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Add ros2 param load documentation to the rolling branch. #1105

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clalancette merged 1 commit into from
Feb 17, 2021
Merged

Add ros2 param load documentation to the rolling branch. #1105

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27 changes: 25 additions & 2 deletions source/Tutorials/Parameters/Understanding-ROS2-Parameters.rst
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Expand Up @@ -168,9 +168,32 @@ If you open this file, you’ll see the following contents:

Dumping parameters comes in handy if you want to reload the node with the same parameters in the future.

6 Load parameter file
^^^^^^^^^^^^^^^^^^^^^
6 ros2 param load
^^^^^^^^^^^^^^^^^

You can load parameters from a file to a currently running node using the command:

.. code-block:: console

ros2 param load <node_name> <parameter_file>

To load the ./turtlesim.yaml file generated with ``ros2 param dump`` into ``/turtlesim`` node’s parameters, enter the command:

.. code-block:: console

ros2 param load /turtlesim ./turtlesim.yaml

Your terminal will return the message:

.. code-block:: console

Set parameter background_b successful
Set parameter background_g successful
Set parameter background_r successful
Set parameter use_sim_time successful

7 Load parameter file
^^^^^^^^^^^^^^^^^^^^^

To start the same node using your saved parameter values, use:

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