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Hello,

After digging for a while, I believe it's not possible to set the arguments using the API.

There are related questions in this forum and seems that the users are using python subprocess to do that:

https://answers.ros.org/question/198910/how-to-set-args-with-python-roslaunch/ https://answers.ros.org/question/265796/parameters-roslaunch-from-python-script/

Fortunately, there's a Pull Request that proposes a solution to that issue:

https://github.com/ros/ros_comm/pull/1115

I hope it can help you!

Hello,

After digging for a while, I believe it's not possible to set the arguments using the API.

There are related questions in this forum and seems that the users are using python subprocess to do that:

https://answers.ros.org/question/198910/how-to-set-args-with-python-roslaunch/ https://answers.ros.org/question/265796/parameters-roslaunch-from-python-script/

There's a page in ROS wiki as example, but without arguments: http://wiki.ros.org/roslaunch/API%20Usage

If you want to check by yourself, here goes the API page that refers to the launch object used in a ROS wiki:

http://docs.ros.org/indigo/api/roslaunch/html/roslaunch.parent.ROSLaunchParent-class.html

Fortunately, there's a Pull Request that proposes a solution to that issue:

https://github.com/ros/ros_comm/pull/1115

I hope it can help you!