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Sean de Wolski


Last seen: Today

MathWorks

5,767 total contributions 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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Contributions in
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Answered
Shrinking image by averaging
This works img = repmat(1:6,4,1) shrink = @(x)reshape(sum(reshape(sum(reshape(x,2,1,[])),size(x,1)/2,2,[]),2)./4,size(x,1)/2,[...

4 hours ago | 0

Answered
Appdesigner uitable and uistyle
capital S in addStyle :)

5 hours ago | 0

Answered
Function 'daysact' not supported for code generation.
You should use the newer and recommended datetime / duration classes which support c-codegen: d = days(datetime(t1)-datetime(t2...

1 day ago | 0

Answered
Timer callback with alternating paths based upon which path was triggered before
You could use a simple persistent variable in your callback function to maintain state.

23 days ago | 0

| accepted

Answered
Is this right?
-4 v -5?

25 days ago | 0

Answered
Manipulating PowerPoint Custom Document Properties Using ActiveX
You should strongly consider using the MATLAB Report Generator to generate the presentations. It lets you use existing template...

1 month ago | 0

Published


Aircraft Intuitive Design
Richard is a Consulting Engineer at MathWorks focused on the Embedded Coder product for code generation,...

1 month ago

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Answered
Is there a script or app to convert many (>50) matlab figure files into powerpoint presentation??
You can do this pretty easily with the MATLAB Report Generator. Presentation Generator Development - MATLAB & Simulink (mathwor...

2 months ago | 0

Answered
Sorting time in 1 hour time slots.
Look at retime. doc retime

2 months ago | 0

Published


Emulating a physical experiment of measuring M&M’s
Jiro's Pick this week is M&M statistics by Lisa R. Thompson.A common challenge I hear from educators is how to conduct...

2 months ago

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Answered
please help with work
v = ["Not Valid" "Valid"]; v(isvarname(input('enter variable name: ', 's'))+1)

2 months ago | 1

| accepted

Answered
How to unit test several different functions that take the same input arguments efficiently?
Look into using TestParameters. You can use an array of function handles as the parameter values to traverse different function...

2 months ago | 1

Answered
colon operator in compiled python package
You should call the MATLAB module with a numeric input rather than a list. This is the data type conversion table. Use numeric...

2 months ago | 0

Answered
Enable/Disable uitabs in uitabgroup, with v2015b
In App designer this is possible by adding a panel inside the uitab and disabling the uipanel.

2 months ago | 0

Answered
Marker Symbol 'I' in plot
This capability was added in 20b. https://www.mathworks.com/help/releases/R2020b/matlab/release-notes.html?category=graphics&rn...

2 months ago | 0

Answered
Error in code.
It looks like you just copied someone's script that has the outputs as well as the code. You can't run the outputs.

2 months ago | 1

Answered
How can I get all possible coordinate from implicit function ?
zz = acos(-(cos(-5:5)+cos((-5:5).'))) % Check norm(cos(-5:5) + cos((-5:5).') + cos(zz))

2 months ago | 0

| accepted

Published


Avoid Overwriting Files!
Brett's Pick this week is Avoid file overwrite, by Simon Musall.ContentsA cautionary taleavoidOverwriteA cautionary taleSome...

3 months ago

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Published


R2020b: pattern (new way to regular express)
Jiro's Pick this week is the new pattern matching capabilities that were added in the newest release, R2020b.I've always had...

3 months ago

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Published


Simulink-to-Stateflow
Will's pick this week is Simulink-to-Stateflow by McSCert. Over the years, I've delivered dozens of talks on Stateflow, a...

4 months ago

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Answered
Does inpolygon work for latitudes and longitudes on the surface of the earth?
You need to project lat/lon into x/y using an appropriate projection for the region you're focused on. Then inpolygon (or polys...

4 months ago | 0

Published


R2020b: swarmchart
Jiro's Pick this week is swarmchart, a new visualization function in R2020b.Following Sean's post from last week, I'd like...

4 months ago

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Published


R2020b
Sean's pick this week is MATLAB R2020b by MathWorks Development. Our fall 2020 release...

4 months ago

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Answered
How can I suppress the output of another function that is called from my function?
Easiest way would be to pass an optional flag into incsearch that specifies whether it should display or not. function xb = i...

4 months ago | 0

| accepted

Answered
MATLAB Profiler - Granularity of Information
This got better in R2020a with the new interface to the profiler.

4 months ago | 0

Published


Interactive apps for solid mechanics
Jiro's Pick this week is Apps For Solid Mechanics by Ephraim Bryski.My day job is supporting educators and researchers...

5 months ago

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Answered
Remove rows duplicates based on a condition
MWE- use the 'stable' flag to unique if you care about order: x = [172 2 1; 134 3 2; 172 4 0.4]; [uv,~,idx] = u...

5 months ago | 0

Answered
Excercises for MATLAB programmimg
https://www.mathworks.com/matlabcentral/cody/?s_tid=gn_mlc_cody

5 months ago | 0

Answered
How can I run my functions from MATLAB in Python?
Try adding it to the MATLAB path from Python when you instantiate the engine (or navigate to the directory the file is in with e...

5 months ago | 0

| accepted

Answered
create a vector of 0 and 1s that takes 1 at a fixed interval
repmat([zeros(1,m), 1],1,5)

5 months ago | 0

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