twist_with_covariance.hpp

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namespace geometry_msgs::msg {
class TwistWithCovariance {
public:
    // This expresses velocity in free space with uncertainty.
 
    msg::Twist twist;
 
    // Row-major representation of the 6x6 covariance matrix
    // The orientation parameters use a fixed-axis representation.
    // In order, the parameters are:
    // (x, y, z, rotation about X axis, rotation about Y axis, rotation about Z axis)
    std::array<double, 36> covariance;
};
} // namespace geometry_msgs::msg