twistWithCovariance QML Value Type

This expresses velocity in free space with uncertainty. More...

Properties

• covariance : list<double>
• twist : twist

Detailed Description

twistWithCovariance is a structured value type usable in QML. It maps directly to the geometry_msgs::msg::TwistWithCovariance ROS 2 message type.

Construct a twistWithCovariance in QML by assigning a JavaScript object whose keys are its component properties, or by setting those properties individually.

See also TwistWithCovariancePublisher and TwistWithCovarianceSubscriber.

Property Documentation

covariance : list<double>

Row-major 6×6 covariance matrix for the twist.

Diagonal entries are variances of linear.x, linear.y, linear.z, angular.x, angular.y, angular.z (in that order); off-diagonal entries are the corresponding covariances. Set all 36 entries; unknown components are often left at zero or filled with a small positive variance.

twist : twist