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Sean de Wolski


MathWorks

5,590 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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Answered
How can I define a homogeneous cell array with elements of a fixed size?
Why bother using a cell array v. a 3d array of size [dims1 dims2 N]?

11일 ago | 0

Published


Beer Me!
Sean‘s pick this week is beerme by bheinle7. Have you ever looked at your MATLAB Apps tab and been sad? Even though the...

29일 ago

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Alluvial flow diagram
Jiro‘s Pick this week is Alluvial flow diagram by Alexander Carmeli.I give credit to Yair for bringing this entry to my...

약 1달 ago

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AIS Decoder
Idin‘s pick this week is AIS Decoder by our former colleague Mike Donovan. This example shows how to decode automatic...

약 1달 ago

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Answered
How to call external C++ function from Matlab
Starting in 19a, you can call C++ libraries directly in MATLAB: https://www.mathworks.com/help/releases/R2019a/matlab/call-cpp-l...

약 2달 ago | 1

Answered
How to convert cell array of characters to a datetime array without looping through each cell individually?
Converting the cellstr to a string makes this much easier: cellDates = {' " 8 / 2 4 / 2 0 1 8 8 : 5 9 : 1 8 A M " ';... ...

약 2달 ago | 1

| accepted

Answered
How can I upload files to the App Designer? Can files be uploaded in a web application?
Support for uigetfile() to upload local files to a web app was added in R2018b.

약 2달 ago | 1

| accepted

Published


Memory Info
Sean‘s pick this week is Memory Info by Sviatoslav Danylenko. Have you ever wanted to get the current memory used by MATLAB?...

약 2달 ago

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Answered
Sending SIMULINK cache files to another folder
In the Simulink Preferences (from home tab>preferences)

약 2달 ago | 0

Answered
Unhide code in Live Script
Install Update 2 (should appear in upper right hand corner of desktop if online), it fixes this bug.

약 2달 ago | 0

Published


ThingSpeak functionality ships with R2019a
Jiro‘s Pick this week is ThingSpeak Support Toolbox by MathWorks Internet of Things Team.ThingSpeak is MathWorks’ IoT...

약 2달 ago

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Answered
Generate searchable documentation for MATLAB Packages(Namespaces) and Classes
I've always exported the html from the autogenerated doc page: doc mypack.myclass Or written a Live Script that documents the ...

2달 ago | 0

Published


What’s Your Color Scheme?
Brett‘s Pick this week is MATLAB Schemer, by Scott Lowe. Contents Easy manipulation of your MATLAB color scheme! MATLAB is...

2달 ago

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Answered
How to replace arbitrary groups of matrix entries in a vectorized way?
<edited> A simple for-loop will likely be the fastest and most comprehensible way to do this. For-loops are plenty fast in MAT...

2달 ago | 0

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Answered
MATLAB start up option -batch no recognized
The -batch option was added in R2019a.

2달 ago | 1

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Answered
Error using Classificationlearner model in Simulink
Unfortunately this workflow is more painful than it should be. I've found the best set of steps is to: Generate the code for t...

2달 ago | 0

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Answered
timetables stored within a 1x1 cell array within a .mat file
No. Timetable shipped in R2016b; you'll need to upgrade.

2달 ago | 0

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Published


Getting Started with MATLAB examples
Jiro‘s Pick this week is the example files used in the “Getting Started with MATLAB” video by one of my colleagues, Matt...

3달 ago

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Answered
Problem with "datenum" and "datetime" functions
I was able to reproduce this by copying your code from above. It appears the opening ( is bad (right where the arrow is) datet...

3달 ago | 0

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Convert between RGB and Color Names
Will‘s pick this week is Convert between RGB and Color Names by Stephen Cobeldick. A fairly common challenge I encounter is...

3달 ago

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Answered
How to show an image using the stored vector (matrix) as a variable in the report generator
You could use: imshow(loadedimage) add(R, Figure()) In general I'd stick with Image even if though requires imwriting your im...

3달 ago | 1

| accepted

Answered
Is it possible to organize parfor outputs based on the "thread" number?
parfor ii = 1:10 t = getCurrentTask disp(t.ID) end

3달 ago | 0

Answered
How to make a graph with nodes and edges
What version of MATLAB are you using? graph() was introduced in R2015b

3달 ago | 0

| accepted

Answered
turning legend off in xline function
myxline = xline(10,'r',"Hello") myxline.Label = "" myxline.DisplayName = "" Disable the label and/or DisplayName.

3달 ago | 1

Published


MATLAB Projects
Sean‘s pick this week is MATLAB Project File by Dmitry Ratner and the new Projects functionality in base MATLAB added to...

3달 ago

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Answered
How can I average datetimes of my array?
Look at the retime() function for a timetable.

3달 ago | 0

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MATLAB Grader Test (Assessment) Generator
Jiro‘s Pick this week is MATLAB Grader Test Generator by Robin T. Bye.MATLAB Grader is a web service product available for...

3달 ago

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Answered
How to remove artifact (“shadow” causing blurry areas) from 3D CT-data
I'd use a multipass set of global and adaptive thresholds. You can adjust the sensitivities and thresholds as necessary. I = i...

3달 ago | 0

Published


Do You Find Yourself Searching for Connection (in Simulink)?
Greg’s pick this week is slQuery by Robert Rasche. Robert has created an impressive mechanism for finding and operating on...

4달 ago

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