public class DenseObjectMatrix3D extends ObjectMatrix3D
Implementation:
Internally holds one single contigous one-dimensional array, addressed in (in decreasing order of significance): slice major, row major, column major. Note that this implementation is not synchronized.
Memory requirements:
memory [bytes] = 8*slices()*rows()*columns(). Thus, a 100*100*100 matrix uses 8 MB.
Time complexity:
O(1) (i.e. constant time) for the basic operations get, getQuick, set, setQuick and size,
Applications demanding utmost speed can exploit knowledge about the internal addressing. Setting/getting values in a loop slice-by-slice, row-by-row, column-by-column is quicker than, for example, column-by-column, row-by-row, slice-by-slice. Thus
for (int slice = 0; slice < slices; slice++) {
for (int row = 0; row < rows; row++) {
for (int column = 0; column < columns; column++) {
matrix.setQuick(slice, row, column, someValue);
}
}
}
is quicker than
for (int column = 0; column < columns; column++) {
for (int row = 0; row < rows; row++) {
for (int slice = 0; slice < slices; slice++) {
matrix.setQuick(slice, row, column, someValue);
}
}
}
| Constructor and Description |
|---|
DenseObjectMatrix3D(int slices,
int rows,
int columns)
Constructs a matrix with a given number of slices, rows and columns.
|
DenseObjectMatrix3D(Object[][][] values)
Constructs a matrix with a copy of the given values.
|
| Modifier and Type | Method and Description |
|---|---|
Object |
aggregate(ObjectMatrix3D other,
ObjectObjectFunction aggr,
ObjectObjectFunction f)
Applies a function to each corresponding cell of two matrices and
aggregates the results.
|
Object |
aggregate(ObjectObjectFunction aggr,
ObjectFunction f)
Applies a function to each cell and aggregates the results.
|
Object |
aggregate(ObjectObjectFunction aggr,
ObjectFunction f,
IntArrayList sliceList,
IntArrayList rowList,
IntArrayList columnList)
Applies a function to all cells with a given indexes and aggregates the
results.
|
Object |
aggregate(ObjectObjectFunction aggr,
ObjectFunction f,
ObjectProcedure cond)
Applies a function to each cell that satisfies a condition and aggregates
the results.
|
ObjectMatrix3D |
assign(Object value)
Sets all cells to the state specified by value.
|
ObjectMatrix3D |
assign(Object[] values)
Sets all cells to the state specified by values.
|
ObjectMatrix3D |
assign(Object[][][] values)
Sets all cells to the state specified by values.
|
ObjectMatrix3D |
assign(ObjectFunction function)
Assigns the result of a function to each cell;
x[slice,row,col] = function(x[slice,row,col]).
|
ObjectMatrix3D |
assign(ObjectMatrix3D source)
Replaces all cell values of the receiver with the values of another
matrix.
|
ObjectMatrix3D |
assign(ObjectMatrix3D y,
ObjectObjectFunction function)
Assigns the result of a function to each cell;
x[row,col] = function(x[row,col],y[row,col]).
|
ObjectMatrix3D |
assign(ObjectMatrix3D y,
ObjectObjectFunction function,
IntArrayList sliceList,
IntArrayList rowList,
IntArrayList columnList)
Assigns the result of a function to all cells with a given indexes
|
ObjectMatrix3D |
assign(ObjectProcedure cond,
Object value)
Assigns a value to all cells that satisfy a condition.
|
ObjectMatrix3D |
assign(ObjectProcedure cond,
ObjectFunction f)
Assigns the result of a function to all cells that satisfy a condition.
|
Object[] |
elements()
Returns the elements of this matrix.
|
Object |
getQuick(int slice,
int row,
int column)
Returns the matrix cell value at coordinate [slice,row,column].
|
long |
index(int slice,
int row,
int column)
Returns the position of the given coordinate within the (virtual or
non-virtual) internal 1-dimensional array.
|
ObjectMatrix3D |
like(int slices,
int rows,
int columns)
Construct and returns a new empty matrix of the same dynamic type
as the receiver, having the specified number of slices, rows and columns.
