MagneticFieldSubscriber QML Type

Subscribes to sensor_msgs::msg::MagneticField messages — Measurement of the Magnetic Field vector at a specific location. More...

• List of all members, including inherited members

Properties

• header : header
• magneticField : vector3
• magneticFieldCovariance : list<double>
• message : magneticField

Signals

• messageReceived(magneticField msg)

Detailed Description

If the covariance of the measurement is known, it should be filled in. If all you know is the variance of each measurement, e.g. from the datasheet, just put those along the diagonal. A covariance matrix of all zeros will be interpreted as "covariance unknown", and to use the data a covariance will have to be assumed or gotten from some other source.

MagneticFieldSubscriber receives magneticField values from a ROS 2 topic. Set the topic and node properties, then connect to the messageReceived() signal.

See also MagneticFieldPublisher and magneticField.

Property Documentation

header : header

The header field of the last received message. Updated whenever a new message arrives. headerChanged is emitted on every update.

magneticField : vector3

The magneticField field of the last received message. Updated whenever a new message arrives. magneticFieldChanged is emitted on every update.

magneticFieldCovariance : list<double>

The magneticFieldCovariance field of the last received message. Updated whenever a new message arrives. magneticFieldCovarianceChanged is emitted on every update.

message : magneticField

The last message received on topic. Updated whenever a new message arrives.

Signal Documentation

messageReceived(magneticField msg)

Emitted when a new magneticField arrives on topic. msg contains the received value.