vecmath 1.5.2 · javax.vecmath.GVector

Modifier and Type	Field and Description
private int	length
pack-priv static final long	serialVersionUID
pack-priv double[]	values

Access	Constructor and Description
public	GVector(int the number of elements in this GVector. length) Constructs a new GVector of the specified length with all vector elements initialized to 0.
public	GVector(double[] the values for the new GVector. vector) Constructs a new GVector from the specified array elements.
public	GVector(GVector the source GVector for this new GVector. vector) Constructs a new GVector from the specified vector.
public	GVector(Tuple2f the source for the new GVector's initial values tuple) Constructs a new GVector and copies the initial values from the specified tuple.
public	GVector(Tuple3f the source for the new GVector's initial values tuple) Constructs a new GVector and copies the initial values from the specified tuple.
public	GVector(Tuple3d the source for the new GVector's initial values tuple) Constructs a new GVector and copies the initial values from the specified tuple.
public	GVector(Tuple4f the source for the new GVector's initial values tuple) Constructs a new GVector and copies the initial values from the specified tuple.
public	GVector(Tuple4d the source for the new GVector's initial values tuple) Constructs a new GVector and copies the initial values from the specified tuple.
public	GVector(double[] The array from which the values will be copied. vector, int The number of values copied from the array. length) Constructs a new GVector of the specified length and initializes it by copying the specified number of elements from the specified array.