|
ObjectMatrix2D |
like2D(int rows,
int columns)
Construct and returns a new 2-d matrix of the corresponding dynamic
type, sharing the same cells.
|
void |
setQuick(int slice,
int row,
int column,
Object value)
Sets the matrix cell at coordinate [slice,row,column] to the
specified value.
|
ObjectMatrix1D |
vectorize()
Returns a vector obtained by stacking the columns of the matrix on top of
one another.
|
cardinality, copy, equals, equals, get, getNonZeros, like, set, toArray, toString, viewColumn, viewColumnFlip, viewDice, viewPart, viewRow, viewRowFlip, viewSelection, viewSelection, viewSlice, viewSliceFlip, viewSorted, viewStridescheckShape, checkShape, columns, columnStride, rows, rowStride, size, slices, sliceStride, toStringShortensureCapacity, isView, trimToSizeclonepublic DenseObjectMatrix3D(Object[][][] values)
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.IllegalArgumentException - if
for any 1 <= slice < values.length: values[slice].length != values[slice-1].length
.IllegalArgumentException - if
for any 1 <= row < values[0].length: values[slice][row].length != values[slice][row-1].length
.public DenseObjectMatrix3D(int slices,
int rows,
int columns)
slices - the number of slices the matrix shall have.rows - the number of rows the matrix shall have.columns - the number of columns the matrix shall have.IllegalArgumentException - if (Object)slices*columns*rows > Integer.MAX_VALUE.IllegalArgumentException - if slices<0 || rows<0 || columns<0.public Object aggregate(ObjectObjectFunction aggr, ObjectFunction f)
ObjectMatrix3DExample:
cern.jet.math.Functions F = cern.jet.math.Functions.functions;
2 x 2 x 2 matrix
0 1
2 3
4 5
6 7
// Sum( x[slice,row,col]*x[slice,row,col] )
matrix.aggregate(F.plus,F.square);
--> 140
For further examples, see the package doc.aggregate in class ObjectMatrix3Daggr - an aggregation function taking as first argument the current
aggregation and as second argument the transformed current
cell value.f - a function transforming the current cell value.DoubleFunctionspublic Object aggregate(ObjectObjectFunction aggr, ObjectFunction f, ObjectProcedure cond)
ObjectMatrix3Daggregate in class ObjectMatrix3Daggr - an aggregation function taking as first argument the current
aggregation and as second argument the transformed current
cell value.f - a function transforming the current cell value.cond - a condition.public Object aggregate(ObjectObjectFunction aggr, ObjectFunction f, IntArrayList sliceList, IntArrayList rowList, IntArrayList columnList)
ObjectMatrix3Daggregate in class ObjectMatrix3Daggr - an aggregation function taking as first argument the current
aggregation and as second argument the transformed current
cell value.f - a function transforming the current cell value.sliceList - slice indexes.rowList - row indexes.columnList - column indexes.public Object aggregate(ObjectMatrix3D other, ObjectObjectFunction aggr, ObjectObjectFunction f)
ObjectMatrix3DExample:
cern.jet.math.Functions F = cern.jet.math.Functions.functions;
x = 2 x 2 x 2 matrix
0 1
2 3
4 5
6 7
y = 2 x 2 x 2 matrix
0 1
2 3
4 5
6 7
// Sum( x[slice,row,col] * y[slice,row,col] )
x.aggregate(y, F.plus, F.mult);
--> 140
// Sum( (x[slice,row,col] + y[slice,row,col])ˆ2 )
x.aggregate(y, F.plus, F.chain(F.square,F.plus));
--> 560
For further examples, see the package doc.aggregate in class ObjectMatrix3Daggr - an aggregation function taking as first argument the current
aggregation and as second argument the transformed current
cell values.f - a function transforming the current cell values.DoubleFunctionspublic ObjectMatrix3D assign(Object[][][] values)
The values are copied. So subsequent changes in values are not reflected in the matrix, and vice-versa.
