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2016-05-03 08:40:30 -0500 commented answer Octree to Quadtree from Octomap

I have worked it out. Thanks.

2016-05-03 04:01:39 -0500 commented answer Octree to Quadtree from Octomap

hi, i came across the same problem, but after i modify the octomap_server_multilayer.cpp(/opt/ros/groovy/stacks/octomap_mapping), how do i rebuild the file to make the system know that the file has been changed? I tried rosmake, but i didn't work? Any suggestion? Thank you

2016-03-15 05:43:34 -0500 commented question error compiling g2o about g2o_viewer

i tried to install it, but it went wrong. I don't know why

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2016-01-22 04:25:21 -0500 asked a question error on pcl_viewer

Hi everyone,

I use rgbdslam v2 to build 3D map and I save the map to file .pcd format. When I use command pcl_viewer to read the file .pcd format, it says,

The viewer window provides interactive commands; for help, press 'h' or 'H' from within the window.

Loading quicksave.pcd [pcl::PCDReader::readHeader] No points to read.

I hope someone can help me solve it. Any suggestion is welcome. Thanks in advance. cheers.

jwlifly

2016-01-22 03:21:51 -0500 asked a question error compiling g2o about g2o_viewer

Hi everyone,

Recently, I have been studying g2o link:[https://github.com/RainerKuemmerle/g2o] , an open-source C++ framework for optimizing graph-based nonlinear error functions, I followed the README in the file g2o. When i cmake the file, it all went well, but when i make it, it failed, which is run on ubuntu 14.04 indigo. Obviouly, making g2o_viewer went wrong. The details are as follows:

ljw@ljw-K42JZ:~/the_third_party_package/g2o/build$ make
[  2%] Built target freeglut_minimal
[  3%] Built target opengl_helper
[  8%] Built target stuff
[ 23%] Built target core
[ 24%] Built target g2o_cli_library
[ 25%] Built target g2o_cli_application
[ 33%] Built target types_slam3d
[ 40%] Built target types_slam2d
[ 48%] Built target g2o_simulator_library
[ 48%] Built target g2o_simulator2d_application
[ 49%] Built target g2o_simulator3d_application
Linking CXX shared library ../../../../lib/libg2o_viewer.so
[ 57%] Built target viewer_library
Linking CXX executable ../../../../bin/g2o_viewer
../../../../lib/libg2o_viewer.so: undefined reference to `QGLViewer::setPathKey(int, int)'
../../../../lib/libg2o_viewer.so: undefined reference to `QGLViewer::setPlayPathStateKey(int)'
../../../../lib/libg2o_viewer.so: undefined reference to `qglviewer::Camera::setSceneRadius(float)'
../../../../lib/libg2o_viewer.so: undefined reference to `qglviewer::Camera::addKeyFrameToPath(int)'
../../../../lib/libg2o_viewer.so: undefined reference to `qglviewer::Camera::draw(bool, float) const'
../../../../lib/libg2o_viewer.so: undefined reference to `qglviewer::Camera::deletePath(int)'
../../../../lib/libg2o_viewer.so: undefined reference to `QGLViewer::setMouseBinding(int,     QGLViewer::MouseHandler, QGLViewer::MouseAction, bool)'
../../../../lib/libg2o_viewer.so: undefined reference to `QGLViewer::setKeyFrameKey(int, int)'
../../../../lib/libg2o_viewer.so: undefined reference to `qglviewer::Camera::playPath(int)'
../../../../lib/libg2o_viewer.so: undefined reference to `QGLViewer::drawLight(unsigned int, float) const'
../../../../lib/libg2o_viewer.so: undefined reference to `qglviewer::Camera::resetPath(int)'
../../../../lib/libg2o_viewer.so: undefined reference to `QGLViewer::setAddKeyFrameStateKey(int)'
../../../../lib/libg2o_viewer.so: undefined reference to `QGLViewer::setPlayKeyFramePathStateKey(int)'
collect2: error: ld returned 1 exit status
make[2]: *** [../bin/g2o_viewer] Error 1
make[1]: *** [g2o/apps/g2o_viewer/CMakeFiles/g2o_viewer.dir/all] Error 2
make: *** [all] Error 2

I hope someone can help me solve the problem. Any suggestions are welcome. Thanks in advance.

jwlifly

2016-01-22 03:00:02 -0500 asked a question error compiling g2o about g2o_viewer

Hi,everyone,

  Recently, I have been
2016-01-22 02:46:55 -0500 commented answer 3D mapping using octomap + Kinect

sorry to answer you so late. you're right .After I remap the topic, it does work. thanks.

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2015-07-24 01:32:01 -0500 asked a question problems with OctoMap on ubuntu 12.04(groovy)

Hi,guys

I create 3D map using OctoMap , but I only can get the last frame not like the link http://ais.informatik.uni-freiburg.de... with kinect and hokuyo, which has annoyed me for a few weeks.

