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2020-04-30 08:07:58 -0500	answered a question	Initial view after gazebo starts In Gazebo 9 you do: <world> <gui> <camera name="user_camera"> <pose>x y z roll pitc
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2019-03-01 09:23:33 -0500	answered a question	Provide empty string as roslaunch argument substitution A friendly GitHub user reminded me, that in bash you use quotation marks to group space-separated strings as a single ar
2019-01-11 12:44:15 -0500	marked best answer	Provide empty string as roslaunch argument substitution I have a `default.launch` file with some arguments and default values (strings). I would like to substitute a default value with an empty string while launching, e.g. `roslaunch pkg default.launch arg1:=""` But the substitution is ignored. Also ignored are: `roslaunch pkg default.launch arg1:='' roslaunch pkg default.launch arg1:=" "` etc. Working substitutions are: `roslaunch pkg default.launch arg1:="!" roslaunch pkg default.launch arg1:='test'` etc. How can I provide an empty string as an argument substitution?
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2018-11-06 11:26:07 -0500	answered a question	tf::TransformListener gets wrong tf I think you need to swap target and source frames in lookupTransform. I know it is confusing, but I guess the way to th
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2018-07-05 09:42:09 -0500	commented question	Provide empty string as roslaunch argument substitution I opened an issue at GitHub.
2018-07-05 08:02:04 -0500	commented answer	Provide empty string as roslaunch argument substitution Thank you for your idea and your feedback. I guess I'm just going to create a simple launch file including default.launc
2018-07-05 07:59:18 -0500	commented question	Provide empty string as roslaunch argument substitution Thank you for your feedback. E.g. I have an argument which defaults to /sonar, because that's the default sonar topic. A
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2018-07-03 10:16:28 -0500	asked a question	Provide empty string as roslaunch argument substitution Provide empty string as roslaunch argument substitution I have a default.launch file with some arguments and default val
2017-05-30 09:56:59 -0500	commented question	CvBridgeError: [8SC1] is not a color format. but [mono8] is. The conversion does not make sense I had the same issue and fixed it by specifying the desired output format of the conversion to ROS format: cv_bridge.cv2
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