public class DiagonalDoubleMatrix2D extends WrapperDoubleMatrix2D
| Constructor and Description |
|---|
DiagonalDoubleMatrix2D(double[][] values,
int dindex)
Constructs a matrix with a copy of the given values.
|
DiagonalDoubleMatrix2D(int rows,
int columns,
int dindex)
Constructs a matrix with a given number of rows and columns.
|
| Modifier and Type | Method and Description |
|---|---|
DoubleMatrix2D |
assign(double value)
Sets all cells to the state specified by value.
|
DoubleMatrix2D |
assign(double[] values)
Sets all cells to the state specified by values.
|
DoubleMatrix2D |
assign(double[][] values)
Sets all cells to the state specified by values.
|
DoubleMatrix2D |
assign(DoubleFunction function)
Assigns the result of a function to each cell;
x[row,col] = function(x[row,col]).
|
DoubleMatrix2D |
assign(DoubleMatrix2D source)
Replaces all cell values of the receiver with the values of another
matrix.
|
DoubleMatrix2D |
assign(DoubleMatrix2D y,
DoubleDoubleFunction 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
|
double[] |
elements()
Returns the elements of this matrix.
|
boolean |
equals(double value)
Returns whether all cells are equal to the given value.
|
boolean |
equals(Object obj)
Compares this object against the specified object.
|
DoubleMatrix2D |
forEachNonZero(IntIntDoubleFunction function)
Assigns the result of a function to each non-zero cell;
x[row,col] = function(x[row,col]).
|
double[] |
getMaxLocation()
Return the maximum value of this matrix together with its location
|
double[] |
getMinLocation()
Return the minimum value of this matrix together with its location
|
double |
getQuick(int row,
int column)
Returns the matrix cell value at coordinate [row,column].
|
DoubleMatrix2D |
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.
|
DoubleMatrix1D |
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,
double value)
Sets the matrix cell at coordinate [row,column] to the specified
value.
|
DoubleMatrix1D |
zMult(DoubleMatrix1D y,
DoubleMatrix1D z,
double alpha,
double beta,
boolean transposeA)
Linear algebraic matrix-vector multiplication;
z = alpha * A * y + beta*z.
|
assign, dct2, dctColumns, dctRows, dht2, dhtColumns, dhtRows, dst2, dstColumns, dstRows, fft2, getFft2, getFftColumns, getFftRows, getIfft2, getIfftColumns, getIfftRows, idct2, idctColumns, idctRows, idht2, idhtColumns, idhtRows, idst2, idstColumns, idstRows, ifft2, vectorize, viewColumn, viewColumnFlip, viewDice, viewPart, viewRow, viewRowFlip, viewSelection, viewStridesaggregate, aggregate, aggregate, aggregate, assign, assign, assign, copy, get, getNegativeValues, getNonZeros, getPositiveValues, like, normalize, set, toArray, toString, viewSelection, viewSelection, viewSorted, zAssign8Neighbors, zMult, zMult, zMult, zSumcheckShape, checkShape, columns, columnStride, index, rows, rowStride, size, toStringShortensureCapacity, isView, trimToSizeclonepublic DiagonalDoubleMatrix2D(double[][] 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 DiagonalDoubleMatrix2D(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 (double)size > Integer.MAX_VALUE.public DoubleMatrix2D assign(DoubleFunction function)
DoubleMatrix2DExample:
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 -0.350783
For further examples, see the package doc.assign in class DoubleMatrix2Dfunction - a function object taking as argument the current cell's value.DoubleFunctionspublic DoubleMatrix2D assign(double value)
DoubleMatrix2Dassign in class DoubleMatrix2Dvalue - the value to be filled into the cells.public DoubleMatrix2D assign(double[] values)
DoubleMatrix2DThe values are copied. So subsequent changes in values are not reflected in the matrix, and vice-versa.
assign in class WrapperDoubleMatrix2Dvalues - the values to be filled into the cells.public DoubleMatrix2D assign(double[][] values)
DoubleMatrix2DThe values are copied. So subsequent changes in values are not reflected in the matrix, and vice-versa.
assign in class DoubleMatrix2Dvalues - the values to be filled into the cells.public DoubleMatrix2D assign(DoubleMatrix2D source)
DoubleMatrix2Dassign in class DoubleMatrix2Dsource - the source matrix to copy from (may be identical to the
receiver).public DoubleMatrix2D assign(DoubleMatrix2D y, DoubleDoubleFunction function)
DoubleMatrix2DExample:
// 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
16 729
For further examples, see the package doc.assign in class WrapperDoubleMatrix2Dy - 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,DoubleFunctionspublic int cardinality()
DoubleMatrix2Dcardinality in class DoubleMatrix2Dpublic double[] elements()
DoubleMatrix2Delements in class WrapperDoubleMatrix2Dpublic boolean equals(double value)
DoubleMatrix2Dequals in class WrapperDoubleMatrix2Dvalue - the value to test against.public boolean equals(Object obj)
DoubleMatrix2Dtrue if and only if the argument is not null
and is at least a DoubleMatrix2D 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 WrapperDoubleMatrix2Dobj - the object to compare with.true if the objects are the same; false
otherwise.public DoubleMatrix2D forEachNonZero(IntIntDoubleFunction function)
DoubleMatrix2DforEachNonZero in class DoubleMatrix2Dfunction - a function object taking as argument the current non-zero
cell's row, column and value.public int diagonalLength()
public int diagonalIndex()
public double[] getMaxLocation()
DoubleMatrix2DgetMaxLocation in class DoubleMatrix2Dpublic double[] getMinLocation()
DoubleMatrix2DgetMinLocation in class DoubleMatrix2Dpublic double getQuick(int row,
int column)
DoubleMatrix2DProvided 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 WrapperDoubleMatrix2Drow - the index of the row-coordinate.column - the index of the column-coordinate.public DoubleMatrix2D like(int rows, int columns)
DoubleMatrix2Dlike in class WrapperDoubleMatrix2Drows - the number of rows the matrix shall have.columns - the number of columns the matrix shall have.public DoubleMatrix1D like1D(int size)
DoubleMatrix2Dlike1D in class WrapperDoubleMatrix2Dsize - the number of cells the matrix shall have.public void setQuick(int row,
int column,
double value)
DoubleMatrix2DProvided 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 WrapperDoubleMatrix2Drow - the index of the row-coordinate.column - the index of the column-coordinate.value - the value to be filled into the specified cell.public DoubleMatrix1D zMult(DoubleMatrix1D y, DoubleMatrix1D z, double alpha, double beta, boolean transposeA)
DoubleMatrix2DzMult in class DoubleMatrix2Dy - 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