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add a null model for comparison

release/4.3a0
Yong-Dian Jian 2011-08-29 04:51:17 +00:00
parent 22cce59f2c
commit e9504bd470
2 changed files with 18 additions and 1 deletions
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6
gtsam/linear/NoiseModel.cpp
View File

@ -490,6 +490,12 @@ void Base::reweight(Matrix &A1, Matrix &A2, Matrix &A3, Vector &error) const {
}
}
void Null::print(const std::string &s) const
{ cout << s << ": null ()" << endl; }
Null::shared_ptr Null::Create()
{ return shared_ptr(new Null()); }
Fair::Fair(const double c, const ReweightScheme reweight)
: Base(reweight), c_(c) {
if ( c_ <= 0 ) {

11
gtsam/linear/NoiseModel.h
View File

@ -526,6 +526,17 @@ namespace gtsam {
void reweight(Matrix &A1, Matrix &A2, Matrix &A3, Vector &error) const;
};
class Null : public Base {
public:
typedef boost::shared_ptr<Null> shared_ptr;
Null(const ReweightScheme reweight = Block) : Base(reweight) {}
virtual ~Null() {}
virtual double weight(const double &error) const { return 1.0; }
virtual void print(const std::string &s) const ;
virtual bool equals(const Base& expected, const double tol=1e-8) const { return true; }
static shared_ptr Create() ;
};
class Fair : public Base {
public:
typedef boost::shared_ptr<Fair> shared_ptr;