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java.lang.Object cern.colt.PersistentObject cern.colt.matrix.AbstractMatrix cern.colt.matrix.AbstractMatrix2D cern.colt.matrix.tfloat.FloatMatrix2D cern.colt.matrix.tfloat.impl.WrapperFloatMatrix2D cern.colt.matrix.tfloat.impl.RCMFloatMatrix2D
public class RCMFloatMatrix2D
Sparse row-compressed-modified 2-d matrix holding float elements. Each row is stored as SparseFloatMatrix1D.
Field Summary |
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Fields inherited from class cern.colt.PersistentObject |
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serialVersionUID |
Constructor Summary | |
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RCMFloatMatrix2D(int rows,
int columns)
Constructs a matrix with a given number of rows and columns. |
Method Summary | |
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SparseFloatMatrix1D[] |
elements()
Returns the elements of this matrix. |
float |
getQuick(int row,
int column)
Returns the matrix cell value at coordinate [row,column]. |
FloatMatrix2D |
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,
float value)
Sets the matrix cell at coordinate [row,column] to the specified value. |
void |
trimToSize()
Releases any superfluous internal memory. |
SparseFloatMatrix1D |
viewRow(int row)
Constructs and returns a new slice view representing the columns of the given row. |
Methods inherited from class cern.colt.matrix.tfloat.impl.WrapperFloatMatrix2D |
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equals, equals, like1D, setNcolumns, setNrows, vectorize, viewColumn, viewColumnFlip, viewDice, viewPart, viewRowFlip, viewSelection, viewStrides |
Methods inherited from class cern.colt.matrix.tfloat.FloatMatrix2D |
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aggregate, aggregate, aggregate, aggregate, assign, assign, assign, assign, assign, assign, assign, assign, assign, cardinality, copy, forEachNonZero, get, getMaxLocation, getMinLocation, getNegativeValues, getNonZeros, getPositiveValues, like, normalize, set, toArray, toString, viewSelection, viewSelection, viewSorted, zAssign8Neighbors, 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 RCMFloatMatrix2D(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 || (float)columns*rows > Integer.MAX_VALUE
.Method Detail |
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public SparseFloatMatrix1D[] elements()
FloatMatrix2D
elements
in class WrapperFloatMatrix2D
public float getQuick(int row, int column)
WrapperFloatMatrix2D
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 WrapperFloatMatrix2D
row
- the index of the row-coordinate.column
- the index of the column-coordinate.
public void setQuick(int row, int column, float value)
WrapperFloatMatrix2D
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 WrapperFloatMatrix2D
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 SparseFloatMatrix1D viewRow(int row)
WrapperFloatMatrix2D
Example:
2 x 3 matrix: 1, 2, 3 4, 5, 6 |
viewRow(0) ==> | Matrix1D of size 3: 1, 2, 3 |
viewRow
in class WrapperFloatMatrix2D
row
- the row to fix.
WrapperFloatMatrix2D.viewColumn(int)
public FloatMatrix2D like(int rows, int columns)
WrapperFloatMatrix2D
like
in class WrapperFloatMatrix2D
rows
- the number of rows the matrix shall have.columns
- the number of columns the matrix shall have.
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