Method Summary

Modifier and Type	Method and Description
public final void	add(GVector the second vector vector) Sets the value of this vector to sum of itself and the specified vector
public final void	add(GVector the first vector vector1, GVector the second vector vector2) Sets the value of this vector to the vector sum of vectors vector1 and vector2.
public final double	Returns: The angle in radians in the range [0,PI] angle(GVector The other vector v1) Returns the (n-space) angle in radians between this vector and the vector parameter; the return value is constrained to the range [0,PI].
public Object	Returns: a clone of this instance. clone() Overrides java.lang.Object.clone. Creates a new object of the same class as this object.
public final double	Returns: the dot product of this and v1 dot(GVector the other vector v1) Returns the dot product of this vector and vector v1.
public boolean	epsilonEquals(GVector The vector to be compared to this vector v1, double the threshold value epsilon) Returns true if the L-infinite distance between this vector and vector v1 is less than or equal to the epsilon parameter, otherwise returns false.
public boolean	Returns: true or false equals(GVector The vector with which the comparison is made. vector1) Returns true if all of the data members of GVector vector1 are equal to the corresponding data members in this GVector.
public boolean	Returns: true or false equals(Object The object with which the comparison is made. o1) Overrides java.lang.Object.equals. Returns true if the Object o1 is of type GMatrix and all of the data members of o1 are equal to the corresponding data members in this GMatrix.
public final double	Returns: the value at the indexed element getElement(int the index of the element to retrieve (zero indexed) index) Retrieves the value at the specified index value of this vector.
public final int	Returns: number of elements in this vector getSize() Returns the number of elements in this vector.
public int	Returns: the integer hash code value hashCode() Overrides java.lang.Object.hashCode. Returns a hash code value based on the data values in this object.
public final void	interpolate(GVector v1, GVector v2, float alpha) Deprecated Use interpolate(GVector, GVector, double) instead
public final void	interpolate(GVector v1, float alpha) Deprecated Use interpolate(GVector, double) instead
public final void	interpolate(GVector the first vector v1, GVector the second vector v2, double the alpha interpolation parameter alpha) Linearly interpolates between vectors v1 and v2 and places the result into this tuple: this = (1-alpha)v1 + alphav2.
public final void	interpolate(GVector the first vector v1, double the alpha interpolation parameter alpha) Linearly interpolates between this vector and vector v1 and places the result into this tuple: this = (1-alpha)this + alphav1.
public final void	LUDBackSolve(GMatrix The matrix into which the lower and upper decompostions have been placed LU, GVector The b vector in the equation (LU)x = b b, GVector The row permuations that were necessary to produce the LU matrix parameter permutation) LU Decomposition Back Solve; this method takes the LU matrix and the permutation vector produced by the GMatrix method LUD and solves the equation (LU)x = b by placing the solution vector x into this vector.
public final void	mul(GMatrix The matrix in the multiplication m1, GVector The vector that is multiplied v1) Multiplies matrix m1 times Vector v1 and places the result into this vector (this = m1*v1).
public final void	mul(GVector The vector that is temporarily transposed v1, GMatrix The matrix in the multiplication m1) Multiplies the transpose of vector v1 (ie, v1 becomes a row vector with respect to the multiplication) times matrix m1 and places the result into this vector (this = transpose(v1)*m1).
public final void	negate() Negates the value of this vector: this = -this.
public final double	Returns: length of this vector norm() Returns the square root of the sum of the squares of this vector (its length in n-dimensional space).
public final void	normalize(GVector the un-normalized vector v1) Sets the value of this vector to the normalization of vector v1.
public final void	normalize() Normalizes this vector in place.
public final double	Returns: length squared of this vector normSquared() Returns the sum of the squares of this vector (its length squared in n-dimensional space).
public final void	scale(double the scalar value s, GVector the source vector v1) Sets the value of this vector to the scalar multiplication of the scale factor with the vector v1.
public final void	scale(double the scalar value s) Scales this vector by the scale factor s.
public final void	scaleAdd(double the scalar value s, GVector the vector to be multiplied v1, GVector the vector to be added v2) Sets the value of this vector to the scalar multiplication by s of vector v1 plus vector v2 (this = s*v1 + v2).
public final void	set(double[] the source array vector) Sets the value of this vector to the values found in the array parameter.
public final void	set(GVector the source vector vector) Sets the value of this vector to the values found in vector vector.
public final void	set(Tuple2f the source for the new GVector's new values tuple) Sets the value of this vector to the values in tuple
public final void	set(Tuple3f the source for the new GVector's new values tuple) Sets the value of this vector to the values in tuple
public final void	set(Tuple3d the source for the new GVector's new values tuple) Sets the value of this vector to the values in tuple
public final void	set(Tuple4f the source for the new GVector's new values tuple) Sets the value of this vector to the values in tuple
public final void	set(Tuple4d the source for the new GVector's new values tuple) Sets the value of this vector to the values in tuple
public final void	setElement(int the index if the element to modify (zero indexed) index, double the new vector element value value) Modifies the value at the specified index of this vector.
public final void	setSize(int number of desired elements in this vector length) Changes the size of this vector dynamically.
public final void	sub(GVector the other vector vector) Sets the value of this vector to the vector difference of itself and vector (this = this - vector).
public final void	sub(GVector the first vector vector1, GVector the second vector vector2) Sets the value of this vector to the vector difference of vectors vector1 and vector2 (this = vector1 - vector2).
public final void	SVDBackSolve(GMatrix The U matrix produced by the GMatrix method SVD U, GMatrix The W matrix produced by the GMatrix method SVD W, GMatrix The V matrix produced by the GMatrix method SVD V, GVector The b vector in the linear equation Ax = b b) Solves for x in Ax = b, where x is this vector (nx1), A is mxn, b is mx1, and A = UWtranspose(V); U,W,V must be precomputed and can be found by taking the singular value decomposition (SVD) of A using the method SVD found in the GMatrix class.
public String	Returns: the String representation toString() Overrides java.lang.Object.toString. Returns a string that contains the values of this GVector.
public final void	zero() Sets all the values in this vector to zero.

Inherited from java.lang.Object:: finalize getClass notify notifyAll wait wait wait

Field Detail

length	back to summary
private int length

serialVersionUID	back to summary
pack-priv static final long serialVersionUID

values	back to summary
pack-priv double[] values

Constructor Detail

GVector	back to summary
public GVector(int length) Constructs a new GVector of the specified length with all vector elements initialized to 0. Parameters length:int the number of elements in this GVector.

