Class ColumnBindMatrix
- java.lang.Object
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- dev.nm.algebra.linear.matrix.doubles.operation.ColumnBindMatrix
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- All Implemented Interfaces:
Matrix,MatrixAccess,MatrixRing,MatrixTable,AbelianGroup<Matrix>,Monoid<Matrix>,Ring<Matrix>,Table,DeepCopyable
public class ColumnBindMatrix extends Object implements Matrix
A fast "cbind" matrix from vectors.
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Constructor Summary
Constructors Constructor Description ColumnBindMatrix(Vector... vectors)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description Matrixadd(Matrix that)this + thatMatrixdeepCopy()The implementation returns an instance created fromthisby the copy constructor of the class, or justthisif the instance itself is immutable.doubleget(int i, int j)Get the matrix entry at [i,j].VectorgetColumn(int j)Get the specified column in the matrix as a vector.VectorgetRow(int i)Get the specified row in the matrix as a vector.Matrixminus(Matrix that)this - thatMatrixmultiply(Matrix that)this * thatVectormultiply(Vector v)Right multiply this matrix, A, by a vector.intnCols()Gets the number of columns.intnRows()Gets the number of rows.MatrixONE()Get an identity matrix that has the same dimension as this matrix.Matrixopposite()Get the opposite of this matrix.Matrixscaled(double c)Scale this matrix, A, by a constant.voidset(int i, int j, double value)Set the matrix entry at [i,j] to a value.Matrixt()Get the transpose of this matrix.MatrixZERO()Get a zero matrix that has the same dimension as this matrix.
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Constructor Detail
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ColumnBindMatrix
public ColumnBindMatrix(Vector... vectors)
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Method Detail
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multiply
public Vector multiply(Vector v)
Description copied from interface:MatrixRight multiply this matrix, A, by a vector.
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scaled
public Matrix scaled(double c)
Description copied from interface:MatrixScale this matrix, A, by a constant.
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getRow
public Vector getRow(int i) throws MatrixAccessException
Description copied from interface:MatrixGet the specified row in the matrix as a vector.- Specified by:
getRowin interfaceMatrix- Parameters:
i- the row index- Returns:
- the vector A[i, ]
- Throws:
MatrixAccessException- when i < 1, or when i > the number of rows
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getColumn
public Vector getColumn(int j) throws MatrixAccessException
Description copied from interface:MatrixGet the specified column in the matrix as a vector.- Specified by:
getColumnin interfaceMatrix- Parameters:
j- the column index- Returns:
- a vector A[, j]
- Throws:
MatrixAccessException- when j < 1, or when j > the number of columns
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deepCopy
public Matrix deepCopy()
Description copied from interface:DeepCopyableThe implementation returns an instance created fromthisby the copy constructor of the class, or justthisif the instance itself is immutable.- Specified by:
deepCopyin interfaceDeepCopyable- Specified by:
deepCopyin interfaceMatrix- Returns:
- an independent (deep) copy of the instance
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nRows
public int nRows()
Description copied from interface:TableGets the number of rows. Rows count from 1.
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nCols
public int nCols()
Description copied from interface:TableGets the number of columns. Columns count from 1.
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set
public void set(int i, int j, double value) throws MatrixAccessExceptionDescription copied from interface:MatrixAccessSet the matrix entry at [i,j] to a value. This is the only method that may change a matrix.- Specified by:
setin interfaceMatrixAccess- Parameters:
i- the row indexj- the column indexvalue- the value to set A[i,j] to- Throws:
MatrixAccessException- if i or j is out of range
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get
public double get(int i, int j) throws MatrixAccessExceptionDescription copied from interface:MatrixAccessGet the matrix entry at [i,j].- Specified by:
getin interfaceMatrixAccess- Parameters:
i- the row indexj- the column index- Returns:
- A[i,j]
- Throws:
MatrixAccessException- if i or j is out of range
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t
public Matrix t()
Description copied from interface:MatrixRingGet the transpose of this matrix. This is the involution on the matrix ring.- Specified by:
tin interfaceMatrixRing- Returns:
- the transpose of this matrix
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add
public Matrix add(Matrix that)
Description copied from interface:MatrixRingthis + that- Specified by:
addin interfaceAbelianGroup<Matrix>- Specified by:
addin interfaceMatrixRing- Parameters:
that- a matrix- Returns:
- the sum of
thisandthat
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minus
public Matrix minus(Matrix that)
Description copied from interface:MatrixRingthis - that- Specified by:
minusin interfaceAbelianGroup<Matrix>- Specified by:
minusin interfaceMatrixRing- Parameters:
that- a matrix- Returns:
- the difference between
thisandthat
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multiply
public Matrix multiply(Matrix that)
Description copied from interface:MatrixRingthis * that- Specified by:
multiplyin interfaceMatrixRing- Specified by:
multiplyin interfaceMonoid<Matrix>- Parameters:
that- a matrix- Returns:
- the product of
thisandthat
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opposite
public Matrix opposite()
Description copied from interface:MatrixRingGet the opposite of this matrix.- Specified by:
oppositein interfaceAbelianGroup<Matrix>- Specified by:
oppositein interfaceMatrixRing- Returns:
- -this
- See Also:
- Wikipedia: Additive inverse
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ZERO
public Matrix ZERO()
Description copied from interface:MatrixRingGet a zero matrix that has the same dimension as this matrix.- Specified by:
ZEROin interfaceAbelianGroup<Matrix>- Specified by:
ZEROin interfaceMatrixRing- Returns:
- the 0 matrix
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ONE
public Matrix ONE()
Description copied from interface:MatrixRingGet an identity matrix that has the same dimension as this matrix. For a non-square matrix, it zeros out the rows (columns) with index > nCols (nRows).- Specified by:
ONEin interfaceMatrixRing- Specified by:
ONEin interfaceMonoid<Matrix>- Returns:
- an identity matrix
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