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2019-10-24 02:26:52 -0500	answered a question	Extract Header from ShapeShifter If you are sure that the shapeshifter contains a message with a std_msgs::Header, you can try temporarily morphing the s
2016-12-06 18:30:07 -0500	commented answer	Plot a Gaussian 3D representation with markers in rviz Note: although the eigenvalues are guaranteed to be positive, the eigenvector matrix may either have a determinant of +1 or -1. Check the eigenvectors carefully before treating it as a rotation matrix. By the way, it's customary to use sqrt(eigvalues) for scale.

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