GVector

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public GVector(int length)

Constructs a new GVector of the specified length with all vector elements initialized to 0.

Parameters

length:int: the number of elements in this GVector.

GVector	back to summary
public GVector(double[] vector) Constructs a new GVector from the specified array elements. The length of this GVector is set to the length of the specified array. The array elements are copied into this new GVector. Parameters vector:double[] the values for the new GVector.

GVector

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public GVector(double[] vector)

Constructs a new GVector from the specified array elements. The length of this GVector is set to the length of the specified array. The array elements are copied into this new GVector.

Parameters

vector:double[]: the values for the new GVector.

GVector	back to summary
public GVector(GVector vector) Constructs a new GVector from the specified vector. The vector elements are copied into this new GVector. Parameters vector:GVector the source GVector for this new GVector.

GVector

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public GVector(GVector vector)

Constructs a new GVector from the specified vector. The vector elements are copied into this new GVector.

Parameters

vector:GVector: the source GVector for this new GVector.

GVector	back to summary
public GVector(Tuple2f tuple) Constructs a new GVector and copies the initial values from the specified tuple. Parameters tuple:Tuple2f the source for the new GVector's initial values

GVector

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public GVector(Tuple2f tuple)

Constructs a new GVector and copies the initial values from the specified tuple.

Parameters

tuple:Tuple2f: the source for the new GVector's initial values

GVector	back to summary
public GVector(Tuple3f tuple) Constructs a new GVector and copies the initial values from the specified tuple. Parameters tuple:Tuple3f the source for the new GVector's initial values

GVector

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public GVector(Tuple3f tuple)

Constructs a new GVector and copies the initial values from the specified tuple.

Parameters

tuple:Tuple3f: the source for the new GVector's initial values

GVector	back to summary
public GVector(Tuple3d tuple) Constructs a new GVector and copies the initial values from the specified tuple. Parameters tuple:Tuple3d the source for the new GVector's initial values

GVector

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public GVector(Tuple3d tuple)

Constructs a new GVector and copies the initial values from the specified tuple.

Parameters

tuple:Tuple3d: the source for the new GVector's initial values

GVector	back to summary
public GVector(Tuple4f tuple) Constructs a new GVector and copies the initial values from the specified tuple. Parameters tuple:Tuple4f the source for the new GVector's initial values

GVector

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public GVector(Tuple4f tuple)

Constructs a new GVector and copies the initial values from the specified tuple.

Parameters

tuple:Tuple4f: the source for the new GVector's initial values

GVector	back to summary
public GVector(Tuple4d tuple) Constructs a new GVector and copies the initial values from the specified tuple. Parameters tuple:Tuple4d the source for the new GVector's initial values

GVector

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public GVector(Tuple4d tuple)

Constructs a new GVector and copies the initial values from the specified tuple.

Parameters

tuple:Tuple4d: the source for the new GVector's initial values

GVector back to summary

GVector	back to summary
public GVector(double[] vector, int length) Constructs a new GVector of the specified length and initializes it by copying the specified number of elements from the specified array. The array must contain at least `length` elements (i.e., `vector.length` >= `length`. The length of this new GVector is set to the specified length. Parameters vector:double[] The array from which the values will be copied. length:int The number of values copied from the array.

public GVector(double[] vector, int length)

Constructs a new GVector of the specified length and initializes it by copying the specified number of elements from the specified array. The array must contain at least length elements (i.e., vector.length >= length. The length of this new GVector is set to the specified length.

Parameters

vector:double[]: The array from which the values will be copied.
length:int: The number of values copied from the array.

