Community Profile

# the cyclist

### Alden Scientific

Last seen: Today Active since 2011

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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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 -...

ungefär en timme ago | 1

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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)

ungefär 13 timmar ago | 1

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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 ...

ungefär 13 timmar ago | 0

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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...

4 dagar ago | 1

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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 ...

9 dagar ago | 1

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.

9 dagar ago | 0

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

13 dagar ago | 0

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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...

15 dagar ago | 1

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...

15 dagar ago | 0

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...

15 dagar ago | 0

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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...

17 dagar ago | 1

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 ...

17 dagar ago | 0

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...

17 dagar ago | 0

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...

17 dagar ago | 1

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

19 dagar ago | 1

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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...

23 dagar ago | 0

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...

25 dagar ago | 0

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...

25 dagar ago | 0

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

26 dagar ago | 1

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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. ...

ungefär en månad ago | 1

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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...

ungefär en månad ago | 0

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

ungefär en månad ago | 1

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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, ...

ungefär en månad ago | 0

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...

ungefär en månad ago | 0

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How do I set a parameter based on individual values in an existing array? Should I use a for loop or something else?
My best guess here is that L is a vector, and you are expecting the if-else logic to work on the entire vector simultaneously. T...

ungefär en månad ago | 0

whats wrong with this code?
In addition to the issues that @dpb mentioned, you also have simple syntax errors in your code. My best guess as to what you in...

ungefär en månad ago | 0

Run section is not working on 2022a
Take a look at my question and answer here. There was a known bug in R2021b (although not exactly what you describe), but I am ...

ungefär en månad ago | 0

How to plot like this????????
There are examples in the documentation for the plot command that are very similar to this, for example: x = 0:pi/10:2*pi; y1 ...

ungefär en månad ago | 0

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