gtsam  3.2.0
gtsam
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
gtsam::ReferenceFrameFactor< POINT, TRANSFORM > Class Template Reference

Detailed Description

template<class POINT, class TRANSFORM>
class gtsam::ReferenceFrameFactor< POINT, TRANSFORM >

A constraint between two landmarks in separate maps Templated on: Point : Type of landmark Transform : Transform variable class.

The transform is defined as transforming global to local: l = lTg * g

The Point and Transform concepts must be Lie types, and the transform relationship "Point = transform_from(Transform, Point)" must exist.

To implement this function in new domains, specialize a new version of Point transform_point<Transform,Point>(transform, global, Dtrans, Dglobal) to use the correct point and transform types.

This base class should be specialized to implement the cost function for specific classes of landmarks

+ Inheritance diagram for gtsam::ReferenceFrameFactor< POINT, TRANSFORM >:

Public Member Functions

 ReferenceFrameFactor (Key globalKey, Key transKey, Key localKey, const noiseModel::Base::shared_ptr &model)
 General constructor with arbitrary noise model (constrained or otherwise)
 
 ReferenceFrameFactor (double mu, Key globalKey, Key transKey, Key localKey)
 Construct a hard frame of reference reference constraint with equal mu values for each degree of freedom.
 
 ReferenceFrameFactor (Key globalKey, Key transKey, Key localKey, double sigma=1e-2)
 Simple soft constraint constructor for frame of reference, with equal weighting for each degree of freedom.
 
virtual NonlinearFactor::shared_ptr clone () const
 Create a symbolic factor using the given ordering to determine the variable indices. More...
 
virtual Vector evaluateError (const Point &global, const Transform &trans, const Point &local, boost::optional< Matrix & > Dforeign=boost::none, boost::optional< Matrix & > Dtrans=boost::none, boost::optional< Matrix & > Dlocal=boost::none) const
 Combined cost and derivative function using boost::optional.
 
virtual void print (const std::string &s="", const gtsam::KeyFormatter &keyFormatter=DefaultKeyFormatter) const
 Print.
 
Key global_key () const
 
Key transform_key () const
 
Key local_key () const
 
- Public Member Functions inherited from gtsam::NoiseModelFactor3< POINT, TRANSFORM, POINT >
 NoiseModelFactor3 ()
 Default Constructor for I/O.
 
 NoiseModelFactor3 (const SharedNoiseModel &noiseModel, Key j1, Key j2, Key j3)
 Constructor. More...
 
Key key1 () const
 methods to retrieve keys
 
Key key2 () const
 
Key key3 () const
 
virtual Vector unwhitenedError (const Values &x, boost::optional< std::vector< Matrix > & > H=boost::none) const
 Calls the 3-key specific version of evaluateError, which is pure virtual so must be implemented in the derived class. More...
 
- Public Member Functions inherited from gtsam::NoiseModelFactor
 NoiseModelFactor ()
 Default constructor for I/O only.
 
virtual ~NoiseModelFactor ()
 Destructor.
 
template<typename CONTAINER >
 NoiseModelFactor (const SharedNoiseModel &noiseModel, const CONTAINER &keys)
 Constructor.
 
virtual bool equals (const NonlinearFactor &f, double tol=1e-9) const
 Check if two factors are equal.
 
virtual size_t dim () const
 get the dimension of the factor (number of rows on linearization)
 
SharedNoiseModel get_noiseModel () const
 access to the noise model
 
Vector whitenedError (const Values &c) const
 Vector of errors, whitened This is the raw error, i.e., i.e. More...
 
virtual double error (const Values &c) const
 Calculate the error of the factor. More...
 
boost::shared_ptr< GaussianFactorlinearize (const Values &x) const
 Linearize a non-linearFactorN to get a GaussianFactor, \( Ax-b \approx h(x+\delta x)-z = h(x) + A \delta x - z \) Hence \( b = z - h(x) = - \mathtt{error\_vector}(x) \).
 
- Public Member Functions inherited from gtsam::NonlinearFactor
 NonlinearFactor ()
 Default constructor for I/O only.
 
template<typename CONTAINER >
 NonlinearFactor (const CONTAINER &keys)
 Constructor from a collection of the keys involved in this factor.
 
virtual ~NonlinearFactor ()
 Destructor.
 
virtual bool active (const Values &c) const
 Checks whether a factor should be used based on a set of values. More...
 
shared_ptr rekey (const std::map< Key, Key > &rekey_mapping) const
 Creates a shared_ptr clone of the factor with different keys using a map from old->new keys.
 
shared_ptr rekey (const std::vector< Key > &new_keys) const
 Clones a factor and fully replaces its keys. More...
 
