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fix empty factors bug

release/4.3a0
thduynguyen 2014-09-25 11:18:51 -04:00
parent 11969b32f6
commit 78d9a8cab8
1 changed files with 1 additions and 0 deletions
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gtsam/linear/GaussianFactorGraph.cpp
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@ -305,6 +305,7 @@ VectorValues GaussianFactorGraph::gradientAtZero(
// Zero-out the gradient // Zero-out the gradient
VectorValues g; VectorValues g;
BOOST_FOREACH(const sharedFactor& factor, *this) { BOOST_FOREACH(const sharedFactor& factor, *this) {
if (!factor) continue;
VectorValues gi = factor->gradientAtZero(negDuals); VectorValues gi = factor->gradientAtZero(negDuals);
g.addInPlace_(gi); g.addInPlace_(gi);
} }