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Cam Salzberger


Last seen: 2 days ago

MathWorks

432 total contributions since 2015

I am a Software Engineer at MathWorks, and a Mechanical Engineer by education. I specialize in Robotics.

In my free time, I enjoy hiking and parkour.

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Answered
rosactionclient failure due to version mismatch
I realize this question is from a while ago, but I wanted to put in an answer to catch anyone else running into the same problem...

5 days ago | 0

Answered
downloadPretrainedPointPillarsNet help
Hello Gustavo, I believe that command isn't a standard function in MATLAB, it's a helper provided with the example. You'll need...

9 days ago | 0

| accepted

Answered
Unrecognized function or variable 'asbQuadcopterStart'.
Aerospace Toolbox and Aerospace Blockset are two different products. That example is in Aerospace Blockset, which does not appea...

19 days ago | 0

Answered
rosgenmsg error in line333 MATLAB2020b
Hello Holden, You are providing the "package" folder to rosgenmsg, when instead it requires the parent folder of that. This is ...

19 days ago | 0

Answered
Can lost time when using 'waitfor(rate)' function be used for other tasks?
Hello Mohan, Generally the way to use rosrate is to put it at the end of a "control loop" - code that you execute every iterati...

20 days ago | 0

| accepted

Answered
Robotic Arm Trajectory Animation Using Robotic Toolbox
Hello Ahmetcan, The configuration solution output of calling the inverseKinematics object defaults to being a struct. If you wa...

1 month ago | 0

Answered
[Robotics Playground Toolbox Add-on] Error Message When Using Distance Sensor Block
Hello Benjamin, robotics.OccupancyGrid is the old name for the occupancyMap object. It is a valid alias, so if you try to use r...

2 months ago | 1

Answered
Why does the ROS MATLAB connection via topic receive command (ROS-Toolbox) not work in R2020a but in R2020b
Hello Oliver, The most common reason for being able to see rostopic, but not being able to receive messages from one or other o...

2 months ago | 1

Answered
Populating ros messages is slow
Hello Mauro, Cause of Performance Issues Accessing Nested Messages (pre-R2020b) Based on your other question, I assume you ar...

2 months ago | 1

| accepted

Answered
Importing ROS bag file of LIDAR scan into Matlab as point cloud structure
So you have the XYZ points from the PointCloud2 message after you use readXYZ, and you want to get it in the format of the point...

2 months ago | 0

Answered
Matlab Ros Gazebo Add force to Ball
Hello Philipp, There is an issue with the specific service definition that is used in that call command. We are working on a re...

2 months ago | 0

Answered
MATLAB2020b/ROS interface - Unrecognized function or variable 'pythonPkgSrc'
Hello all, Here is the bug report published for this issue. This issue is fixed in R2020b Update 2, so installing that or later...

2 months ago | 1

Answered
Error when trying to view a variable
Hey David, I have a suspicion that there is either a variable in your workspace, or a function/script in your current folder/pa...

2 months ago | 0

| accepted

Answered
Moving object in a defined environment
That's not so much a question about "getting started" as it is about "doing a large project for me". Try breaking down the probl...

3 months ago | 0

Answered
ROS toolbox (ROS2 bag)
Hello Jesús, It is not possible to read data out of ROS 2 bag databases using R2020b. There is a lot of focus on ROS 2 now thou...

3 months ago | 1

| accepted

Answered
How can I run rosgenmsg from Linux system prompt with -nodisplay option?
Hello Andreas, Suvansh, If you do the -nodisplay option on the machine that it did work on, did it work then? There are two pos...

3 months ago | 0

Answered
Unrecognized Function or Variable
You are using x1 in your calculation for y1 before you ever define x1. Flip the order of those two lines. It might have worked ...

3 months ago | 0

Answered
2D motion planner with a minimum safe distance
Hello Fedi, I believe that the usual workflow for this is to simply inflate the occupancyMap by your minimum safe distance (plu...

3 months ago | 0

Answered
matlab 2020b rosgenmsg can't find CMake?
Hello Anton, R2020b involved a large replacement of the ROS functionality in MATLAB. As you have found, it supports rosgenmsg n...

3 months ago | 0

| accepted

Answered
ROS2 Simulink Toolbox not publishing
Hello Natasha, OSRF has made changes to the way communication through ROS 2 is done in Foxy that results in it being incompatib...

3 months ago | 0

Answered
Remove a line from a plot in UIAxes App Designer
Hello Dario, The misunderstanding here seems to be that everytime this function is being called, the workspace inside of the fu...

3 months ago | 1

| accepted

Answered
Checking index numbers against non-contiguous file names
Hello Natalie, I'm making some guesses about what you are looking for here. The situation is that you have these files in a sin...

4 months ago | 0

| accepted

Answered
interaction with data cursor in data inspector
It sounds like you want to have have two plots, one time-domain plot that you interact with using the data cursor, and one x-y p...

5 months ago | 0

Answered
In MATLAB Grader, how can I assess students' output? All I can do is to compare variables or keywords
Hello Hyunjee, As you specify the code to call the student's provided functions or scripts, you could call it within an evalc c...

6 months ago | 0

Answered
Difference between Matlab and Wolfram Alpha
Hey Niklas, Technically, both pi and 4 are "correct" results, as if you plug them in, they will fulfill the condition. I think ...

6 months ago | 0

Answered
How do I use add_block for adding ROS library content like Blank Messages, Publish and Subscribe block programatically using Simulink? (Using MATLAB R2019a)
Hey Akshay, I haven't tested this, but I believe that you should use (or at least can use) the library name that contains the b...

6 months ago | 0

| accepted

Answered
Error using ros.ros2.internal.createOrGetLocalPython
Hello Alexander, There is unfortunately an issue with the current documentation, which should be updated soon. Instead of Pytho...

6 months ago | 0

| accepted

Answered
Netcdf error in Matlab2019a
Hey Robert, I haven't encountered this specific issue, but I have seen similar issues of system commands not working exactly th...

6 months ago | 0

| accepted

Answered
Cross platform/OS deployment of compiled applications
Harish, Doesn't look like you can move compiled applications cross-platform. This makes sense, since the compiler generates an ...

6 months ago | 0

Answered
Too many output arguments ERROR
Keir, The fwrite method for that object doesn't seem to return an output argument. Always try to make sure that you are both us...

6 months ago | 0

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