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Added a marginalCovariance function directly to NonlinearISAM

release/4.3a0
Alex Cunningham 2011-02-11 22:23:42 +00:00
parent d8f05f78ff
commit 61d3d30f3b
2 changed files with 11 additions and 0 deletions
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8
gtsam/nonlinear/NonlinearISAM-inl.h
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@ -91,3 +91,11 @@ Values NonlinearISAM<Values>::estimate() {
else
return linPoint_;
}
/* ************************************************************************* */
template<class Values>
Matrix NonlinearISAM<Values>::marginalCovariance(const Symbol& key) {
Matrix covariance; Vector mean;
boost::tie(mean, covariance) = isam_.marginal(ordering_[key]);
return covariance;
}

3
gtsam/nonlinear/NonlinearISAM.h
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@ -77,6 +77,9 @@ public:
/** replace the current ordering */
void setOrdering(const Ordering& new_ordering) { ordering_ = new_ordering; }
/** find the marginal covariance for a single variable */
Matrix marginalCovariance(const Symbol& key);
// access
/** access the underlying bayes tree */