public class DiagonalIntMatrix2D extends WrapperIntMatrix2D
| Constructor and Description |
|---|
DiagonalIntMatrix2D(int[][] values,
int dindex)
Constructs a matrix with a copy of the given values.
|
DiagonalIntMatrix2D(int rows,
int columns,
int dindex)
Constructs a matrix with a given number of rows and columns.
|
| Modifier and Type | Method and Description |
|---|---|
IntMatrix2D |
assign(int value)
Sets all cells to the state specified by value.
|
IntMatrix2D |
assign(int[] values)
Sets all cells to the state specified by values.
|
IntMatrix2D |
assign(int[][] values)
Sets all cells to the state specified by values.
|
IntMatrix2D |
assign(IntFunction function)
Assigns the result of a function to each cell;
x[row,col] = function(x[row,col]).
|
IntMatrix2D |
assign(IntMatrix2D source)
Replaces all cell values of the receiver with the values of another
matrix.
|
IntMatrix2D |
assign(IntMatrix2D y,
IntIntFunction function)
Assigns the result of a function to each cell;
x[row,col] = function(x[row,col],y[row,col]).
|
int |
cardinality()
Returns the number of cells having non-zero values; ignores tolerance.
|
int |
diagonalIndex()
Returns the index of the diagonal
|
int |
diagonalLength()
Returns the length of the diagonal
|
int[] |
elements()
Returns the elements of this matrix.
|
boolean |
equals(int value)
Returns whether all cells are equal to the given value.
|
boolean |
equals(Object obj)
Compares this object against the specified object.
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IntMatrix2D |
forEachNonZero(IntIntIntFunction function)
Assigns the result of a function to each non-zero cell;
x[row,col] = function(x[row,col]).
|
int[] |
getMaxLocation()
Return the maximum value of this matrix together with its location
|
int[] |
getMinLocation()
Return the minimum value of this matrix together with its location
|
int |
getQuick(int row,
int column)
Returns the matrix cell value at coordinate [row,column].
|
IntMatrix2D |
like(int rows,
int columns)
Construct and returns a new empty matrix of the same dynamic type
as the receiver, having the specified number of rows and columns.
|
IntMatrix1D |
like1D(int size)
Construct and returns a new 1-d matrix of the corresponding dynamic
type, entirelly independent of the receiver.
|
void |
setQuick(int row,
int column,
int value)
Sets the matrix cell at coordinate [row,column] to the specified
value.
|
IntMatrix1D |
zMult(IntMatrix1D y,
IntMatrix1D z,
int alpha,
int beta,
boolean transposeA)
Linear algebraic matrix-vector multiplication;
z = alpha * A * y + beta*z.
|
vectorize, viewColumn, viewColumnFlip, viewDice, viewPart, viewRow, viewRowFlip, viewSelection, viewStridesaggregate, aggregate, aggregate, aggregate, assign, assign, assign, copy, get, getNegativeValues, getNonZeros, getPositiveValues, like, set, toArray, toString, viewSelection, viewSelection, viewSorted, zMult, zMult, zMult, zSumcheckShape, checkShape, columns, columnStride, index, rows, rowStride, size, toStringShortensureCapacity, isView, trimToSizeclonepublic DiagonalIntMatrix2D(int[][] values,
int dindex)
The values are copied. So subsequent changes in values are not reflected in the matrix, and vice-versa.
values - The values to be filled into the new matrix.dindex - index of the diagonal.IllegalArgumentException - if
for any 1 <= row < values.length: values[row].length != values[row-1].length || index < -rows+1 || index > columns - 1
.public DiagonalIntMatrix2D(int rows,
int columns,
int dindex)
rows - the number of rows the matrix shall have.columns - the number of columns the matrix shall have.dindex - index of the diagonal.IllegalArgumentException - if size<0 (int)size > Integer.MAX_VALUE.public IntMatrix2D assign(IntFunction function)
IntMatrix2DExample:
matrix = 2 x 2 matrix 0.5 1.5 2.5 3.5 // change each cell to its sine matrix.assign(cern.jet.math.Functions.sin); --> 2 x 2 matrix 0.479426 0.997495 0.598472 -0.350783For further examples, see the package doc.
