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
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 hours ago | 0

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...

6 days ago | 0

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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...

10 days 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...

10 days ago | 0

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

12 days ago | 0

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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...

18 days ago | 1

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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...

20 days ago | 0

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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 ...

21 days 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...

21 days 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.

23 days ago | 0

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(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...

27 days 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

27 days 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...

27 days 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...

1 month ago | 0

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

1 month ago | 0

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When there's an error in a function triggered by Appdesigner, how to stop execution before app management?
dbstop if caught error

2 months ago | 0

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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. [~...

2 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.

2 months ago | 1

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Restore old editor in R2021b?
I changed these settings and it greatly improved the font for me: s = settings; s.matlab.fonts.custom.editor.FontToUse.Persona...

2 months ago | 0

Answered
Adding bulleted list to PowerPoint using MATLAB Report Generator
The template should not be a pptx file but a potx file.

2 months ago | 0

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Convert String to numbers
s = ["0001" "0002"] n = double(s)

2 months ago | 0

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MATLAB App Testing - Confirmation dialog boxes
You can dismiss and alert but not a confirmation dialog yet. Capability for alerts added in 21a. https://www.mathworks.com/h...

3 months ago | 1

Answered
Code conversion using matlab coder
Being pedantic, you should NOT be using scripts but functions for everything. So step 1 is convert everything to functions. Re...

3 months ago | 0

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Answered
removing an entire row
grace = s(s(:,3)~="fred",:)

3 months ago | 0

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Answered
How to trigger an App Designer UI component's callbacks programatically, like `notify()`
Do you want to do this in the scope of testing, or to reuse the functionality of the button callback? For the former, look at m...

3 months ago | 0

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How to implement an API REST POST in Matlab
Look at either: weboptions('RequestMethod','post') or doc webwrite

3 months ago | 0

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Answered
2d interpolation of n-dimensional data
You can just change the Values of one scatteredInterpolant object. It won't have to redo the expensive underlying triangulation...

3 months ago | 0

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Answered
Why does this example from MathWorks work on Windows but not on Mac?
which -all plot It's not win v. mac but that you've shadowed plot on the failing machine.

3 months ago | 0

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Answered
which one is better?deep learning toolbox or matconvnet
Matconvnet hasn't been updated in 3 years. Deep Learning Toolbox has dozens of full time staff working on it, improving it, and...

3 months ago | 0

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How to become a staff if you are among the big potatos of mathworks in the answer community?
Hi Wan Ji, I'd be happy to refer you to a MathWorks position. I got my referral from someone who observed me answering questio...

3 months ago | 0