Method Detail

add	back to summary
public final void add(GVector vector) Sets the value of this vector to sum of itself and the specified vector Parameters vector:GVector the second vector

add

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public final void add(GVector vector)

Sets the value of this vector to sum of itself and the specified vector

Parameters

vector:GVector: the second vector

add	back to summary
public final void add(GVector vector1, GVector vector2) Sets the value of this vector to the vector sum of vectors vector1 and vector2. Parameters vector1:GVector the first vector vector2:GVector the second vector

add

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public final void add(GVector vector1, GVector vector2)

Sets the value of this vector to the vector sum of vectors vector1 and vector2.

Parameters

vector1:GVector: the first vector
vector2:GVector: the second vector

angle	back to summary
public final double angle(GVector v1) Returns the (n-space) angle in radians between this vector and the vector parameter; the return value is constrained to the range [0,PI]. Parameters v1:GVector The other vector Returns:double The angle in radians in the range [0,PI]

angle

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public final double angle(GVector v1)

Returns the (n-space) angle in radians between this vector and the vector parameter; the return value is constrained to the range [0,PI].

Parameters

v1:GVector: The other vector

Returns:double

The angle in radians in the range [0,PI]

clone back to summary

clone	back to summary
public Object clone() Overrides java.lang.Object.clone. Creates a new object of the same class as this object. Returns:Object a clone of this instance. Exceptions OutOfMemoryError: if there is not enough memory. Since vecmath 1.3 See Also `java.lang.Cloneable`

public Object clone()

Overrides java.lang.Object.clone.

Creates a new object of the same class as this object.

Returns:Object

a clone of this instance.

Exceptions

OutOfMemoryError:: if there is not enough memory.

Since

vecmath 1.3

See Also

java.lang.Cloneable

dot	back to summary
public final double dot(GVector v1) Returns the dot product of this vector and vector v1. Parameters v1:GVector the other vector Returns:double the dot product of this and v1

dot

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public final double dot(GVector v1)

Returns the dot product of this vector and vector v1.

Parameters

v1:GVector: the other vector

Returns:double

the dot product of this and v1

epsilonEquals	back to summary
public boolean epsilonEquals(GVector v1, double epsilon) Returns true if the L-infinite distance between this vector and vector v1 is less than or equal to the epsilon parameter, otherwise returns false. The L-infinite distance is equal to MAX[abs(x1-x2), abs(y1-y2), . . . ]. Parameters v1:GVector The vector to be compared to this vector epsilon:double the threshold value

epsilonEquals

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public boolean epsilonEquals(GVector v1, double epsilon)

Returns true if the L-infinite distance between this vector and vector v1 is less than or equal to the epsilon parameter, otherwise returns false. The L-infinite distance is equal to MAX[abs(x1-x2), abs(y1-y2), . . . ].

Parameters

v1:GVector: The vector to be compared to this vector
epsilon:double: the threshold value

equals	back to summary
public boolean equals(GVector vector1) Returns true if all of the data members of GVector vector1 are equal to the corresponding data members in this GVector. Parameters vector1:GVector The vector with which the comparison is made. Returns:boolean true or false

equals

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public boolean equals(GVector vector1)

Returns true if all of the data members of GVector vector1 are equal to the corresponding data members in this GVector.

Parameters

vector1:GVector: The vector with which the comparison is made.

Returns:boolean

true or false

equals	back to summary
public boolean equals(Object o1) Overrides java.lang.Object.equals. Returns true if the Object o1 is of type GMatrix and all of the data members of o1 are equal to the corresponding data members in this GMatrix. Parameters o1:Object The object with which the comparison is made. Returns:boolean true or false

equals

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public boolean equals(Object o1)

Overrides java.lang.Object.equals.

Returns true if the Object o1 is of type GMatrix and all of the data members of o1 are equal to the corresponding data members in this GMatrix.

Parameters

o1:Object: The object with which the comparison is made.

