serhat's profile - activity

rosbag::RecorderOptions and rosbag::Recoder specifying directory for bag files Hi all, I have a problem about a class

rosbag::RecorderOptions and rosbag::Recoder specifying directory for bag files Hi all, I have a problem about a class

rqt_console shows the same message twice? Hi all, I have a problem about the rqt_console specifically in the bag files.

Hi all, I have a problem about the rqt_console specifically in the bag files. When I open a bag file typing rosbag play test.bag, rqt_console starts showing the all messages streaming in the bag file. Btw, I want to see the DEBUG messages in the bag file. In order to do that, I changed the logger level of the talker_node before the time I started rosbag record -a. With this conditions, when I open the bag file, rqt_console shows the same message twice. And it's a bit annoying while debugging. I give the related code(talker_node) and rqt_console screen below for you to observe better. I see this problem only watching bag files. How can I solve this problem? Or where I make wrong? ROS1 Kinetic Ubuntu 16.04 Related Code:

   int count = 0;
   while (ros::ok()) // Keep spinning loop until user presses Ctrl+C
   {
      //create a new String ROS message.
      //Message definition in this link http://docs.ros.org/api/std_msgs/html/msg/String.html
      std_msgs::String msg;

      //create a string for the data
      std::stringstream ss;
      ss << "Hello World " << count;
      //assign the string data to ROS message data field
      msg.data = ss.str();

      //print the content of the message in the terminal
      ROS_INFO("[Talker - INFO] I published %s\n", msg.data.c_str());
      ROS_DEBUG("[Talker - DEBUG] I published %s\n", msg.data.c_str());

      //Publish the message
      chatter_publisher.publish(msg);
      count++;
      loop_rate.sleep(); 
   }

Picture of the problem:

Hi Mike, thanks for the comment. Let me try to make it more clear: void imu_Callback(std_msgs::Float64 input) //One of

ros::spinOnce and timeout Hello all, I have a problem about ros::spinOnce. My main algorithm's frequency is 25 Hz. So,

Hi @Shoukat.M, my solution is defined above actually, there is no addition step besides those I typed. Which particular

Hi everyone, I tried to use "range based for loop" and "lambdas" in my programs. Everything was fine in fact. My IDE didn't throw any error or warning at all. After "catkin_make", I see some warnings in my terminal which says:

/home/serhathp/catkin_ws/src/tcp_edu/src/trial_06.cpp:41:9: warning: lambda expressions only available with -std=c++11 or -std=gnu++11
         }
         ^

and same for "range based for loop" method. How can I handle this issue? What version of compiler do I use in my system? I typed some code in my program related to this issue:

   if (__cplusplus == 201703L) std::cout << "C++17\n";
    else if (__cplusplus == 201402L) std::cout << "C++14\n";
    else if (__cplusplus == 201103L) std::cout << "C++11\n";
    else if (__cplusplus == 199711L) std::cout << "C++98\n";
    else std::cout << "pre-standard C++\n";

As an output, I gave C++98. Maybe this would be useful information I don't know. Probably related to this issue, I can't use "range based for loop" correctly if I run my program. (I can compile my program actually) It doesn't work like it should! Any relationship? How can I change my compiler version in my system. I want it to be C++11 especially. I'm kind of confused and new at this environment. Any help?

UBUNTU 16.04 - Kinetic - Ros1. I use Visual Studio as IDE.

Thank You!

Hi @Heho, I think the problem is related to rosmaster/roscore. When we make log files, all messages get recorded during

I had the same problem and solved the issue with this answer. Thank you! I did this change below in my move_base.launch(

Hi all, I have been dealing with slam_gmapping package and I have reached good results so far.(I created my map by the package) But I have a question about sensor_msgs/LaserScan.msg specifically. For describing my problem a lot faster, I want you to look at the picture below. In the picture, you can see my /scan topic and a view of Rviz. When you look at the /scan topic, I selected some of those ranges data where start off with the value of 65.53399. You can clearly see the relevant points in the Rviz screen too since they are far away from average measurements. As I pass such scan data into slam_gmapping package, the map is not created well.

I believe that the value of 65.53399 in the /scan topic is used for failed scan data or something like that. I should not take these measurements account in the context of creating a map. But how? In the LaserScan.msg there is an explanation goes like that:

float32[] ranges # range data [m] (Note: values < range_min or > range_max should be discarded)

What I should understand of discarding data in the ranges std::vector? What value I should give for such failed/max data instead of leaving them as they are? Any idea or useful links? Thank you all in advance!

Hi all, I did an amendment according to this documentation(REP-117: Informational Distance Measurements) in my program.

Hi all, I did an amendment according to this documentation(link text) in my program. I added a if-statement like below.

Hi gvdhoorn, thank you for your reply. I will work on the links you shared to improve my program. I appreciate. I use t

Hi siddharthcb, thank you for your reply. I write the scan program by myself. I don't use any launch file or library. In

sensor_msgs/LaserScan.msg ==> range_max should be discarded Hi all, I have been dealing with slam_gmapping package an

Hello all, I found my problem. With the help of what the compiler says, I focused on this part: error: no match for cal

Action Server Compiler Error => error: no match for call to ‘(boost::_mfi........ Hi all, I have a problem about cr

Hello, I have been working with navigation stack for a while without any problem but now, i am facing compiler error written below

make[2]: *** No rule to make target '/usr/lib/x86_64-linux-gnu/libproj.so', needed by '/home/serhatsony/catkin_ws/devel/lib/libcostmap_2d.so'.  Stop.
CMakeFiles/Makefile2:20521: recipe for target 'navigation/costmap_2d/CMakeFiles/costmap_2d.dir/all' failed
make[1]: *** [navigation/costmap_2d/CMakeFiles/costmap_2d.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....


make[2]: *** No rule to make target '/usr/lib/x86_64-linux-gnu/libproj.so', needed by '/home/serhatsony/catkin_ws/devel/lib/libcostmap_2d.so'.  Stop.
CMakeFiles/Makefile2:20521: recipe for target 'navigation/costmap_2d/CMakeFiles/costmap_2d.dir/all' failed
make[1]: *** [navigation/costmap_2d/CMakeFiles/costmap_2d.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....

I guess, the problem is related to 'some update situtation'. I had executed these two commands: sudo apt-get update sudo apt-get upgrade

any relationship? Or how can i solve this problem? Thank you! UBUNTU 16.04 - Kinetic (I have uploaded directly navigation stack with the branch of kinetic-devel )

compiler error while processing libcostmap_2d.so Hello, I have been working with navigation stack for a while without an

compiler error while processing libcostmap_2d.so Hello, I have been working with navigation stack for a while without an

rqt_console shows the same message twice? Hi all, I have a problem about the rqt_console specifically in the bag files.

rqt_console shows the same message twice? Hi all, I have a problem about the rqt_console specifically in the bag files.