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the cyclist


Alden Scientific

Last seen: Today |  Active since 2011

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Head of Modeling and Statistics at Alden Scientific. Obsessive runner. Professional Interests: Predictive modeling, statistics. (I don't respond to email via author page, but will usually look at a question if you send me a link to it.)

Programming Languages:
Python, R, MATLAB, SQL
Spoken Languages:
English

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Answered
two for loops in parallel
If I understand you correctly, you don't need two for loops, and this will do what you want M=5; x=0; A=[1 4 7 10 13 16 19]; ...

1 jour ago | 0

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Answered
24 Hours for run my for loop
Without seeing your code, it is impossible to know specifically what are possible approaches to speed it up, but two possibiliti...

1 jour ago | 0

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Answered
How can i interpolate 1-D data, whit y especified values?
Unless I'm missing something, it sounds like you just want to interpolate x from y, instead of y from x: x = [1 2 3]; y = [1 4...

5 jours ago | 0

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Answered
Hello everyone, I want to restrict the domain of a vector to return it to a smaller data set. For example, X between 2 and 7
X = [ 1 2 3 4 5 6 7 8 9 10 ]; idxToKeep = (X>=2) & (X<=7); Xkeep = X(idxToKeep) You can also do it all in one...

7 jours ago | 0

Answered
chose the marker with plot3d
It looks like you used a hyphen instead of an underscore. x = 1:5; y = rand(1,5); z = rand(1,5); figure plot3(x,y,z,'blac...

7 jours ago | 0

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Answered
How to improve regression models for a dataset with too many variables?
@NC_, as I expect you realize, your question is not really a MATLAB question, but is a generic machine learning question. You ar...

8 jours ago | 0

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Answered
i trying to 3d plot, but mesh nor plot3 worked
This is what I get from your equation: xv = -5 : 0.01 : 5; yv = -5 : 0.01 : 5; [x,y] = meshgrid(xv,yv); f = 10*x.^2.*y -...

8 jours ago | 1

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Answered
How can I find negative factorial ? (-0.5)!
Use the gamma function: x = -0.5; gamma(x+1) % gamma(x+1) is equal to factorial(x)

9 jours ago | 1

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Answered
Converting Matrix to base b fails
dec2base returns a character array representation that can be multiple characters: dec2base(7,2) % "convert" decimal 7 to base ...

9 jours ago | 0

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Answered
How can I insert a title under a group of subplots?
Personally, I would use the more modern tiledlayout (rather than subplot), but then add your text using an annotation (or just t...

12 jours ago | 1

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Answered
Unable to perform assignment because the size of the left side is 1-by-1
My best guess as to the problem is that in this expression ones(1,k+i)-K(k+i) you don't really intend to add a vector of ones ...

17 jours ago | 1

Answered
Set one common Xaxis for a sublot with rows = 1 and columns = 2
You may find the linkaxes command useful. You can also share properties (e.g. titles, xlabels) in a tiledlayout.

18 jours ago | 0

Answered
what is the equivalent of 'improfile' in octave?
This Octave wiki page suggests that the improfile function is missing from Octave.

21 jours ago | 0

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Answered
How do i delete the spaces that are in the middle of a string array?
Here is one way: str=' 123 456 '; str(str==' ') = [] This method relies on the fact that the white space is a space cha...

23 jours ago | 1

Answered
Curve smoothing / fitting
Do you mean you want a smooth line that goes through all the points? You could fit a spline: % Set seed for reproducibility rn...

23 jours ago | 0

Answered
Want to be able to call python 3.9 from MATLAB 2022a
I am not on a Windows machine, but I am pretty confident you want to download and run the last one you listed, the 64-bit Window...

23 jours ago | 0

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Answered
Count the number of "aggregate" peaks in a vector?
I am absolutely positively NOT an expert in this, but I think what might be helpful here is putting your signal through a low-pa...

25 jours ago | 1

Answered
How to increase the distance between labels on the matrix axes
When you say that making the font size smaller "didn't work", can you be more specific? Do you mean that even with the smallest ...

25 jours ago | 0

Answered
What kind of coding do I need to create a program that will recognize the word I am saying and repeat that same word to me?
Take a look at the documentation on how to Record and Play Audio in MATLAB. FYI, it took me literally a few seconds to google t...

26 jours ago | 0

Answered
please explain this code
I ran your code here. You can see that figure it creates. That's what the code does. It defines some data, does some calculation...

26 jours ago | 1

Answered
Replicating one dimension of a 3d matrix
If M is your array, then output = repmat(M,[10,1,1]);

27 jours ago | 1

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Answered
Matlab does plot datetime data (only hours) on wrong day
The most fundamental fix to your issue is to explicitly use the modern datetime format for your times. Then, downstream function...

environ un mois ago | 0

Answered
How to split a 3 by 3 matrix into rows and save rows separetly in arrays
ra = NewRange(1,:); rb = NewRange(2,:); rc = NewRange(3,:); Be aware that you may not actually need to do this separation, be...

environ un mois ago | 0

Answered
predictorImportance changes between releases
Are the ML model results themselves identical? Off the top of my head, I don't know enough about the algorithm and possible cha...

environ un mois ago | 0

Answered
How to add a line break in categorical array?
Here is one way: X = categorical({sprintf('First Inter-monsoon\\newline (March - April)'), ... sprintf('South...

environ un mois ago | 1

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Answered
using eval with save function
It can be tricky to construct the string needed, from a combination of text and numerics. I would recommend a few things here. ...

environ un mois ago | 1

| accepted

Answered
add value from single element of array
Your example is confusing to me, partly because I think you made some careless math errors. But, the way I could approach this i...

environ un mois ago | 0

Answered
remove the frequent values withou sorting
You can still use unique: x = [3 4 3 5 1 0 4 2]; x = unique(x,"stable")

environ un mois ago | 1

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Answered
Show Statistics in a Special Figure
One approach would be find a plot (or plots) in the MATLAB Plot Gallery that look similar to what you want, download that code, ...

environ un mois ago | 0

Answered
run matlab on cloud platform
Yes, there are cloud platform options for running MATLAB. I suggest taking a look at this documentation to get started. (FYI, t...

environ un mois ago | 0

| accepted

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