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java.lang.Objectcern.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.SparseCCMFloatMatrix2D
public class SparseCCMFloatMatrix2D
Sparse column-compressed-modified 2-d matrix holding float elements. Each column is stored as SparseFloatMatrix1D.
Constructor Summary | |
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SparseCCMFloatMatrix2D(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 |
viewColumn(int column)
Constructs and returns a new slice view representing the rows of the given column. |
Methods inherited from class cern.colt.matrix.tfloat.impl.WrapperFloatMatrix2D |
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assign, assign, dct2, dctColumns, dctRows, dht2, dhtColumns, dhtRows, dst2, dstColumns, dstRows, equals, equals, fft2, getFft2, getFftColumns, getFftRows, getIfft2, getIfftColumns, getIfftRows, idct2, idctColumns, idctRows, idht2, idhtColumns, idhtRows, idst2, idstColumns, idstRows, ifft2, like1D, vectorize, viewColumnFlip, viewDice, viewPart, viewRow, 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, 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 SparseCCMFloatMatrix2D(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 SparseFloatMatrix1D[] elements()
FloatMatrix2D
elements
in class WrapperFloatMatrix2D
public float getQuick(int row, int column)
FloatMatrix2D
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)
FloatMatrix2D
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 viewColumn(int column)
FloatMatrix2D
Example:
2 x 3 matrix: 1, 2, 3 4, 5, 6 |
viewColumn(0) ==> | Matrix1D of size 2: 1, 4 |
viewColumn
in class WrapperFloatMatrix2D
column
- the column to fix.
FloatMatrix2D.viewRow(int)
public FloatMatrix2D like(int rows, int columns)
FloatMatrix2D
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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