Creesy's profile - activity

ok yes was stuck in my brain there.

Hello there,

I have a node in ros publshing data of type Measurement2 which is used for RN Sensors. The problem wit the Datatype is that it publishes several different Values like you can see here:

header: 
  seq: 36
 stamp: 
    secs: 1531906243
    nsecs:  20823955
  frame_id: "wifi_adapter"
device_name: "simulated"
device_designation: "wifi_adapter"
classification: "W"
values: 
  - 
    sensor: "Elrob-RN-1"
    source: "wifi signal strength"
    type: "wifi signal strength"
    value: [-30.0]
    unit: "dBm"
    min: 0.0
    avg: 0.0
    max: 0.0
    alert_level: 0
    alert_explanation: ''
    substance: []
    info: "Freq. 2.457 GHz mode: Master address: 08:EA:44:7A:FA:55 quality: 70/70 signal: -30.0"

I want to filter out the value of the signal and frequency from the broadcasted topic and then show it in rviz at the current position of my robot but I havent found a way yet how to extract the data and modify it so I can show it colorcoded on the created map in rviz

edit: thanks for editing the post to look better I somehow didnt get it to look straight

EDIT1:

My setup is a roboter with Laserscanners and RGBD Cameras to create a 2D and 3D map of its surroundings. Now I have to make something like a heatmap to show where strong signals occur on this generated maps. For this I need to extract specific Data from the topicoutput shown above. Especially i need the signalstrength and frequency data from the whole dataset.

from the ros tutorial the basics

As I understand it @matlabbe has just a topic with a single output there which just broadcasts the current strength of t

Extract specific Data from topic Hello there, I have a node in ros publshing data of type Measurement2 which is used fo

Yes kinda, the wifi signal strength should simulate radioactive fallout and I need the values of the signalstrength and

Extract specific Data from topic Hello there, I have a node in ros publshing data of type Measurement2 which is used fo

Extract specific Data from topic Hello there, I have a node in ros publshing data of type Measurement2 which is used fo

Ahh thanks for that. im working with rtabmap but i will try the suggested slam packages. thanks.

the part with building all the files seems to have worked now. currently my biggest problem is: how do i get the camera

Unknown CMake command "catkin_run_tests_target" Hello, i am currently working to get packages working and activating the

ok thank you very much. I will try the first solution for the beginning, but since there will be other packages from my

Unknown CMake command "catkin_run_tests_target" Hello, i am currently working to get packages working and activating the

Unknown CMake command "catkin_run_tests_target" Hello, i am currently working to get packages working and activating the

Unknown CMake command "catkin_run_tests_target" Hello, i am currently working to get packages working and activating the

Unknown CMake command "catkin_run_tests_target" Hello, i am currently working to get packages working and activating the

Unknown CMake command "catkin_run_tests_target" Hello, i am currently working to get packages working and activating the

Unknown CMake command "catkin_run_tests_target" Hello, i am currently working to get packages working and activating the

Unknown CMake command "catkin_run_tests_target" Hello, i am currently working to get packages working and activating the

Unknown CMake command "catkin_run_tests_target" Hello, i am currently working to get packages working and activating the

Unknown CMake command "catkin_run_tests_target" Hello, i am currently working to get packages working and activating the

should I maybe deinstall all ROS related files and reinstall everything? could that be a thing that i installed too much

I tried following the instructions during the installing of the packages but to be honest i have mostly no real clue wha

ok i will try my best here. So i do have catkin_ws/src/operator_ws and catkin_ws/src/realsense2.0.3 I think those are 2

OK I used your suggestions about removing build and devel. now when i try to redo the steps for making the directories I

yeah if it prevents me from using the different packages for the robot then definately not desired. im currently trying

operator_ws path are multiple ros packages for the robot we are using. it could be that i have multiple workspaces since

i managed to get rid of the first problem i had by opening a new terminal with gedit ~/.bashrc & and then outcomment

i managed to get rid of the first problem i had by opening a new terminal with gedit ~/.bashrc & and then outcomment

Unknown CMake command "catkin_run_tests_target" Hello, i am currently working to get packages working and activating the

Unknown CMake command "catkin_run_tests_target" Hello, i am currently working to get packages working and activating the