- Public Member Functions inherited from gtsam::Factor
Key front () const
 First key.
 
Key back () const
 Last key.
 
const_iterator find (Key key) const
 find
 
const FastVector< Key > & keys () const
 Access the factor's involved variable keys.
 
const_iterator begin () const
 Iterator at beginning of involved variable keys.
 
const_iterator end () const
 Iterator at end of involved variable keys.
 
size_t size () const
 
void print (const std::string &s="Factor", const KeyFormatter &formatter=DefaultKeyFormatter) const
 print
 
void printKeys (const std::string &s="Factor", const KeyFormatter &formatter=DefaultKeyFormatter) const
 print only keys
 
FastVector< Key > & keys ()
 
iterator begin ()
 Iterator at beginning of involved variable keys.
 
iterator end ()
 Iterator at end of involved variable keys.
 

Public Types

typedef NoiseModelFactor3
< POINT, TRANSFORM, POINT > 
Base
 
typedef ReferenceFrameFactor
< POINT, TRANSFORM > 
This
 
typedef POINT Point
 
typedef TRANSFORM Transform
 
- Public Types inherited from gtsam::NoiseModelFactor3< POINT, TRANSFORM, POINT >
typedef POINT X1
 
typedef TRANSFORM X2
 
typedef POINT X3
 
- Public Types inherited from gtsam::NoiseModelFactor
typedef boost::shared_ptr< Thisshared_ptr
 Noise model.
 
- Public Types inherited from gtsam::NonlinearFactor
typedef boost::shared_ptr< Thisshared_ptr
 
- Public Types inherited from gtsam::Factor
typedef FastVector< Key >::iterator iterator
 Iterator over keys.
 
typedef FastVector< Key >
::const_iterator 
const_iterator
 Const iterator over keys.
 

Protected Member Functions

 ReferenceFrameFactor ()
 default constructor for serialization only
 
- Protected Member Functions inherited from gtsam::NoiseModelFactor
 NoiseModelFactor (const SharedNoiseModel &noiseModel)
 Constructor - only for subclasses, as this does not set keys.
 
- Protected Member Functions inherited from gtsam::Factor
 Factor ()
 Default constructor for I/O.
 
template<typename CONTAINER >
 Factor (const CONTAINER &keys)
 Construct factor from container of keys. More...
 
template<typename ITERATOR >
 Factor (ITERATOR first, ITERATOR last)
 Construct factor from iterator keys. More...
 
bool equals (const This &other, double tol=1e-9) const
 check equality
 

Friends

class boost::serialization::access
 Serialization function.
 

Additional Inherited Members

- Protected Types inherited from gtsam::NoiseModelFactor3< POINT, TRANSFORM, POINT >
typedef NoiseModelFactor Base
 
typedef NoiseModelFactor3
< POINT, TRANSFORM, POINT > 
This
 
- Protected Types inherited from gtsam::NoiseModelFactor
typedef NonlinearFactor Base
 
typedef NoiseModelFactor This
 
- Protected Types inherited from gtsam::NonlinearFactor
typedef Factor Base
 
typedef NonlinearFactor This
 
- Static Protected Member Functions inherited from gtsam::Factor
template<typename CONTAINER >
static Factor FromKeys (const CONTAINER &keys)
 Construct factor from container of keys. More...
 
template<typename ITERATOR >
static Factor FromIterators (ITERATOR first, ITERATOR last)
 Construct factor from iterator keys. More...
 
- Protected Attributes inherited from gtsam::NoiseModelFactor
SharedNoiseModel noiseModel_
 
- Protected Attributes inherited from gtsam::Factor
FastVector< Keykeys_
 The keys involved in this factor.
 

Member Function Documentation

template<class POINT , class TRANSFORM >
virtual NonlinearFactor::shared_ptr gtsam::ReferenceFrameFactor< POINT, TRANSFORM >::clone ( ) const
inlinevirtual

Create a symbolic factor using the given ordering to determine the variable indices.

Creates a shared_ptr clone of the factor - needs to be specialized to allow for subclasses

By default, throws exception if subclass does not implement the function.

Reimplemented from gtsam::NonlinearFactor.


The documentation for this class was generated from the following file: