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We tried the following but didn't succeed: < node pkg="tf" type="static_transform_publisher" name="rotated_map" args="0 0 0 0 0 90 /openni_camera /map 10"/> and in rgbdslam's launch file < param name="fixed_frame_name" value="/rotated_map"/>

Thank you very much in advance

I'm using rgbdslam (with kinect + freenect driver) to process octomaps which are currently somehow rotated round the x-axis and therefore giving me wrong occupancy grid maps when I try to save with map_saver. I tried to fix this with static_transform_publisher but don't know exactly how to use it. As far as I understood, this has to be added to the beginning of my openni/freenect+rgbdslam.launch - file:

<node pkg="tf" type="static_transform_publisher" name="link1_broadcaster" args="x y z yaw pitch roll frame_id child_frame_id period_in_ms"/>

What are the frame_id and child_frame_id?

Thank you very much for your effort, Felix! Now everything works fine.

I downloaded rgbdslam_v2 from indigo branch, if that makes any difference ...

... [ERROR] [1465988735.566811374]: Could not read OcTree in file, currently there are no other types supported in .ot. ...[ERROR] [1465988735.566877078]: Could not open file /home/ubuntu/rgbdslam_catkin_ws/testmap.ot

I figured out saving the file as octomap over gui doesn't work: the mentioned workaround works with an octomap downloaded from uni freiburg, but fails when loading a processed octomap from rgbdslam. The error message is:

... " MessageFilter [target=/map ]: Dropped 100.00% of messages so far. Please turn the [ros.octomap_server.message_notifier] rosconsole logger to DEBUG for more information."

rqt-graph: http://imgur.com/iiiA59y saving octomap with .ot extension works fine. We firstly started rgbdslam+octomap_server+map_saver, recorded an octomap, send model. After sending the model, this error message occurs (from octomap_server): ...

... "send model" in gui, terminal responds with: "no Subscribers, sending of clouds cancelled". rqt_graph only shows one arrow with "tf" headline and that is not a topic, right? what do I miss?

Ok, done. map_saver subscribes now from topic /projected_map, octomap_server provides the data, rqt_graph looks good. But it seems octomap_server doesn't subscribe from rgbdslam: I remapped topic with <remap from="cloud_in" to="/rgbdslam/batch_clouds"/>, but when I press ...

Thanks for your reply! Unfortunately still "waiting for map"... rtabmap is running and recording, both are "sourced" from the same setup files.

Thanks for the fast reply Felix! Thats exactly my problem, how do I subscribe to a (/the map) topic? I've read this a bunch of times before but haven't found a detailed explanation yet. Do you mind to tell me how to continue with this (or the keywords to look for in ros tutorials)?

I need to convert some 3D-maps made with rgbdslam/rtabmap-slam into 2D gridmaps, but really don't know where to start. Can someone please answer me some question to get this done?

1.) rgbdslam: can save octomaps over GUI but the file extension of saved files is pcd instead of bt/ot. Why?

2.) read a lot about saving maps while processing with "rosrun map_server map_saver -f filename". Tried that while rgbdslam/rtabmap where running - response is always: "waiting for map". Do I have to install octomap_server into the same workspace as both slams? And if thats the solution, will I finally have a 2D gridmap by running this command?

As you can see on my questions, I'm a newbie. I know this question has been asked and answered multiple times before though i was not able to make it. I would really appreciate it if someone could help me out.

THANK YOU

I'm having trouble with finding a basic tutorial for how to implement a simple path finding algorithm for an already known map that has been built with slam. I've already tried to use this Tutorial Writing A Global Path Planner Plugin but since I don't have no turtle-bot it doesn't work (thought it might be worth a try...). In fact, this and many other tutorials are always about how to set up a robot that navigates to a goal autonomously - isn't that far beyond and much more complex from what I want to achieve? All I need is something like: load map - set point A - set goal B - show path to this point. Is there anywhere a beginner's guide for this or a way to make the mentioned tutorials work without a robot?

Im trying to install ROS on a MacBook OS X El Capitan, 10.11.5. Im strictly following the installation guide's advices ( http://wiki.ros.org/jade/Installation... ) but always fail when it comes to "resolving dependencies" (Chapter 2.1.2):

When I do

rosdep install --from-paths src --ignore-src --rosdistro jade -y

this error occurs

executing command [sudo -H pip install -U pydot]
Downloading/unpacking pydot
  Running setup.py egg_info for package pydot
    Could´t import dot_parser, loading of dot files will not be possible.

Downloading/unpacking pyparsing==1.5.7 (from pydot)
  Running setup.py egg_info for package pyparsing

Installing collected packages: pydot, pyparsing
  Running setup.py install for pydot
    Couldn´t import dot_parser, loading of dot files will not be possible.
    error: [Errno 1] Operation not permitted: '/System/Library/Frameworks/Python.framework/Versions/2.7/./LICENSE'
    Complete output from command /usr/bin/python -c "import setuptools;__file__='/tmp/pip-build/pydot/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-vIj42V-record/install-record.txt --single-version-externally-managed:
    Couldn´t import dot_parser, loading of dot files will not be possible.

[ ... ] and a few lines later:

copying LICENSE -> /System/Library/Frameworks/Python.framework/Versions/2.7/.

error: [Errno 1] Operation not permitted: '/System/Library/Frameworks/Python.framework/Versions/2.7/./LICENSE'

----------------------------------------
Command /usr/bin/python -c "import setuptools;__file__='/tmp/pip-build/pydot/setup.py';exec(compile(open(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /tmp/pip-vIj42V-record/install-record.txt --single-version-externally-managed failed with error code 1 in /tmp/pip-build/pydot
Storing complete log in /var/root/Library/Logs/pip.log
ERROR: the following rosdeps failed to install
  pip: command [sudo -H pip install -U pydot] failed

What is the problem? Im a beginner to ROS and have no clue how to solve this.