can-43811's profile - activity

I am looking for log archival package which should be able to help me in based on below policy. (1) whenever log file (system.log) size >30859 or file is 3 day old then it should archive the same with new name system.log1 and again start the feeding the log in system.log file from start after truncating its content. I am going to write all the debug statements in log file through ROS c++ code in linux environment. Any immediate help will be appreciated.

error:

OpenCV Error: Unspecified error (could not find a writer for the specified extension) in imwrite_, file /temp/binarydeb/ros-kinetic-opencv3-3.2.0/modules/imgcodecs/src/loadsave.cpp, line 531
terminate called after throwing an instance of 'cv::Exception'

  what():  /temp/binarydeb/ros-kinetic-opencv3-3.2.0/modules/imgcodecs/src/loadsave.cpp, line 531: error: (-2) could not find a writer for the specified extension in function imwrite_

Aborted(core dumped)

while running my application i am facing openCE Error and my code is getting core dumped and halting my code execution , please provide fix for this issue asap.

Here is the code snippet.

           vector<int> compression_params; //vector that stores the compression parameters of the image

    compression_params.push_back(CV_IMWRITE_JPEG_QUALITY); //specify the compression technique

    compression_params.push_back(98); //specify the compression quality

    bool bSuccess = imwrite(jpegImage.c_str(), img, compression_params); //exception is received here

Below is the jpegImage name with .jpg extension .

string socket_server::jpegImage = "TestImage.jpg";

Regards Anjaneyulu

Hi, I want to how to communicate between two roscore . in my scenario one robot wants to invoke other robot's service but how to communicate them through their respective roscore so that roscore data can be hacked. How to perform book keeping on roscore about topics . so that on run time communication between one to another roscore can be configured .

Hi All, I want to know the exact data type of topic published. So in some scenario data type integer related information published under some topics or it might be image or string data. in some scenario published information under topic might be collection of some of the data types (int, bool, string, float, double) . so how to identify through command line or API what data type is published under particular topic.

I am looking driver code for Quanergy’s 3D LiDAR M8-1 sensors in ros kinetic , but couldn't find it the same.

i can only get reference for velodyne (3D Lidar) in github :

https://github.com/ros-drivers/velodyne

can anybody suggest where i should look for driver implementation of Quanergy’s 3D LiDAR M8-1 sensors.

Hi, As we can see that below API can be used for setting the default log level for console. can anybody suggest how to set the leg level for diagnostics.Here same i am expecting i.e. (ros::diagnostics_updater::levels::Debug)

ros::console::set_logger_level(ROSCONSOLE_DEFAULT_NAME, ros::console::levels::Debug)

Hi ,

I want to use paython package in c++ workspace as package available in paython not in c++ . Could you let me know the approach for the same . Is it advisable to use paython package in c++ workspace ? I don't have any experience in paython but want to use paython package so that information can be published through topics .

How to know from subscriber's end that publisher stopped the publishing data. in my subscriber code i am performing clean up operations and would like to know if publisher stopped publishing the data.Here i am publishing the data based on topic not a service so how to create link or notification between publisher and subscriber in case publisher stopped publishing data. Usually if publisher node is not publishing the data then subscriber node callback itself won't be called.

Hi All, I would like to know if ros provides to capture the memory and cpu utilization of all the running node. Usually rosnode all command will give the list of the all running node but not sure how to list the memory and cpu utilization of all the running nodes.does this facility provide by the ros framework ?

Hi All,

I am looking package for microphone (ekuilt) sensor. Could you suggest a good ros package for audio purpose.

Regards,

Hi, I am looking a package for monitoring the running node health status.Apart from this i should be able to start/stop/kill all (particular node) Could you please help in this regard.

Hi, I would like to know what is the API in roscpp which can be used whether particular node is active or not.

~can-43811