = {
    :zeros => {
      false => {
        # dense
        :double => Java::cern.colt.matrix.tdouble.impl.DenseDoubleMatrix2D,
        :float => Java::cern.colt.matrix.tfloat.impl.DenseFloatMatrix2D
      },
      true => {
        # sparse
        :double => Java::cern.colt.matrix.tdouble.impl.SparseDoubleMatrix2D,
        # :double => Proc.new {|rows,cols| Java::cern.colt.matrix.tdouble.impl.SparseDoubleMatrix2D.new(rows,cols,10000.to_java(:int),0.0.to_java(:double),0.999999999.to_java(:double)) },
        :float => Java::cern.colt.matrix.tfloat.impl.SparseFloatMatrix2D
      }
    },
    :ones => {
      false => {
        # dense
        :double => Java::cern.colt.matrix.tdouble.impl.DenseDoubleMatrix2D,
        :float => Java::cern.colt.matrix.tfloat.impl.DenseFloatMatrix2D
      },
      true => {
        # sparse
        :double => Java::cern.colt.matrix.tdouble.impl.SparseDoubleMatrix2D,
        :float => Java::cern.colt.matrix.tfloat.impl.SparseFloatMatrix2D
      }
    },
    :rand => {
      false => {
        # dense
        :double => Java::cern.colt.matrix.tdouble.DoubleFactory2D.dense.method(:random),
        :float => Java::cern.colt.matrix.tfloat.FloatFactory2D.dense.method(:random)
      },
      true => {
        # sparse
        :double => Java::cern.colt.matrix.tdouble.DoubleFactory2D.sparse.method(:random),
        :float => Java::cern.colt.matrix.tfloat.FloatFactory2D.sparse.method(:random)
      }
    },
    :desc => {
      false => {
        # dense
        :double => Java::cern.colt.matrix.tdouble.DoubleFactory2D.dense.method(:descending),
        :float => Java::cern.colt.matrix.tfloat.FloatFactory2D.dense.method(:descending)
      },
      true => {
        # sparse
        :double => Java::cern.colt.matrix.tdouble.DoubleFactory2D.sparse.method(:descending),
        :float => Java::cern.colt.matrix.tfloat.FloatFactory2D.sparse.method(:descending)
      }
    },
    :asc => {
      false => {
        # dense
        :double => Java::cern.colt.matrix.tdouble.DoubleFactory2D.dense.method(:ascending),
        :float => Java::cern.colt.matrix.tfloat.FloatFactory2D.dense.method(:ascending)
      },
      true => {
        # sparse
        :double => Java::cern.colt.matrix.tdouble.DoubleFactory2D.sparse.method(:ascending),
        :float => Java::cern.colt.matrix.tfloat.FloatFactory2D.sparse.method(:ascending)
      }
    }
  }

  klass = types[initialize_values][sparse][type]

  unless klass
    raise "Could not make a #{sparse ? 'sparse' : 'dense'} #{type} matrix"
  end

  return klass
end