how can we get param from yaml?

yaml
param

asked 2017-08-02 01:18:56 -0600

neil
3 ●2 ●3 ●6

node_name1: param_name1: value param_name2: value

node_name2: param_name1: value param_name2: value

This is a yaml file,but how can we get param from yaml in our .cpp files? .getParam doesnot work. THANK YOU!

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answered 2017-08-02 04:38:22 -0600

vkee
125 ●8 ●11 ●16

In your launch file, put <rosparam command="load" file="yaml_filepath"/>

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This will load it into the Parameter Server and make the params available to your node. Now you can use getParam() to access those set params.

jayess ( 2017-08-02 13:39:13 -0600 )edit

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Thank you very much! I have solved the problems.I misunderstood the Parameter Server.Now I understand it . getParam() get params from Paramter Server ,no mater the params come from launch file or yaml file. thank you again.

neil ( 2017-08-02 20:35:57 -0600 )edit

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answered 2017-08-02 07:09:24 -0600

Chaos

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Check this for cpp programming or this for python.

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Thank you very much! I have solved the problems.I misunderstood the Parameter Server.Now I understand it . getParam() get params from Paramter Server ,no mater the params come from launch file or yaml file. thank you again. ROS answer is wonderful.

neil ( 2017-08-02 20:38:34 -0600 )edit

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how can we get param from yaml?

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