What Are Parameters in ROS and How Do They Work?
In short: Learn how parameters in ROS are used to configure nodes, and why they're essential for flexible robot behavior.
In ROS 2, parameters are used to configure individual nodes, allowing them to adapt to different environments or tasks. Each parameter has a name, a value, and optionally a descriptor that describes its purpose and constraints. Parameters are tied to the node's lifetime, meaning they are available while the node is running but not saved after it shuts down.
For example, the `use_sim_time` parameter is a boolean that determines whether a node should use simulation time instead of real-world time. This parameter is commonly used in simulation environments to synchronize all nodes to the same virtual clock. While the default value is false, it can be explicitly set to true to enable simulation mode.
Based on: ROS 2 Documentation — Parameters · Licence: CC BY 4.0 · View source →
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Sources
- Source: ROS 2 Documentation: Parameters · CC BY 4.0
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