Class DenseObjectMatrix3D
- All Implemented Interfaces:
Serializable
,Cloneable
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 invalid input: '<' slices; slice++) { for (int row=0; row invalid input: '<' rows; row++) { for (int column=0; column invalid input: '<' columns; column++) { matrix.setQuick(slice,row,column,someValue); } } }is quicker than
for (int column=0; column invalid input: '<' columns; column++) { for (int row=0; row invalid input: '<' rows; row++) { for (int slice=0; slice invalid input: '<' slices; slice++) { matrix.setQuick(slice,row,column,someValue); } } }
- Version:
- 1.0, 09/24/99
- See Also:
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Field Summary
FieldsFields inherited from class cern.colt.matrix.impl.AbstractMatrix3D
columns, columnStride, columnZero, rows, rowStride, rowZero, slices, sliceStride, sliceZero
Fields inherited from class cern.colt.matrix.impl.AbstractMatrix
isNoView
Fields inherited from class cern.colt.PersistentObject
serialVersionUID
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Constructor Summary
ConstructorsModifierConstructorDescriptionDenseObjectMatrix3D
(int slices, int rows, int columns) Constructs a matrix with a given number of slices, rows and columns.protected
DenseObjectMatrix3D
(int slices, int rows, int columns, Object[] elements, int sliceZero, int rowZero, int columnZero, int sliceStride, int rowStride, int columnStride) Constructs a view with the given parameters.DenseObjectMatrix3D
(Object[][][] values) Constructs a matrix with a copy of the given values. -
Method Summary
Modifier and TypeMethodDescriptionassign
(ObjectMatrix3D source) Replaces all cell values of the receiver with the values of another matrix.Sets all cells to the state specified by values.getQuick
(int slice, int row, int column) Returns the matrix cell value at coordinate [slice,row,column].protected boolean
haveSharedCellsRaw
(ObjectMatrix3D other) Returns true if both matrices share common cells.protected int
index
(int slice, int row, int column) Returns the position of the given coordinate within the (virtual or non-virtual) internal 1-dimensional array.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.protected ObjectMatrix2D
like2D
(int rows, int columns, int rowZero, int columnZero, int rowStride, int columnStride) Construct and returns a new 2-d matrix of the corresponding dynamic type, sharing the same cells.void
Sets the matrix cell at coordinate [slice,row,column] to the specified value.protected ObjectMatrix3D
viewSelectionLike
(int[] sliceOffsets, int[] rowOffsets, int[] columnOffsets) Construct and returns a new selection view.Methods inherited from class cern.colt.matrix.ObjectMatrix3D
aggregate, aggregate, assign, assign, assign, cardinality, copy, equals, equals, get, getContent, getNonZeros, haveSharedCells, like, set, toArray, toString, view, viewColumn, viewColumnFlip, viewDice, viewPart, viewRow, viewRowFlip, viewSelection, viewSelection, viewSlice, viewSliceFlip, viewSorted, viewStrides
Methods inherited from class cern.colt.matrix.impl.AbstractMatrix3D
_columnOffset, _columnRank, _rowOffset, _rowRank, _sliceOffset, _sliceRank, checkBox, checkColumn, checkColumnIndexes, checkRow, checkRowIndexes, checkShape, checkShape, checkSlice, checkSliceIndexes, columns, rows, setUp, setUp, shape, size, slices, toStringShort, vColumnFlip, vDice, vPart, vRowFlip, vSliceFlip, vStrides
Methods inherited from class cern.colt.matrix.impl.AbstractMatrix
ensureCapacity, isView, trimToSize
Methods inherited from class cern.colt.PersistentObject
clone
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Field Details
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elements
The elements of this matrix. elements are stored in slice major, then row major, then column major, in order of significance, i.e. index==slice*sliceStride+ row*rowStride + column*columnStride i.e. {slice0 row0..m}, {slice1 row0..m}, ..., {sliceN row0..m} with each row storead as {row0 column0..m}, {row1 column0..m}, ..., {rown column0..m}
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Constructor Details
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DenseObjectMatrix3D
Constructs a matrix with a copy of the given values. values is required to have the form values[slice][row][column] and have exactly the same number of rows in in every slice and exactly the same number of columns in in every row.The values are copied. So subsequent changes in values are not reflected in the matrix, and vice-versa.
- Parameters:
values
- The values to be filled into the new matrix.- Throws:
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.
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DenseObjectMatrix3D
public DenseObjectMatrix3D(int slices, int rows, int columns) Constructs a matrix with a given number of slices, rows and columns. All entries are initially 0.- Parameters:
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.- Throws:
IllegalArgumentException
- if (Object)slices*columns*rows > Integer.MAX_VALUE.IllegalArgumentException
- if slicesinvalid input: '<'0 || rowsinvalid input: '<'0 || columnsinvalid input: '<'0.
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DenseObjectMatrix3D
protected DenseObjectMatrix3D(int slices, int rows, int columns, Object[] elements, int sliceZero, int rowZero, int columnZero, int sliceStride, int rowStride, int columnStride) Constructs a view with the given parameters.- Parameters:
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.elements
- the cells.sliceZero
- the position of the first element.rowZero
- the position of the first element.columnZero
- the position of the first element.sliceStride
- the number of elements between two slices, i.e. index(k+1,i,j)-index(k,i,j).rowStride
- the number of elements between two rows, i.e. index(k,i+1,j)-index(k,i,j).columnnStride
- the number of elements between two columns, i.e. index(k,i,j+1)-index(k,i,j).- Throws:
IllegalArgumentException
- if (Object)slices*columns*rows > Integer.MAX_VALUE.IllegalArgumentException
- if slicesinvalid input: '<'0 || rowsinvalid input: '<'0 || columnsinvalid input: '<'0.
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Method Details
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assign
Sets all cells to the state specified by values. values is required to have the form values[slice][row][column] and have exactly the same number of slices, rows and columns as the receiver.The values are copied. So subsequent changes in values are not reflected in the matrix, and vice-versa.
- Overrides:
assign
in classObjectMatrix3D
- Parameters:
values
- the values to be filled into the cells.- Returns:
- this (for convenience only).
- Throws:
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().
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assign
Replaces all cell values of the receiver with the values of another matrix. Both matrices must have the same number of slices, rows and columns. If both matrices share the same cells (as is the case if they are views derived from the same matrix) and intersect in an ambiguous way, then replaces as if using an intermediate auxiliary deep copy of other.- Overrides:
assign
in classObjectMatrix3D
- Parameters:
source
- the source matrix to copy from (may be identical to the receiver).- Returns:
- this (for convenience only).
- Throws:
IllegalArgumentException
- if slices() != source.slices() || rows() != source.rows() || columns() != source.columns()
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getQuick
Returns the matrix cell value at coordinate [slice,row,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().
- Specified by:
getQuick
in classObjectMatrix3D
- Parameters:
slice
- the index of the slice-coordinate.row
- the index of the row-coordinate.column
- the index of the column-coordinate.- Returns:
- the value at the specified coordinate.
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index
protected int index(int slice, int row, int column) Returns the position of the given coordinate within the (virtual or non-virtual) internal 1-dimensional array.- Overrides:
index
in classAbstractMatrix3D
- Parameters:
slice
- the index of the slice-coordinate.row
- the index of the row-coordinate.column
- the index of the third-coordinate.
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like
Construct and returns a new empty matrix of the same dynamic type as the receiver, having the specified number of slices, rows and columns. For example, if the receiver is an instance of type DenseObjectMatrix3D the new matrix must also be of type DenseObjectMatrix3D, if the receiver is an instance of type SparseObjectMatrix3D the new matrix must also be of type SparseObjectMatrix3D, etc. In general, the new matrix should have internal parametrization as similar as possible.- Specified by:
like
in classObjectMatrix3D
- Parameters:
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.- Returns:
- a new empty matrix of the same dynamic type.
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like2D
protected ObjectMatrix2D like2D(int rows, int columns, int rowZero, int columnZero, int rowStride, int columnStride) Construct and returns a new 2-d matrix of the corresponding dynamic type, sharing the same cells. For example, if the receiver is an instance of type DenseObjectMatrix3D the new matrix must also be of type DenseObjectMatrix2D, if the receiver is an instance of type SparseObjectMatrix3D the new matrix must also be of type SparseObjectMatrix2D, etc.- Specified by:
like2D
in classObjectMatrix3D
- Parameters:
rows
- the number of rows the matrix shall have.columns
- the number of columns the matrix shall have.rowZero
- the position of the first element.columnZero
- the position of the first element.rowStride
- the number of elements between two rows, i.e. index(i+1,j)-index(i,j).columnStride
- the number of elements between two columns, i.e. index(i,j+1)-index(i,j).- Returns:
- a new matrix of the corresponding dynamic type.
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setQuick
Sets the matrix cell at coordinate [slice,row,column] to the specified 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().
- Specified by:
setQuick
in classObjectMatrix3D
- Parameters:
slice
- 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.
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viewSelectionLike
protected ObjectMatrix3D viewSelectionLike(int[] sliceOffsets, int[] rowOffsets, int[] columnOffsets) Construct and returns a new selection view.- Specified by:
viewSelectionLike
in classObjectMatrix3D
- Parameters:
sliceOffsets
- the offsets of the visible elements.rowOffsets
- the offsets of the visible elements.columnOffsets
- the offsets of the visible elements.- Returns:
- a new view.
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