Returns:boolean

true or false

getElement	back to summary
public final double getElement(int index) Retrieves the value at the specified index value of this vector. Parameters index:int the index of the element to retrieve (zero indexed) Returns:double the value at the indexed element

getElement

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public final double getElement(int index)

Retrieves the value at the specified index value of this vector.

Parameters

index:int: the index of the element to retrieve (zero indexed)

Returns:double

the value at the indexed element

getSize	back to summary
public final int getSize() Returns the number of elements in this vector. Returns:int number of elements in this vector

getSize

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public final int getSize()

Returns the number of elements in this vector.

Returns:int: number of elements in this vector

hashCode	back to summary
public int hashCode() Overrides java.lang.Object.hashCode. Returns a hash code value based on the data values in this object. Two different GVector objects with identical data values (i.e., GVector.equals returns true) will return the same hash number. Two GVector objects with different data members may return the same hash value, although this is not likely. Returns:int the integer hash code value

hashCode

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public int hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value based on the data values in this object. Two different GVector objects with identical data values (i.e., GVector.equals returns true) will return the same hash number. Two GVector objects with different data members may return the same hash value, although this is not likely.

Returns:int: the integer hash code value

interpolate	back to summary
public final void interpolate(GVector v1, GVector v2, float alpha) Deprecated Use interpolate(GVector, GVector, double) instead

interpolate	back to summary
public final void interpolate(GVector v1, float alpha) Deprecated Use interpolate(GVector, double) instead

interpolate	back to summary
public final void interpolate(GVector v1, GVector v2, double alpha) Linearly interpolates between vectors v1 and v2 and places the result into this tuple: this = (1-alpha)v1 + alphav2. Parameters v1:GVector the first vector v2:GVector the second vector alpha:double the alpha interpolation parameter

interpolate

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public final void interpolate(GVector v1, GVector v2, double alpha)

Linearly interpolates between vectors v1 and v2 and places the result into this tuple: this = (1-alpha)*v1 + alpha*v2.

Parameters

v1:GVector: the first vector
v2:GVector: the second vector
alpha:double: the alpha interpolation parameter

interpolate	back to summary
public final void interpolate(GVector v1, double alpha) Linearly interpolates between this vector and vector v1 and places the result into this tuple: this = (1-alpha)this + alphav1. Parameters v1:GVector the first vector alpha:double the alpha interpolation parameter

interpolate

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public final void interpolate(GVector v1, double alpha)

Linearly interpolates between this vector and vector v1 and places the result into this tuple: this = (1-alpha)*this + alpha*v1.

Parameters

v1:GVector: the first vector
alpha:double: the alpha interpolation parameter

LUDBackSolve	back to summary
public final void LUDBackSolve(GMatrix LU, GVector b, GVector permutation) LU Decomposition Back Solve; this method takes the LU matrix and the permutation vector produced by the GMatrix method LUD and solves the equation (LU)x = b by placing the solution vector x into this vector. This vector should be the same length or longer than b. Parameters LU:GMatrix The matrix into which the lower and upper decompostions have been placed b:GVector The b vector in the equation (LU)x = b permutation:GVector The row permuations that were necessary to produce the LU matrix parameter

LUDBackSolve

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public final void LUDBackSolve(GMatrix LU, GVector b, GVector permutation)

LU Decomposition Back Solve; this method takes the LU matrix and the permutation vector produced by the GMatrix method LUD and solves the equation (LU)*x = b by placing the solution vector x into this vector. This vector should be the same length or longer than b.

Parameters

LU:GMatrix: The matrix into which the lower and upper decompostions have been placed
b:GVector: The b vector in the equation (LU)*x = b
permutation:GVector: The row permuations that were necessary to produce the LU matrix parameter

mul	back to summary
public final void mul(GMatrix m1, GVector v1) Multiplies matrix m1 times Vector v1 and places the result into this vector (this = m1*v1). Parameters m1:GMatrix The matrix in the multiplication v1:GVector The vector that is multiplied

mul

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public final void mul(GMatrix m1, GVector v1)

Multiplies matrix m1 times Vector v1 and places the result into this vector (this = m1*v1).

