RealMatrixChangingVisitor (Apache Commons Math 4.0-SNAPSHOT)

All Known Implementing Classes:

DefaultRealMatrixChangingVisitor
```
public interface RealMatrixChangingVisitor
```
Interface defining a visitor for matrix entries.

Since:

2.0

See Also:

DefaultRealMatrixChangingVisitor

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`double`	`end()`	End visiting a matrix.
`void`	`start(int rows, int columns, int startRow, int endRow, int startColumn, int endColumn)`	Start visiting a matrix.
`double`	`visit(int row, int column, double value)`	Visit one matrix entry.

- Method Detail
  - start
```
void start(int rows,
           int columns,
           int startRow,
           int endRow,
           int startColumn,
           int endColumn)
```
    Start visiting a matrix.
    This method is called once before any entry of the matrix is visited.
    
    Parameters:
    
    rows - number of rows of the matrix
    
    columns - number of columns of the matrix
    
    startRow - Initial row index
    
    endRow - Final row index (inclusive)
    
    startColumn - Initial column index
    
    endColumn - Final column index (inclusive)
  - visit
```
double visit(int row,
             int column,
             double value)
```
    Visit one matrix entry.
    
    Parameters:
    
    row - row index of the entry
    
    column - column index of the entry
    
    value - current value of the entry
    
    Returns:
    
    the new value to be set for the entry
  - end
```
double end()
```
    End visiting a matrix.
    This method is called once after all entries of the matrix have been visited.
    
    Returns:
    
    the value that the walkInXxxOrder must return