Method: TwoDMatrix#decompose

Defined in:
lib/csrmatrix.rb

#decompose ⇒ Object 



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# File 'lib/csrmatrix.rb', line 148

def decompose()
# decompose the matrix into an array
# pre  csrmatrix
# post array from the csrmartix
  res = Array.new(@rows) { Array.new(@columns, 0) }
  row_counter = 0
  row_idx = 0
  @row_ptr.drop(1).each do |i| #eg. 2 4 7 10
    while row_counter < i 
      res[row_idx][@col_ind[row_counter]] = @val[row_counter]
      row_counter += 1
    end 
    row_idx += 1
  end
  return res
end