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Sean de Wolski

MathWorks

Active since 2004

I like to be outside. But if I'm inside, I like to be using MATLAB.

I'm a Senior Application Engineer at MathWorks and civil/structural engineer by education.

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Answered
Call a MATLAB function from .NET program
https://www.mathworks.com/help/releases/R2021b/matlab/matlab_external/call-matlab-function-from-c-client.html

10 days ago | 0

Answered
Generating an STL of a paraboloid surface made out of hexagons
1) yes 2) Look at stlwrite and triangulation.

12 days ago | 1

Answered
surf indices reversed?
I think you're seeing the difference between meshgrid and ndgrid. Meshgrid is used for plotting, ndgrid for matrix/tensor work ...

23 days ago | 1

Answered
Sending input() from Python API
This works if you start the MATLAB engine with the desktop: import matlab.engine eng = matlab.engine.start_matlab('-desktop'...

25 days ago | 0

Answered
How can I iterate across the opposite diagonal?
full(flip(gallery('tridiag', 8, 4, 6, 4), 2))

29 days ago | 0

Answered
How Can I create a function as a string
function grade=mygrade(grade) arguments grade(1,1) string = input('Write the grade:';'s') end grade = lo...

1 month ago | 0

Answered
how to change back to the right base for answers?
Or just call format short

1 month ago | 0

Answered
Run Python script with numpy and pandas in Matlab
The python that MATLAB is calling apparently does not have numpy installed properly. Check your system path for the version of ...

1 month ago | 0

Answered
How can I solve x^4-1=0
x = 1

2 months ago | 0

Answered
Python Matlab engine - Cannot read simulink output
Extract the simout to a timetable, then pass the timetable back to python either via writing to disk as a CSV, or converting to ...

2 months ago | 0

Answered
Convert Python list Type to MATLAB double
q = py.list({1,2,3}) cq = cell(q) [cq{:}]

2 months ago | 0

Answered
Display image using HTML within app designer does not work
One way to do this is to explicitly base64 encode the image data. Here's an example for PNG file, you'd have to change the HTML...

2 months ago | 0

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Answered
Create table in a for loop with text
Confused as to why you're using excel ranges with csv input. Either way, this should be doable in one shot with readall(datasto...

2 months ago | 0

Answered
Integration using Cumtrapz backwards instead of forwards
Easy solution is to just flip everything L_dist =[10 9 8 7 6 5 4 3 2 1 0]; locations=[0 1 2 3 4 5 6 7 8 9 10]; shear.z = fl...

2 months ago | 0

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Answered
How execute a jar generated with Compiler SDK from windows prompt.
I'd strongly recommend that you create a "sample" with the Compiler SDK. Then the output will contain a getting started guide w...

2 months ago | 0

Answered
Is the LiveScript Editor Connected to the Base Workspace?
The red pause button is any execution, not just execution from the live editor.

2 months ago | 0

Answered
Error when executing MATLAB app methods via parfeval and BackgroundWorker pool.
MainFunc should be an external function you call and not an app class method. The app can update itself with the results of the...

2 months ago | 1

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Answered
creating a PDF report using simulation results.
I'd strongly encourage you to look at the report generator task examples and specifically the tables section. https://www.mathw...

2 months ago | 0

Answered
Remove the Last Entry of Many Fields of a Structure
data.test1=1:10; data.test2=3:12; data.test3=2:11; data.test4=1:10; data.test5=2:10; data.test6=4:12; data.test7=5:13; n ...

3 months ago | 0

Answered
How to find pythagorean triangle's hypotenuse in a matrix?
This will be the most numrically stable. a = [5 8 12 3; 8 12 63 20; 9 84 144 20; 24 11 15 180]; b = [12 6 5 4; 15 35 16 21; 40...

3 months ago | 2

Answered
Use icons of different shapes for push button in AppDesigner
You could use a uiimage instead. Then set it's ImageClickedFcn instead of ButtonPushedFcn callback.

3 months ago | 0

Answered
(Need Help) nlmpc (nonlinear model predictive control) in Simulink for code generation
The command from MATLAB you'll want to use is nlmpcmoveCodeGeneration Compute nonlinear MPC control moves with code generation...

3 months ago | 0

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Answered
How to parse file name text and save values to variables
Look at various combinations of the following functions split contains matches extractBetween, extractBefore, extractAfter

3 months ago | 0

Answered
Modify attributes of inherited property
You could instead author your own class that passes through to a mechss object it stores as a private property. Then you can ca...

3 months ago | 1

Answered
With 2021b's New Python Functionality, is there a way to view an interpreter's output?
>> pyrunfile('foo.py') % saving as foo.py, changing folder, and commenting broken on_moved Modified Item C:\Documents\MATLAB\Sc...

3 months ago | 0

Answered
empty array size is stuck on 1x3
You may want to look at gpxread. Read GPX file - MATLAB gpxread (mathworks.com)

3 months ago | 0

Answered
Fill background pixels with the value of the nearest foreground pixel
Hi Matt, The second output from bwdist is the index of the closest pixel. I think this is all you need to then index back. [~...

4 months ago | 0

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Answered
How to activate bubble chart
Bubblechart was added to core MATLAB in R2020b. You'll need to upgrade to this release or find a variant on the file exchange.

4 months ago | 1

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