ROS yaml launch with parameter file

config/params.yaml
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simple_param_node:
  ros__parameters:
    greeting: "Hi from YAML!"

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launch:
- node:
    pkg: "yaml_launch"
    exec: "simple_param_node.py"
    param:
      - from: $(find-pkg-share yaml_launch)/config/params.yaml

Note

We can load params from multiple file using multiple form