Parameters

m1:GMatrix: The matrix in the multiplication
v1:GVector: The vector that is multiplied

mul	back to summary
public final void mul(GVector v1, GMatrix m1) Multiplies the transpose of vector v1 (ie, v1 becomes a row vector with respect to the multiplication) times matrix m1 and places the result into this vector (this = transpose(v1)*m1). The result is technically a row vector, but the GVector class only knows about column vectors, and so the result is stored as a column vector. Parameters v1:GVector The vector that is temporarily transposed m1:GMatrix The matrix in the multiplication

mul

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public final void mul(GVector v1, GMatrix m1)

Multiplies the transpose of vector v1 (ie, v1 becomes a row vector with respect to the multiplication) times matrix m1 and places the result into this vector (this = transpose(v1)*m1). The result is technically a row vector, but the GVector class only knows about column vectors, and so the result is stored as a column vector.

Parameters

v1:GVector: The vector that is temporarily transposed
m1:GMatrix: The matrix in the multiplication

negate	back to summary
public final void negate() Negates the value of this vector: this = -this.

norm	back to summary
public final double norm() Returns the square root of the sum of the squares of this vector (its length in n-dimensional space). Returns:double length of this vector

norm

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public final double norm()

Returns the square root of the sum of the squares of this vector (its length in n-dimensional space).

Returns:double: length of this vector

normalize	back to summary
public final void normalize(GVector v1) Sets the value of this vector to the normalization of vector v1. Parameters v1:GVector the un-normalized vector

normalize

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public final void normalize(GVector v1)

Sets the value of this vector to the normalization of vector v1.

Parameters

v1:GVector: the un-normalized vector

normalize	back to summary
public final void normalize() Normalizes this vector in place.

normSquared	back to summary
public final double normSquared() Returns the sum of the squares of this vector (its length squared in n-dimensional space). Returns:double length squared of this vector

normSquared

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public final double normSquared()

Returns the sum of the squares of this vector (its length squared in n-dimensional space).

Returns:double: length squared of this vector

scale	back to summary
public final void scale(double s, GVector v1) Sets the value of this vector to the scalar multiplication of the scale factor with the vector v1. Parameters s:double the scalar value v1:GVector the source vector

scale

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public final void scale(double s, GVector v1)

Sets the value of this vector to the scalar multiplication of the scale factor with the vector v1.

Parameters

s:double: the scalar value
v1:GVector: the source vector

scale	back to summary
public final void scale(double s) Scales this vector by the scale factor s. Parameters s:double the scalar value

scale

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public final void scale(double s)

Scales this vector by the scale factor s.

Parameters

s:double: the scalar value

scaleAdd	back to summary
public final void scaleAdd(double s, GVector v1, GVector v2) Sets the value of this vector to the scalar multiplication by s of vector v1 plus vector v2 (this = s*v1 + v2). Parameters s:double the scalar value v1:GVector the vector to be multiplied v2:GVector the vector to be added

scaleAdd

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public final void scaleAdd(double s, GVector v1, GVector v2)

Sets the value of this vector to the scalar multiplication by s of vector v1 plus vector v2 (this = s*v1 + v2).

Parameters

s:double: the scalar value
v1:GVector: the vector to be multiplied
v2:GVector: the vector to be added

set	back to summary
public final void set(double[] vector) Sets the value of this vector to the values found in the array parameter. The array should be at least equal in length to the number of elements in the vector. Parameters vector:double[] the source array

set

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public final void set(double[] vector)

Sets the value of this vector to the values found in the array parameter. The array should be at least equal in length to the number of elements in the vector.

Parameters

vector:double[]: the source array

set	back to summary
public final void set(GVector vector) Sets the value of this vector to the values found in vector vector. Parameters vector:GVector the source vector

set

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public final void set(GVector vector)

Sets the value of this vector to the values found in vector vector.

