public class DMatrixRBlock extends DMatrixD1
Modifier and Type | Field and Description |
---|---|
int |
blockLength |
Constructor and Description |
---|
DMatrixRBlock() |
DMatrixRBlock(int numRows,
int numCols) |
DMatrixRBlock(int numRows,
int numCols,
int blockLength) |
Modifier and Type | Method and Description |
---|---|
DMatrixRBlock |
copy()
Creates an exact copy of the matrix
|
<T extends Matrix> |
createLike()
Creates a new matrix with the same shape as this matrix
|
double |
get(int row,
int col)
Returns the value of value of the specified matrix element.
|
double[] |
getData()
Used to get a reference to the internal data.
|
int |
getIndex(int row,
int col)
Returns the internal array index for the specified row and column.
|
int |
getNumCols()
Returns the number of columns in this matrix.
|
int |
getNumElements()
Returns the number of elements in this matrix, which is the number of rows
times the number of columns.
|
int |
getNumRows()
Returns the number of rows in this matrix.
|
MatrixType |
getType()
Returns the type of matrix
|
void |
print()
Prints the matrix to standard out.
|
void |
reshape(int numRows,
int numCols,
boolean saveValues)
Changes the number of rows and columns in the matrix, allowing its size to grow or shrink.
|
void |
reshape(int numRows,
int numCols,
int blockLength,
boolean saveValues) |
void |
set(DMatrixRBlock A) |
void |
set(int row,
int col,
double val)
Sets the value of the specified matrix element.
|
void |
set(Matrix original)
Sets this matrix to be identical to the 'original' matrix passed in.
|
double |
unsafe_get(int row,
int col)
Same as
DMatrix.get(int, int) but does not perform bounds check on input parameters. |
void |
unsafe_set(int row,
int col,
double val)
Same as
DMatrix.set(int, int, double) but does not perform bounds check on input parameters. |
static DMatrixRBlock |
wrap(double[] data,
int numRows,
int numCols,
int blockLength) |
public DMatrixRBlock(int numRows, int numCols, int blockLength)
public DMatrixRBlock(int numRows, int numCols)
public DMatrixRBlock()
public void set(DMatrixRBlock A)
public static DMatrixRBlock wrap(double[] data, int numRows, int numCols, int blockLength)
public double[] getData()
DMatrixD1
public void reshape(int numRows, int numCols, boolean saveValues)
DMatrixD1
Changes the number of rows and columns in the matrix, allowing its size to grow or shrink. If the saveValues flag is set to true, then the previous values will be maintained, but reassigned to new elements in a row-major ordering. If saveValues is false values will only be maintained when the requested size is less than or equal to the internal array size. The primary use for this function is to encourage data reuse and avoid unnecessarily declaring and initialization of new memory.
Examples:
[ 1 2 ; 3 4 ] → reshape( 2 , 3 , true ) = [ 1 2 3 ; 4 0 0 ]
[ 1 2 ; 3 4 ] → reshape( 1 , 2 , true ) = [ 1 2 ]
[ 1 2 ; 3 4 ] → reshape( 1 , 2 , false ) = [ 1 2 ]
[ 1 2 ; 3 4 ] → reshape( 2 , 3 , false ) = [ 0 0 0 ; 0 0 0 ]
public void reshape(int numRows, int numCols, int blockLength, boolean saveValues)
public int getIndex(int row, int col)
DMatrixD1
public double get(int row, int col)
DMatrix
row
- Matrix element's row index..col
- Matrix element's column index.public double unsafe_get(int row, int col)
DMatrix
DMatrix.get(int, int)
but does not perform bounds check on input parameters. This results in about a 25%
speed increase but potentially sacrifices stability and makes it more difficult to track down simple errors.
It is not recommended that this function be used, except in highly optimized code where the bounds are
implicitly being checked.row
- Matrix element's row index..col
- Matrix element's column index.public void set(int row, int col, double val)
DMatrix
row
- Matrix element's row index..col
- Matrix element's column index.val
- The element's new value.public void unsafe_set(int row, int col, double val)
DMatrix
DMatrix.set(int, int, double)
but does not perform bounds check on input parameters. This results in about a 25%
speed increase but potentially sacrifices stability and makes it more difficult to track down simple errors.
It is not recommended that this function be used, except in highly optimized code where the bounds are
implicitly being checked.row
- Matrix element's row index..col
- Matrix element's column index.val
- The element's new value.public int getNumRows()
DMatrixD1
getNumRows
in interface Matrix
getNumRows
in class DMatrixD1
public int getNumCols()
DMatrixD1
getNumCols
in interface Matrix
getNumCols
in class DMatrixD1
public <T extends Matrix> T createLike()
Matrix
public void set(Matrix original)
Matrix
public int getNumElements()
DMatrix
public void print()
Matrix
public DMatrixRBlock copy()
Matrix
public MatrixType getType()
Matrix