assign in class ObjectMatrix3Dvalues - the values to be filled into the cells.IllegalArgumentException - if
values.length != slices() || for any 0 <= slice < slices(): values[slice].length != rows()
.IllegalArgumentException - if
for any 0 <= column < columns(): values[slice][row].length != columns()
.public ObjectMatrix3D assign(Object[] values)
ObjectMatrix3DThe values are copied. So subsequent changes in values are not reflected in the matrix, and vice-versa.
assign in class ObjectMatrix3Dvalues - the values to be filled into the cells.public ObjectMatrix3D assign(Object value)
ObjectMatrix3Dassign in class ObjectMatrix3Dvalue - the value to be filled into the cells.public ObjectMatrix3D assign(ObjectProcedure cond, ObjectFunction f)
ObjectMatrix3Dassign in class ObjectMatrix3Dcond - a condition.f - a function object.public ObjectMatrix3D assign(ObjectProcedure cond, Object value)
ObjectMatrix3Dassign in class ObjectMatrix3Dcond - a condition.value - a value.public ObjectMatrix3D assign(ObjectMatrix3D source)
assign in class ObjectMatrix3Dsource - the source matrix to copy from (may be identical to the
receiver).IllegalArgumentException - if
slices() != source.slices() || rows() != source.rows() || columns() != source.columns()public ObjectMatrix3D assign(ObjectFunction function)
ObjectMatrix3DExample:
matrix = 1 x 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);
-->
1 x 2 x 2 matrix
0.479426 0.997495
0.598472 -0.350783
For further examples, see the package doc.assign in class ObjectMatrix3Dfunction - a function object taking as argument the current cell's value.DoubleFunctionspublic ObjectMatrix3D assign(ObjectMatrix3D y, ObjectObjectFunction function)
ObjectMatrix3DExample:
// assign x[row,col] = x[row,col]<sup>y[row,col]</sup>
m1 = 1 x 2 x 2 matrix
0 1
2 3
m2 = 1 x 2 x 2 matrix
0 2
4 6
m1.assign(m2, cern.jet.math.Functions.pow);
-->
m1 == 1 x 2 x 2 matrix
1 1
16 729
For further examples, see the package doc.assign in class ObjectMatrix3Dy - 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 ObjectMatrix3D assign(ObjectMatrix3D y, ObjectObjectFunction function, IntArrayList sliceList, IntArrayList rowList, IntArrayList columnList)
ObjectMatrix3Dassign in class ObjectMatrix3Dy - 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, *sliceList - slice indexes.rowList - row indexes.columnList - column indexes.public Object[] elements()
ObjectMatrix3Delements in class ObjectMatrix3Dpublic Object getQuick(int slice, int row, int column)
Provided 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): slice<0 || slice>=slices() || row<0 || row>=rows() || column<0 || column>=column().
getQuick in class ObjectMatrix3Dslice - the index of the slice-coordinate.row - the index of the row-coordinate.column - the index of the column-coordinate.public long index(int slice,
int row,
int column)
index in class AbstractMatrix3Dslice - the index of the slice-coordinate.row - the index of the row-coordinate.column - the index of the third-coordinate.public ObjectMatrix3D like(int slices, int rows, int columns)
like in class ObjectMatrix3Dslices - the number of slices the matrix shall have.rows - the number of rows the matrix shall have.columns - the number of columns the matrix shall have.public void setQuick(int slice,
int row,
int column,
Object value)
Provided 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): slice<0 || slice>=slices() || row<0 || row>=rows() || column<0 || column>=column().
setQuick in class ObjectMatrix3Dslice - the index of the slice-coordinate.row - the index of the row-coordinate.column - the index of the column-coordinate.value - the value to be filled into the specified cell.public ObjectMatrix1D vectorize()
ObjectMatrix3Dvectorize in class ObjectMatrix3Dpublic ObjectMatrix2D like2D(int rows, int columns)
ObjectMatrix3Dlike2D in class ObjectMatrix3Drows - the number of rows the matrix shall have.columns - the number of columns the matrix shall have.Jump to the Parallel Colt Homepage