databionics.esom.grid
Class ToroidEuclideanGrid

java.lang.Object
  databionics.esom.grid.Grid
      databionics.esom.grid.MatrixGrid
          databionics.esom.grid.RectangularGrid
              databionics.esom.grid.ToroidRectangularGrid
                  databionics.esom.grid.ToroidGrid
                      databionics.esom.grid.ToroidEuclideanGrid

public class ToroidEuclideanGrid
extends ToroidGrid

Toroid grid with euclidean distance.

Field Summary

protected static org.apache.log4j.Logger

log interface to log4j system

Fields inherited from class databionics.esom.grid.RectangularGrid

columns, rows

Fields inherited from class databionics.esom.grid.MatrixGrid

weights

Fields inherited from class databionics.esom.grid.Grid

dim, distanceFunction, distanceFunctionName, size

Constructor Summary

ToroidEuclideanGrid()
Standard constructor

ToroidEuclideanGrid(int rows, int cols, int dim)
Constructor with sizes

Method Summary

int	gridDistance(int row1, int col1, int row2, int col2) Squared Euclidean distance on toroid rectangular grids.
int	transformRadius(int radius) How to transform an official radius into the squared internal format.

Methods inherited from class databionics.esom.grid.ToroidGrid

findNeighbors

Methods inherited from class databionics.esom.grid.ToroidRectangularGrid

coordinates2index, shift

Methods inherited from class databionics.esom.grid.RectangularGrid

coordinates2index, getColumns, getNeuron, getRows, getWts, index2col, index2col, index2row, index2row, init, loadWeights, manhattanGridDistance, maximumGridDistance, saveWeights, saveWeights, setColumns, setRows, squaredEuclideanGridDistance

Methods inherited from class databionics.esom.grid.MatrixGrid

getNeuron, getWeights, init, setDim, setSize

Methods inherited from class databionics.esom.grid.Grid

dim, getDistanceFunction, getDistanceFunctionName, init, init, setDistanceFunction, setDistanceFunction, size

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

log

protected static final org.apache.log4j.Logger log

interface to log4j system

Constructor Detail

ToroidEuclideanGrid

public ToroidEuclideanGrid()

Standard constructor

ToroidEuclideanGrid

public ToroidEuclideanGrid(int rows,
                           int cols,
                           int dim)

Constructor with sizes

Parameters:

rows - Rows of data array.

cols - Columns of data array.

dim - Dimension of data array.

Method Detail

gridDistance

public int gridDistance(int row1,
                        int col1,
                        int row2,
                        int col2)

Squared Euclidean distance on toroid rectangular grids.

Specified by:

gridDistance in class RectangularGrid

Parameters:

row1 - row number on grid

col1 - column number on grid

row2 - row number on grid

col2 - column number on grid

transformRadius

public int transformRadius(int radius)

How to transform an official radius into the squared internal format.

Overrides:

transformRadius in class Grid

Parameters:

radius - current maximal radius

Returns:

transformed radius, default is identity