The octomap_mapping.launch is as following:

 <launch>
    <node pkg="octomap_server" type="octomap_server_node" name="octomap_server">
     <param name="resolution" value="0.05">

    <!-- fixed map frame (set to 'map' if SLAM or localization running!) -->
    <param name="frame_id" type="string" value="odom_combined" />

    <!-- maximum range to integrate (speedup!) -->
    <param name="sensor_model/max_range" value="5.0" />

    <!-- data source to integrate (PointCloud2) -->
    <remap from="cloud_in" to="/narrow_stereo/points_filtered2" />
   </node>
</launch>

When I use rxgraph , the type of topic /narrow_stereo/points_filtered2 is unknown and rostopic echo /narrow_stereo/points_filtered2 has no data output. the topic of pointcloud2 is octomap_point_cloud_center and the topic of markerarray is occupied_cells_vis_array.

I don't konw what is wrong. Hope someone can help me solve the problem. Thanks in advance.

cheers,

jwlifly

2015-07-22 02:56:05 -0500 asked a question 3D mapping using octomap + Kinect

hi , everyone i'm new to ros and i try to create a 3d map. Now I have a question about 3D mapping using OctoMap , which has annoyed me for a few weeks. Each time, I build a map with Microsoft XBOX 360 ,I always have the last scene not the global scene like the link http://ais.informatik.uni-freiburg.de... When I run the .launch file , I debug the programs using rostopic list , then use rostopic ehco /octomap_full etc , but no data outputs.

Also what more frustrates me is that topic /narrow_stereo/points_filtered2 remapped from cloud_in does not output data , which I think cloud_in is not output anything data or even octomap_server doesn't work at all . In rviz, when I choose the topic /octomap_point_cloud_centers of PointCloud2, there is no image , but /camera/depth/points or /camera/depth_registered/points does. Maybe the tf transform is not right,either.

I really don't know how to solve the problem. I hope someone can help me solve the problem. Any suggestion is appreciated. Thanks in advance.

The detail of list and launch file is following.

hustrobot@hustrobot-desktop:~$ roswtf WARNING: Package name "swig-wx" does not follow the naming conventions. It should start with a lower case letter and only contain lower case letters, digits and underscores.

No package or stack in context

Static checks summary:

No errors or warnings

Beginning tests of your ROS graph. These may take awhile... analyzing graph... ... done analyzing graph running graph rules... ... done running graph rules

Online checks summary:

Found 2 warning(s). Warnings are things that may be just fine, but are sometimes at fault

WARNING The following node subscriptions are unconnected: * /octomap_server: * /narrow_stereo/points_filtered2 * /hector_height_mapping: * /syscommand

WARNING The following nodes are unexpectedly connected: * /octomap_server->/rviz (/octomap_point_cloud_centers)

hustrobot@hustrobot-desktop:~$ rostopic list /camera/depth/camera_info /camera/depth/disparity /camera/depth/image /camera/depth/image/compressed /camera/depth/image/compressed/parameter_descriptions /camera/depth/image/compressed/parameter_updates /camera/depth/image/compressedDepth /camera/depth/image/compressedDepth/parameter_descriptions /camera/depth/image/compressedDepth/parameter_updates /camera/depth/image/theora /camera/depth/image/theora/parameter_descriptions /camera/depth/image/theora/parameter_updates /camera/depth/image_raw /camera/depth/image_raw/compressed /camera/depth/image_raw/compressed/parameter_descriptions /camera/depth/image_raw/compressed/parameter_updates /camera/depth/image_raw/compressedDepth /camera/depth/image_raw/compressedDepth/parameter_descriptions /camera/depth/image_raw/compressedDepth/parameter_updates /camera/depth/image_raw/theora /camera/depth/image_raw/theora/parameter_descriptions /camera/depth/image_raw/theora/parameter_updates /camera/depth/image_rect /camera/depth/image_rect/compressed /camera/depth/image_rect/compressed/parameter_descriptions /camera/depth/image_rect/compressed/parameter_updates /camera/depth/image_rect/compressedDepth /camera/depth/image_rect/compressedDepth/parameter_descriptions /camera/depth/image_rect/compressedDepth/parameter_updates /camera/depth/image_rect/theora /camera/depth/image_rect/theora/parameter_descriptions /camera/depth/image_rect/theora/parameter_updates /camera/depth/image_rect_raw /camera/depth/image_rect_raw/compressed /camera/depth/image_rect_raw/compressed/parameter_descriptions /camera/depth/image_rect_raw/compressed/parameter_updates /camera/depth/image_rect_raw/compressedDepth /camera/depth/image_rect_raw/compressedDepth/parameter_descriptions /camera/depth/image_rect_raw/compressedDepth/parameter_updates /camera/depth/image_rect_raw/theora /camera/depth/image_rect_raw/theora/parameter_descriptions /camera/depth/image_rect_raw/theora/parameter_updates /camera/depth/points /camera/depth/rectify_depth/parameter_descriptions /camera/depth/rectify_depth/parameter_updates /camera/depth_registered/camera_info /camera/depth_registered/disparity /camera/depth_registered ... (more)