Parameters

vector:GVector: the source vector

set	back to summary
public final void set(Tuple2f tuple) Sets the value of this vector to the values in tuple Parameters tuple:Tuple2f the source for the new GVector's new values

set

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public final void set(Tuple2f tuple)

Sets the value of this vector to the values in tuple

Parameters

tuple:Tuple2f: the source for the new GVector's new values

set	back to summary
public final void set(Tuple3f tuple) Sets the value of this vector to the values in tuple Parameters tuple:Tuple3f the source for the new GVector's new values

set

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public final void set(Tuple3f tuple)

Sets the value of this vector to the values in tuple

Parameters

tuple:Tuple3f: the source for the new GVector's new values

set	back to summary
public final void set(Tuple3d tuple) Sets the value of this vector to the values in tuple Parameters tuple:Tuple3d the source for the new GVector's new values

set

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public final void set(Tuple3d tuple)

Sets the value of this vector to the values in tuple

Parameters

tuple:Tuple3d: the source for the new GVector's new values

set	back to summary
public final void set(Tuple4f tuple) Sets the value of this vector to the values in tuple Parameters tuple:Tuple4f the source for the new GVector's new values

set

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public final void set(Tuple4f tuple)

Sets the value of this vector to the values in tuple

Parameters

tuple:Tuple4f: the source for the new GVector's new values

set	back to summary
public final void set(Tuple4d tuple) Sets the value of this vector to the values in tuple Parameters tuple:Tuple4d the source for the new GVector's new values

set

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public final void set(Tuple4d tuple)

Sets the value of this vector to the values in tuple

Parameters

tuple:Tuple4d: the source for the new GVector's new values

setElement	back to summary
public final void setElement(int index, double value) Modifies the value at the specified index of this vector. Parameters index:int the index if the element to modify (zero indexed) value:double the new vector element value

setElement

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public final void setElement(int index, double value)

Modifies the value at the specified index of this vector.

Parameters

index:int: the index if the element to modify (zero indexed)
value:double: the new vector element value

setSize	back to summary
public final void setSize(int length) Changes the size of this vector dynamically. If the size is increased no data values will be lost. If the size is decreased, only those data values whose vector positions were eliminated will be lost. Parameters length:int number of desired elements in this vector

setSize

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public final void setSize(int length)

Changes the size of this vector dynamically. If the size is increased no data values will be lost. If the size is decreased, only those data values whose vector positions were eliminated will be lost.

Parameters

length:int: number of desired elements in this vector

sub

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public final void sub(GVector vector)

Sets the value of this vector to the vector difference of itself and vector (this = this - vector).

Parameters

vector:GVector: the other vector

sub

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public final void sub(GVector vector1, GVector vector2)

Sets the value of this vector to the vector difference of vectors vector1 and vector2 (this = vector1 - vector2).

Parameters

vector1:GVector: the first vector
vector2:GVector: the second vector

SVDBackSolve

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public final void SVDBackSolve(GMatrix U, GMatrix W, GMatrix V, GVector b)

Solves for x in Ax = b, where x is this vector (nx1), A is mxn, b is mx1, and A = U*W*transpose(V); U,W,V must be precomputed and can be found by taking the singular value decomposition (SVD) of A using the method SVD found in the GMatrix class.

Parameters

U:GMatrix: The U matrix produced by the GMatrix method SVD
W:GMatrix: The W matrix produced by the GMatrix method SVD
V:GMatrix: The V matrix produced by the GMatrix method SVD
b:GVector: The b vector in the linear equation Ax = b

toString

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public String toString()

Overrides java.lang.Object.toString.

Returns a string that contains the values of this GVector.

Returns:String: the String representation

zero	back to summary
public final void zero() Sets all the values in this vector to zero.

public Class GVector

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail