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java.lang.Objectcern.colt.PersistentObject
cern.colt.matrix.AbstractMatrix
cern.colt.matrix.AbstractMatrix2D
cern.colt.matrix.tlong.LongMatrix2D
cern.colt.matrix.tlong.impl.WrapperLongMatrix2D
cern.colt.matrix.tlong.impl.SparseCCMLongMatrix2D
public class SparseCCMLongMatrix2D
Sparse column-compressed-modified 2-d matrix holding long elements. Each column is stored as SparseLongMatrix1D.
Constructor Summary | |
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SparseCCMLongMatrix2D(int rows,
int columns)
Constructs a matrix with a given number of rows and columns. |
Method Summary | |
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SparseLongMatrix1D[] |
elements()
Returns the elements of this matrix. |
long |
getQuick(int row,
int column)
Returns the matrix cell value at coordinate [row,column]. |
LongMatrix2D |
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. |
void |
setQuick(int row,
int column,
long value)
Sets the matrix cell at coordinate [row,column] to the specified value. |
void |
trimToSize()
Releases any superfluous internal memory. |
SparseLongMatrix1D |
viewColumn(int column)
Constructs and returns a new slice view representing the rows of the given column. |
Methods inherited from class cern.colt.matrix.tlong.impl.WrapperLongMatrix2D |
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assign, assign, assign, equals, equals, like1D, vectorize, viewColumnFlip, viewDice, viewPart, viewRow, viewRowFlip, viewSelection, viewStrides |
Methods inherited from class cern.colt.matrix.tlong.LongMatrix2D |
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aggregate, aggregate, aggregate, aggregate, assign, assign, assign, assign, assign, assign, assign, cardinality, copy, forEachNonZero, get, getMaxLocation, getMinLocation, getNegativeValues, getNonZeros, getPositiveValues, like, set, toArray, toString, viewSelection, viewSelection, viewSorted, zMult, zMult, zMult, zMult, zSum |
Methods inherited from class cern.colt.matrix.AbstractMatrix2D |
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checkShape, checkShape, columns, columnStride, index, rows, rowStride, size, toStringShort |
Methods inherited from class cern.colt.matrix.AbstractMatrix |
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ensureCapacity, isView |
Methods inherited from class cern.colt.PersistentObject |
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clone |
Methods inherited from class java.lang.Object |
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getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public SparseCCMLongMatrix2D(int rows, int columns)
rows
- the number of rows the matrix shall have.columns
- the number of columns the matrix shall have.
IllegalArgumentException
- if
rows<0 || columns<0 || (double)columns*rows > Integer.MAX_VALUE
.Method Detail |
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public SparseLongMatrix1D[] elements()
LongMatrix2D
elements
in class WrapperLongMatrix2D
public long getQuick(int row, int column)
LongMatrix2D
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): 0 <= column < columns() && 0 <= row < rows().
getQuick
in class WrapperLongMatrix2D
row
- the index of the row-coordinate.column
- the index of the column-coordinate.
public void setQuick(int row, int column, long value)
LongMatrix2D
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): 0 <= column < columns() && 0 <= row < rows().
setQuick
in class WrapperLongMatrix2D
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 void trimToSize()
AbstractMatrix
This default implementation does nothing. Override this method if necessary.
trimToSize
in class AbstractMatrix
public SparseLongMatrix1D viewColumn(int column)
LongMatrix2D
Example:
2 x 3 matrix: 1, 2, 3 4, 5, 6 |
viewColumn(0) ==> | Matrix1D of size 2: 1, 4 |
viewColumn
in class WrapperLongMatrix2D
column
- the column to fix.
LongMatrix2D.viewRow(int)
public LongMatrix2D like(int rows, int columns)
LongMatrix2D
like
in class WrapperLongMatrix2D
rows
- the number of rows the matrix shall have.columns
- the number of columns the matrix shall have.
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