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Cam Salzberger

Last seen: 8 giorni ago |  Active since 2015

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Answered
Questions about ROS2 code generation in simulink
Hello Xiaochen, I suspect that this issue is cause dby Windows' file path length limitations. File paths cannot be longer than ...

22 giorni ago | 0

Answered
handle class obj is getting only zero
Hello Zakaria, I'm not certain, but I suspect the issue is that you have this line: odomMsg =receive(odomMsg); The "odomMsg"...

circa un mese ago | 0

| accepted

Answered
ros2genmsg is failing after a updating database of messages and running a second time.
Thanks for those logs. The main issues are in the stdout_stderr.log file and all look like: make[2]: *** [CMakeFiles/vision_msg...

circa un mese ago | 0

Answered
How to pass a variable to my callback function through rossubscriber
Hello Zakaria, If you were to assign the NewMessageFcn subscriber property to just a callback function: odomSub.NewMessageFcn ...

circa un mese ago | 0

Answered
Map Difference between 2 maps
Hello Adrien, Typically, if you are just checking a few cell's occupancy values, you would use the "getOccupancy" method. But i...

circa un mese ago | 1

| accepted

Answered
time synchronize RosBag Data (Odometry and sensor values)
Hello Jefilia, The easiest thing to do is probably to "select" the rosbag down to the Odometry topic, then extract all of the m...

circa 2 mesi ago | 0

Answered
Lidar Labeler loads point clouds in the order returned by the dir function? How to sort the files?
Hello Sarang, I'm not sure about getting Lidar Labeler to load in a different order, or if this is the best way to generate poi...

circa 2 mesi ago | 0

| accepted

Answered
turtlebot3 can't receive message from matlab, but matlab can get data from turtlebot
Hello Hengxing, I've seen this kind of issue a few times, but usually in the reverse direction (MATLAB can't receive data). The...

2 mesi ago | 0

| accepted

Answered
Rosbag error "No definition for RedundancyInformation"
Hello Helder, Rosbags generally are supposed to contain message definition information that can be used to deserialize the mess...

2 mesi ago | 0

Answered
RMW Implementation questions in MATLAB R2022a
Hello Xiaochen, Here is a similar question I answered with relevant information, and links to other similar questions with addi...

2 mesi ago | 0

Answered
An error occurs when generating a custom message using rosgenmsg.
There were several people with the same or a similar issue, and the solutions that worked for them, in this answer thread. Pleas...

2 mesi ago | 0

Answered
ROS support for the universal robot UR16e
Hello Lara, This is mostly something that you would want to ask the Universal Robots team, as ROS generally relies on creators ...

2 mesi ago | 0

| accepted

Answered
Questions about ROS2 pubulsh blocks
Hello Xiaochen, Here are a couple of posts I've made previously to help with diagnosing and fixing communication issues with RO...

3 mesi ago | 0

| accepted

Answered
Fail to use ros2 node list to see the node run in another ubuntu machine~
Hello Shipeng, ROS 2 requires that the machines be on the same subnet, or explicitly include each other in the same network. Se...

3 mesi ago | 0

Answered
ROS Toolbox compatibility with Gazebo
Hello Alexander, There have been issues communicating between ROS 2 Dashing and Foxy for some users. Here is a page addressing ...

3 mesi ago | 0

| accepted

Answered
Setup ROS subscriber in Matlab
Hello Tristan, If the "receive" call is timing out, that is because it did not receive any data within the timeout period. Firs...

4 mesi ago | 0

Answered
real time pointcloud streaming in simulink on ubuntu
Hello Abirami, If you are broadcasting the point cloud data over the ROS network already, then you can simply create a rossubsc...

4 mesi ago | 1

| accepted

Answered
Setup ROS custom messages, problems with compiling
Hello Tristan, ROS custom message compilation requires Visual Studio 2017 or 2019. The MinGW C++ compiler will not work for cre...

4 mesi ago | 0

Answered
How does matlab send message to ros turtlesim
Hello Gabriel, If there is no communication between an external machine or VM and MATLAB over ROS, the issue is usually related...

4 mesi ago | 0

Answered
How to achieve "Get parameters" in simulink with ROS2?
Hello Xiaochen, Parameters are not yet available for use with ROS 2 in MATLAB or Simulink. They are on our radar as we work to ...

4 mesi ago | 0

Answered
I encountered an error ‘Error during service call, cannot get the state of the model’
Since that seems to have resolved the issue, copying my comment into an answer: Make sure to get a new VM as directed by this e...

4 mesi ago | 0

Answered
When subscribe and receive a topic in the ROS toolbox, it is still being processed.
Hello, This sounds like the topic is visible to introspection, but the subscriber isn't receiving any data. This is probably no...

5 mesi ago | 0

| accepted

Answered
Reading sensor_msgs/PointCloud2 data and visualizing the points
Hello Junaid, If you create a subscriber for the topic of interest, you can get the messages on that topic either in the subscr...

5 mesi ago | 0

Answered
How to import bag file with std_msgs/String
It looks like this topic is passing numeric data as a string, for some reason. My recommendation would be to preallocate a coupl...

6 mesi ago | 0

| accepted

Answered
<SOS> Unrecognized function or variable 'setOccupancy'.
Pretty sure this is the issue: show(setOccupancy) There is no variable by that name. I believe you mean "show(signFollower...

6 mesi ago | 0

Answered
Avoid plot title superimposing axis
What are you using to position the title so that it comes close to the axes labels there? By default, the title will be center-a...

6 mesi ago | 0

| accepted

Answered
Simulation Map Generator Error
Hello Nicholas, binaryOccupancyMap is the new name of robotics.BinaryOccupancyGrid, though the old way of calling it will still...

7 mesi ago | 0

| accepted

Answered
Received just one message when I used receive(sub, timeout) for rossubscriber
The receive function will only ever receive a single message, and returns immediately upon receiving that message. It is not a r...

8 mesi ago | 0

| accepted

Answered
convert BGRA8 image format to RGB format
Since the image data is coming out of a ROS message, you can use the ROS functions to extract the image from it: Message object...

8 mesi ago | 0

Answered
ROS - rosgenmsg: "The folder path, gradle-1.8, is invalid or the folder does not exist." R2018a - Linux
Edit: Moving this to an answer instead of comment. Hello Guillermo, In R2020a and prior releases, there are different instruct...

8 mesi ago | 0

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