Can I detect the currently active nodelet?
I have a helper function that I want to calls `NODELET_INFO` within: void foo(int x) { NODELET_INFO_STREAM("X is " << x); } class MyNodelet : public ::nodelet::Nodelet { ... void...
View Articlewhat are the important design pattern used in move_base package?
My task is to modify the move_base (especially local planner DWA algorithm) according to the need of mine application. I have studied the C++, OOPs concepts and UML diagram representation. Now I am...
View ArticleI can't solve this problem urllib2.HTTPError: HTTP Error 500: Internal Server...
. Traceback (most recent call last): File "coffee_bot.py", line 298, in while(coffebot.deliver_coffee() and not rospy.is_shutdown()): File "coffee_bot.py", line 102, in deliver_coffee data =...
View Articledepth_image_proc for TYPE_8UC1 stereo images
Hi there, I found this cool package to process a disparity map, I got from a stereo camera pair, and compute a point_cloud:...
View ArticleCan I use MAVROS without connecting to a FCU?
Is it possible to use MAVROS to only convert messages from Mavlink messages to ROS messages and vice-versa? I do not want a connection to a FCU, like you are forced to have (I do not have a Mavlink...
View ArticleHow to write a custom Gazebo plugin for ROS ?
Hello! I was wondering how can I write a custom gazebo plugin for ROS , preferably in Python?
View ArticleGetting roll pitch and yaw from accelerometer, gyro and magnetometer readings
I am trying to get the roll, pitch, yaw data from my LMS9DS1 IMU sensor. My setup is this: The IMU data is read through the I2C of my arduino Uno. The accelerometer, gyro and magnetometer data are...
View ArticlePrint dynamic reconfigure default value in the launch log
Is there a way to print the default values of [dynamic reconfigure](http://wiki.ros.org/dynamic_reconfigure) in the roslaunch log, in the same/similar way parameters and node names get printed (like...
View Articleundefined reference to `StitchedMap::get_stitch()'
Hi everyone! I am new to ROS. I am trying to convert the Mapstitch package (https://github.com/tu-darmstadt-ros-pkg/mapstitch) from Rosbuild to Catkin. However, after I created a catkin package and...
View Articleroslaunch turtlebot3_gazebo mistake
I wrote this command in terminal: **roslaunch turtlebot3_gazebo turtlebot3_world.launch** But, this error has occurred in terminal: **[turtlebot3_world.launch] is neither a launch file in package...
View ArticleHow to transform the pose after map merge
Hi everyone! I am studying on cooperative simultaneous localization and mapping(C-SLAM). I found some tools like [Map Merger Tool](https://github.com/ahhda/Map-Merge-Tool) can help me to merge the maps...
View Articlehow to integrate ros with ns3(network simulaotr)
I want to forward uav location information in ros to ns3 ,then analyze uav communication status in ns3.
View Articlehow to integrate ros with ns3(network simulator)
I want to forward uav location information in ros to ns3 ,then analyze uav communication status in ns3.
View ArticleWhy almost SLAM are manual, not automatic to do this.
I have seen many PAPERs and used SLAM to build maps manually. Why not use auto?
View ArticleHow to setup face_recognition ROS (Indigo)
I am using Indigo on Ubuntu 14. My camera is Asus Xiton Pro. I have downloaded and setup the basic environment of face recognition package with success. My Fserver and Fclient are running. I am not...
View Articlecan I use sick_tim 510 with serial connection?
Hi, i am using sick tim 510 as side lasers of mobile robot. Ros package sick_tim works with usb connection, but i want to use the laser with serial (com port rs232) connection. What would be the best...
View ArticleMessage Size-dependent Queueing/Latency
ROS Indigo (and/or Lunar), Ubuntu 14.04 / Docker (ros-indigo-base, ros-lunar-base) I've noticed some delays up to 1/(publish_frequency) for medium sized messages. I've reproduced the behavior just...
View ArticleHow do you fix the inertial tensor if the values are all 0 (solidworks to...
Hi! I created a basic assembly in solidworks, and began the export process using sw2urdf by following the WPI Solidworks to Gazebo tutorial. However, I ran into an issue where the inertia tensor keeps...
View Articlelaunch move_base : error loading tag
hi , i'm trying to launch move_base backage and i used this launch file :  i get this error : *error loading tag: file does not exist...
View Articleimage stream using camera
Hello guys, My question might seem easy for many since i am still fresh in Ros and Opencv. I am following the tutorials provided on Ros Website. I am going through the tutorial ''Converting between ROS...
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