Should the gmapping wiki mention that the node subscribes to tf_static too?

asked 2020-12-12 05:25:49 -0600

fabian gravatar image

I have been trying to create a map from a rosbag file for some time according to a few tutorials. These tutorials always mention that one needs to record the topics \scan and \tf when generating the bag. I did that and then replayed the bag while running the node slam_gmapping program from the gmapping package. Unfortunately, this did never create the map.

However, when I recorded the topics \scan \tf and \tf_static, I could create the map through replaying the bag. Additionally, when I type rosnode info \slam_gmapping I see the following info:

 * /scan [unknown type]
 * /tf [tf2_msgs/TFMessage]
 * /tf_static [unknown type]

The info together with my attempts to create the map from replaying the bag made we wonder whether the wiki for gmapping should mentiond that it also subscribes to the tf_static topic?

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Sounds like a good change to make.

If you could update the relevant pages, that would be appreciated.

gvdhoorn gravatar image gvdhoorn  ( 2020-12-13 01:46:27 -0600 )edit

Thanks for your answer, @gvdhoorn ! I tried to edit the page but couldn't do it. Based on section 4 of the info about the wiki I got my name whitelisted for editing and logged into gmapping. Instead of the log-in button, I can now see a link to Setting and Logout below my username, but I cannot see a link to "edit" the website (as the info about the wiki mentions). Furthermore, the site is declared to be an "Immutable Page" at the right margin. Can you kindly educate me how I can change the website?

fabian gravatar image fabian  ( 2020-12-13 10:14:53 -0600 )edit

I just checked and for my user account the gmapping page is editable.

Not sure whether that's due to account age, or some other setting.

Can you edit any other pages?

gvdhoorn gravatar image gvdhoorn  ( 2020-12-15 03:42:39 -0600 )edit

Thanks @gvdhoorn for your reply. I just wanted to thank you for your reply. I have been working for some time to figure out why I cannot edit the page and hope to resolve this and to edit the page as discussed.

fabian gravatar image fabian  ( 2020-12-29 08:28:01 -0600 )edit