assign in class IntMatrix2Dfunction - a function object taking as argument the current cell's value.IntFunctionspublic IntMatrix2D assign(int value)
IntMatrix2Dassign in class IntMatrix2Dvalue - the value to be filled into the cells.public IntMatrix2D assign(int[] values)
IntMatrix2DThe values are copied. So subsequent changes in values are not reflected in the matrix, and vice-versa.
assign in class WrapperIntMatrix2Dvalues - the values to be filled into the cells.public IntMatrix2D assign(int[][] values)
IntMatrix2DThe values are copied. So subsequent changes in values are not reflected in the matrix, and vice-versa.
assign in class IntMatrix2Dvalues - the values to be filled into the cells.public IntMatrix2D assign(IntMatrix2D source)
IntMatrix2Dassign in class IntMatrix2Dsource - the source matrix to copy from (may be identical to the
receiver).public IntMatrix2D assign(IntMatrix2D y, IntIntFunction function)
IntMatrix2DExample:
// assign x[row,col] = x[row,col]<sup>y[row,col]</sup> m1 = 2 x 2 matrix 0 1 2 3 m2 = 2 x 2 matrix 0 2 4 6 m1.assign(m2, cern.jet.math.Functions.pow); --> m1 == 2 x 2 matrix 1 1 16 729For further examples, see the package doc.
assign in class WrapperIntMatrix2Dy - the secondary matrix to operate on.function - a function object taking as first argument the current cell's
value of this, and as second argument the current
cell's value of y,IntFunctionspublic int cardinality()
IntMatrix2Dcardinality in class IntMatrix2Dpublic int[] elements()
IntMatrix2Delements in class WrapperIntMatrix2Dpublic boolean equals(int value)
IntMatrix2Dequals in class WrapperIntMatrix2Dvalue - the value to test against.public boolean equals(Object obj)
IntMatrix2Dtrue if and only if the argument is not null
and is at least a IntMatrix2D object that has the same
number of columns and rows as the receiver and has exactly the same
values at the same coordinates.equals in class WrapperIntMatrix2Dobj - the object to compare with.true if the objects are the same; false
otherwise.public IntMatrix2D forEachNonZero(IntIntIntFunction function)
IntMatrix2DforEachNonZero in class IntMatrix2Dfunction - a function object taking as argument the current non-zero
cell's row, column and value.public int diagonalLength()
public int diagonalIndex()
public int[] getMaxLocation()
IntMatrix2DgetMaxLocation in class IntMatrix2Dpublic int[] getMinLocation()
IntMatrix2DgetMinLocation in class IntMatrix2Dpublic int getQuick(int row,
int column)
IntMatrix2DProvided with invalid parameters this method may return invalid objects without throwing any exception. You should only use this method when you are absolutely sure that the coordinate is within bounds. Precondition (unchecked): 0 <= column < columns() && 0 <= row < rows().
getQuick in class WrapperIntMatrix2Drow - the index of the row-coordinate.column - the index of the column-coordinate.public IntMatrix2D like(int rows, int columns)
IntMatrix2Dlike in class WrapperIntMatrix2Drows - the number of rows the matrix shall have.columns - the number of columns the matrix shall have.public IntMatrix1D like1D(int size)
IntMatrix2Dlike1D in class WrapperIntMatrix2Dsize - the number of cells the matrix shall have.public void setQuick(int row,
int column,
int value)
IntMatrix2DProvided with invalid parameters this method may access illegal indexes without throwing any exception. You should only use this method when you are absolutely sure that the coordinate is within bounds. Precondition (unchecked): 0 <= column < columns() && 0 <= row < rows().
setQuick in class WrapperIntMatrix2Drow - the index of the row-coordinate.column - the index of the column-coordinate.value - the value to be filled into the specified cell.public IntMatrix1D zMult(IntMatrix1D y, IntMatrix1D z, int alpha, int beta, boolean transposeA)
IntMatrix2DzMult in class IntMatrix2Dy - the source vector.z - the vector where results are to be stored. Set this parameter
to null to indicate that a new result vector shall be
constructed.Jump to the Parallel Colt Homepage