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Initialize parameters via yaml in ros2

asked 2018-06-19 18:44:02 -0500

aarushg
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updated 2018-06-19 18:55:26 -0500

jayess
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According to this PR, we can now initialize parameters via yaml file. I edited the talker example to have the parameter client so I can see the changes in parameters, but when I try to load the parameters via this line as given in the PR comments

ros2 run demo_nodes_cpp talker_with_params __params:=install/share/demo_nodes_cpp/talker_params.yaml

I get this error

terminate called after throwing an instance of 'std::runtime_error' 
what(): Failed to parse parameters install/share/demo_nodes_cpp/talker_params.yaml

anything I'm doing wrong?

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answered 2018-06-19 18:48:30 -0500

dhood
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Likely the syntax of the yaml file is not correct. Can you post its contents? It should have syntax as described here: https://github.com/ros2/rcl/blob/mast...

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yes, thank you. I wasn't aware of this yaml syntax it works now.

aarushg ( 2018-06-19 19:13:29 -0500 )edit

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Asked: 2018-06-19 18:44:02 -0500

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Last updated: Jun 19 '18

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Initialize parameters via yaml in ros2