How can i plot this function? y=0.75/(log10(x)*2).^2
How about this? x = linspace(0.01,0.99,100); % Avoid tricky inputs like 1 y = 0.75./(log10(x)*2).^2; plot(x,y)

2 years ago | 0

Why aren't the first and last peaks detected using findpeaks()?
For vec1, the reason is that the peak is also the last data point and so is intentionally exlcuded. The findpeaks documentation...

2 years ago | 1

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sin(2*pi) vs sind(360)
If you ever need to compute sin(x*pi) or cos(x*pi), its better to do sinpi(x) or cospi(x). You never explicitly multily x by a ...

2 years ago | 1

Why in matlab sin(pi) is not zero but sin(pi/2) is 1?
If you ever need to compute sin(x*pi) or cos(x*pi), its better to do sinpi(x) or cospi(x). You never explicitly multily x by a ...

2 years ago | 2

Is there any concept like dictionary or hash tables in matlab like in Python?
As of R2022b, MATLAB has a new dictionary datatype An introduction to dictionaries (associative arrays) in MATLAB » The MATLAB B...

2 years ago | 9

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How to make dictionary in Matlab
In R2022b and later, you can use the new dictionary type for this. Faster than containers.map. A tutorial-like introduction at...

2 years ago | 0

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Dictionaries of Hashtables in MATLAB?
Reviving this thread in 2022 because R2022b contains a new dictionary data type. A tutorial-like introduction at An introductio...

2 years ago | 1

Faster alternative to containers.Map
MATLAB R2022b has a new dictionary datatype that's much faster than containers.map. A tutorial-like introduction at An introduc...

2 years ago | 0

how to remove/kill the figure produced with colormap
If the colormap is the most recent command you've executed, it will be the current figure. As such, you can use delete(gcf) W...

2 years ago | 0

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How do I know how large an array can fit on the GPU?
As you've seen, gpuDevice() gives you information about your GPU. This is what I get for mine >> gpuDevice() ans = CUDA...

2 years ago | 0

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process based parpool: keep the data in the workers
Parfor is great, it auto-parallelises for us and takes care of a lot of things like data transfer to/from workers and so on. At ...

2 years ago | 0

using matlab compiler to read a .mat file at run time
You can tell the compiler to exclude things using an Exclude pragma A demo: I created a .mat file as follows myvar = 1; save(...

2 years ago | 1

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Is MATLAB supported on Apple Silicon Macs?
Blog post on this topic at Exploring the MATLAB beta for Native Apple Silicon » The MATLAB Blog - MATLAB & Simulink (mathworks.c...

2 years ago | 1

Anderson Darling Goodness-of-the-fit test?
The statistics toolbox has an adtest function. It can test against a specific distribution with known parameters, or a more gene...

2 years ago | 1

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Using Parfor for solving ODE via numerical methods (Euler)
As others have said, you cannot parallelise this loop. However, what you can do is parallelise independent runs of this loop. ...

2 years ago | 1

OCR on a screenshot
Hi Paolo Just because I am MathWorks staff doesn't mean anything here because until right now I've never used MATLAB's ocr func...

2 years ago | 2

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i dont get why it says Unrecognized function or variable 'Nbin when i run it
It's because you have this line [count,center]=hist(x,Nbin); Nbin needs to be defined as the number of bins you want in the hi...

2 years ago | 0

I would like to plot two bar charts side by side using separate y-axis for each corresponding plot.
Try tilledlayout. Documented at Create tiled chart layout - MATLAB tiledlayout (mathworks.com) % I want one row of plots with...

2 years ago | 0

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arrayfun doesn't work with rmoutliers
arrayfun operates on every element of the array. So arrayfun(@rmoutliers,A,"UniformOutput",false) is like doing rmoutliers(0...

2 years ago | 0

variables cannot be saved in matlab
This looks like an operating system error. In particular, you are trying to write to a folder where you don't have write permis...

2 years ago | 0

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Values are getting updated every 15 seconds in thingspeak. How do I lower this time?
I guess you are using the free tier of thingspeak which is limited to one update every 15 seconds. For faster updates, you'll n...

3 years ago | 2

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Double Integration error using /
You need to vectorise your equation alpha = 1.0; inte = @(y,x) (cos(x).^2)./(1 + alpha./(cos(x).*sqrt(1 - 1./y.^2))).^2.*(1./...

3 years ago | 1

fsolve gives the same value for different parameters of the nonlinear equation
It seems that chaging the paramet C_TIC from 0 to 2.78 doesn't affect the outpur much. I changed your function slightly so that...

3 years ago | 0

Converting MATLAB code into python code
Hi Aakash To get this running on a HPC system, it would be beneficial to know the details of the HPC system. As I said in my co...

3 years ago | 11

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What is the difference between lu() and decomposition([],'lu')?
The two output form of lu() does use a different algorithm compared to the decomposition object. Also, it is not possible to sa...

3 years ago | 0

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Zero elements in a matrix more higher than ones (MATLAB)
This is almost certainly not the most efficient way of doing it but it seems to work. Will need the statistics and ML toolbox f...

3 years ago | 0

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Different results compared to hand calculation?
I don't know the algorithm you are implementing but I can see some things in your code that look strange to me and can explain w...

3 years ago | 0

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R = rotx(ang), roty(ang), rotz(ang) is not working in my MATLAB.
As Scott mentioned, these are in Phase Array Toolbox. Since you have access to it on MATLAB Online, it must be included in your...

3 years ago | 1

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