Community Profile

photo

Sean de Wolski


Last seen: Today

MathWorks

5,663 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.

Contact

Sean de Wolski's Badges

  • Scavenger Finisher
  • Master
  • 36 Month Streak
  • Thankful Level 2
  • Quiz Master
  • Creator
  • Speed Demon
  • Personal Best Downloads Level 1
  • First Review
  • 5-Star Galaxy Level 3
  • First Submission
  • Revival Level 3
  • Knowledgeable Level 4
  • First Answer
  • Promoter

View all

Contributions in
View by

Answered
2019b warnings popping up never had this before with 2019a
I've seen this warning in 19b too! Not sure if there is a change to the PNG library being used or if my image is corrupt/out of...

5 days ago | 0

Answered
checking dataType instead typecast at property or argument validation
There's no way to do this with validators in R2019b and the datatype coercion will always happen. You can use a set.property se...

7 days ago | 0

| accepted

Answered
Problem with accumarray/histcounts
This isn't the easiest to understand algorithm in the world but I think it does exactly what you want. n = size(C,1) ix = ceil...

7 days ago | 0

| accepted

Answered
what's a externally defined MCOS class ?
I'd contact tech support on that one.

8 days ago | 0

Answered
How do I add multiple .PNG files to an existing PowerPoint (.pptx) file using a for loop?
I'd strongly encourage you to look at the MATLAB Report Generator for this which has the ability to easily add or replace conten...

14 days ago | 0

Answered
Integrating MATLAB Maps Broswer in my App Designer Project
Webmaps aren't supported in app designer. Look at using geoplot with the correct base map. Think this will get you what you wa...

14 days ago | 0

| accepted

Answered
Is there a way to get the top k values per row of a MATLAB array?
I'd probably do something like this: x = magic(4) k = 3 [~,idx] = maxk(x,k,2) for ii = 1:size(x,1) x(ii,~ismember(1:siz...

15 days ago | 0

| accepted

Answered
How to count the number of 1 between two 0 in a vector?
[regionprops(bwlabel([0 1 1 1 0 0 1 0 1 1 0 1]),'Area').Area]

15 days ago | 0

Answered
In programmatic report generation how can I display numbers in engineering format inside a table?
Look at the NumericFormat property of the MATLABVariable class https://www.mathworks.com/help/rptgen/ug/mlreportgen.report.matl...

15 days ago | 0

Answered
How to combine all CT files to make a single array/matrix?
Look at dicomreadVolume! https://www.mathworks.com/help/images/ref/dicomreadvolume.html

18 days ago | 0

Answered
Retrain model, Classification Learner
When you export the model, there's an option to generate a function. This function can be used to retrain the model on new data...

26 days ago | 1

| accepted

Answered
drawellipse not working, can't reproduce example
which -all drawellipse Looks like you're shadowing this.

26 days ago | 0

| accepted

Published


digCircs
Sean‘s pick this week is digcircs by Graham W Griffiths.   My pick this week is a really cool visualization of the numbers...

1 month ago

Thumbnail

Answered
How to share and update property value across different objects.
Put a breakpoint on this line: cgmObj.set_interstitial_BG(val); And see what cgmObj is and if it has a set_interstitial_BG(val...

1 month ago | 0

Published


Determining next available file name
Jiro‘s Pick this week is nextname by Stephen Cobeldick.Stephen is no stranger in the MATLAB user community arena. As of...

1 month ago

Thumbnail

Answered
Convert .rpt to .m file?
You can use the rpt file with the new APIs https://www.mathworks.com/help/releases/R2019b/rptgen/ug/mlreportgen.report.rptfile-c...

1 month ago | 0

Answered
Plotting the density of latitude and longitude points as a heat map on geographic data
Look at geodensityplot https://www.mathworks.com/help/releases/R2019b/matlab/ref/geodensityplot.html

1 month ago | 0

Solved


Aquiles y la tortuga
Contaba Zenón en su famosa paradoja que un día Aquiles, el guerrero griego más veloz de la Hélade, se enfrentó a una pequeña tor...

2 months ago

Published


2019 in Review
It’s that time of year again; 2019 is coming to a close as are the two thousand teens.  During the past decade, I started...

2 months ago

Thumbnail

Answered
How to create subplots of findchangepts function?
Take a look at the find change points live task which will generate the code for you for the plot you're looking for. Copy and ...

2 months ago | 1

| accepted

Answered
Directly open custom documentation
web(fullfile(docroot, '3ptoolbox/toolbox_name/doc/Index.html')) You can get this by navigating to your custom doc page's Index,...

2 months ago | 0

Published


App for calculus students (one-variable plotting)
Jiro‘s Pick this week is ez plotter by Martin C.For my work, I spend a lot of my time thinking about how MATLAB can help...

2 months ago

Thumbnail

Answered
How to set the variable formats in a Report Generator table?
In R2019b, the https://www.mathworks.com/help/releases/R2019b/rptgen/ug/mlreportgen.report.matlabvariable-class.html has a Numer...

2 months ago | 0

| accepted

Answered
Using timer, How can I cleanly exit a function execution, when the timer fires in MATLAB?
Why use a timer for this? In the start of your function, start a tic t = tic Then periodically check if toc(t)>2 ...

2 months ago | 0

Published


Minimally Bounded Rectangles, and more!
Brett‘s Pick this week is A suite of minimal bounding objects, by John D’Errico. I also give a shout-out to julien diener,...

2 months ago

Thumbnail

Published


Py_Addpath
Sean‘s pick this week is py_addpath directory matlab_too by Eric Fields. Using Python with MATLAB Do you have some Python...

2 months ago

Thumbnail

Answered
Unable to save 1024 x 1280 cell array of cfit objects.
If I were you, I'd just store a,b,c,and d, as matrices directly then when necessary construct the cfit object on the fly with th...

3 months ago | 0

| accepted

Answered
How can I switch programatically that my model uses base workspace instead of data dicitonary?
I think you just set "DataDictionary" to {''}. https://www.mathworks.com/help/releases/R2019b/simulink/slref/model-parameters....

3 months ago | 0

| accepted

Answered
How to detect start points and end points of plateaus in graph plotted from a data set?
Maybe look at ischange or the change point detection live task in 19b? https://www.mathworks.com/help/matlab/ref/findchangepo...

3 months ago | 0

Answered
how to make a heatmap for a monthly time serie?
Convert your x values to datetime. Then heatmap will just work: dt = datetime('now'):hours(1):datetime('tomorrow'); v = rand(...

3 months ago | 1

Load more