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Sean de Wolski


MathWorks

5,552 total contributions since 2004

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

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

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Answered
Given an instance of a class (without knowing class name), how to call the constructor?
Might you be interested in inheriting from matlab.mixin.Copyable which gives you a copy method?

2 days ago | 0

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Answered
AlphaShape: incorrect geometry
How about pointlocation?

8 days ago | 0

| accepted

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How do i copy the content of a folder into another folder.
doc copyfile doc dir doc fullfile Use dir to get the file name and current path, fullfile to build the old and new full file ...

8 days ago | 0

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How to add a hyperlink of a pdf file within Simulink?
Insert a text box, a link, and then use MATLAB code with open('your_pdf_file.pdf')

8 days ago | 0

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Undefined variable "vision" or class "vision.HoughTransform".
Do you have the computer vision system toolbox installed and licensed? ver

14 days ago | 0

Published


Get your key press
Jiro‘s pick this week is getkey by Jos.Here’s an entry from a long-time user. Honestly speaking, I’m surprised why this...

18 days ago

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Can you detect when a title is added to a plot?
If the axes already exists, this seems to work ax = axes addlistener(ax.Title,'String','PostSet',@(~, ~)disp('hi')) title('He...

21 days ago | 0

Answered
From char to timetable
How are you creating the char? Reading it from a file? If you're reading it from a file, then look at importing with fixed wid...

22 days ago | 0

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Published


HDL Coder Tutorial and Evaluation Reference Guide
Curie’s pick of the week is – actually, make that plural! My picks are the HDL Coder Tutorial and HDL Coder Evaluation...

26 days ago

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Answered
MQTT subscribe callback function not executed in AppDesigner
(This is a guess) When the function exits, the mObj and mySub are destroyed. Set them to be properties of the app (add propert...

27 days ago | 1

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Answered
Data Analysis advance filtering
Tested in R2018b. May need to convert strings to cellstrs in older releases. %% Sample data Data = array2table(rand(2,200))...

29 days ago | 0

Published


Beating (Cartoon) Heart
Sean‘s pick this week is Beating (cartoon) Heart by Nathaniel Barlow. In the spirit of celebrating Valentine’s day with...

1 month ago

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Answered
Undefined function or variable 'analyzeNetwork' error in transfer learning.
In 18a, you had to download it from the web I believe and then it came built in in 18b. Get it here https://www.mathworks.com/m...

1 month ago | 0

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Draggable Data Tips
Jiro‘s pick this week is DragDataTip by Allen.Here’s a simple, but quite useful utility to use in conjunction with MATLAB’s...

1 month ago

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Answered
What does this icon mean when parallel computation is using?
The amount of green columns is trying to show the current utilization of the workers in the parallel pool. If you have 16 worke...

1 month ago | 0

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Answered
Help to convert a slx file to a previous version!
exportToVersion (Can also be accessed from the file menu > export > to previous version)

1 month ago | 0

Answered
Absolute Value in optimization expression
Square it instead so as to not introduce a discontinuity (expr).^2

2 months ago | 0

Published


Comprehensive, easy-to-use particle image velocimetry tool
Brett‘s Pick this week is PIVLab, by William Thielicke. Contents A Particle Velocimetry Suite of Tools! A video...

2 months ago

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Answered
SciLab to Matlab transfer impedance code issue
abort should be break

2 months ago | 0

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How can I add Python Package in MATLAB library Compiler?
What version of MATLAB are you using? I believe the Python option was added in 15b.

2 months ago | 0

Answered
Table array with numerical row names
You could use matlab.lang.makeValidName to make valid names for each one. However, for the numeric case, this just adds x so y...

2 months ago | 1

Answered
How to increase non virtual blocks limit more than 1000 in matlab student version
Falguni, you should inquire with your university IT department to see if they have academic licenses available which do not have...

2 months ago | 0

Published


Distance from Points to Polyline or Polygon
Sean‘s pick this week is Distance from points to polyline or polygon by Michael Yoshpe. I recently had a problem where I...

2 months ago

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Answered
Browse, search, click , save?
Look at webread, you don't need to open the browser to get the html output from the search. If you want a human to enter the co...

2 months ago | 0

Answered
Looping through command mkdir
for ii = 1:10 mkdir("Scenario" + x) end

2 months ago | 0

| accepted

Answered
why cant I run the dataset functions now?
Also note that the table datatype released in 13b in base MATLAB is the replacement for dataset and does not require additional ...

2 months ago | 0

Published


Live Script Gallery and “Run in Browser”
Jiro‘s pick this week is the Live Script Gallery.I’m going a bit out-of-model today to highlight a new page that became...

2 months ago

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Answered
Flipping specific segment of string rather than the whole string
str=join(reverse(split("One two buckle my shoe")))

2 months ago | 0

Answered
Finding the spectrums of three segments of a signal without using the 'fiindpeaks' function?
doc pwelch doc islocalmax doc islocalmin

2 months ago | 0

Published


GPS Visibility Predictor
Will‘s pick this week is GPS Visibility Predictor by Eric Ogier. The first demo I built upon joining MathWorks was a...

2 months ago

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