roslaunch - get parameter files loaded

asked 2018-10-16 09:01:20 -0500

lucascoelho gravatar image

Hi all,

roslaunch has some options to get the launch files included and nodes launched. However, I want to know which parameter files (yaml) would be loaded when running a launch file with a given set of arguments. Is that possible? Using the python API would also be OK for me.

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Not quite sure what you mean, parameters are loaded quite similarly to nodes being launched, so you can always just look at the included files. rqt_launchtree is a nice tool for figuring out what your larger launch files are launching and what the parameters are

Reamees gravatar image Reamees  ( 2018-10-17 01:40:06 -0500 )edit

Hi @Reamees, rqt_launchtree is not exactly what I was looking for, because I don't want something graphic, but I've analyzed their code and I saw that they use roslaunch xmlparser from the python API to get the yaml files loaded.

lucascoelho gravatar image lucascoelho  ( 2018-10-17 08:58:12 -0500 )edit

My problem is that I have a very complex structure of launch files with a lot of includes and also some of these includes are influenced by environment variables, making the process of manually looking at the launch files unpractical. I think the package you've sent will help me with that, thanks!

lucascoelho gravatar image lucascoelho  ( 2018-10-17 09:01:42 -0500 )edit