MarKf

Actif depuis 2022

https://markwelt.github.io/

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Macroeconomics, Neuroscience, Statistics

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How to check whether partial correlation is significant or not at 5% significance level?
A partial correlation means you are controlling or "partialing out" some variance that is explained by -usually- another (3rd) v...

27 jours il y a | 0

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How To multiply this Formula to run this code Please
The fact that there is the need for a loop for these operations, that b is not simply obtained with b=-T.*h, that [ones(1,i-1), ...

27 jours il y a | 0

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How to plot Confusion Matrix with tolerence limit ?
So you just want to translate the pseudo code above into working code and choose how to best plot it. The pseudo code probably d...

27 jours il y a | 0

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I can't run the code I wrote the way I want. Please help me
By "I cannot change the K value at every T value" I imagine you need K to change for every iteration and therefore have sitll 6 ...

environ 2 mois il y a | 0

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How shall I resolve the warning of Merging of Pdfs?
Nice little utility (and overall apache pdfbox functionality), I just tried it, it worked and it didn't even give me an error (b...

environ 2 mois il y a | 0

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Concatenate two vectors with different dimensions and sort the result in an ascending order.
vertcat(A,B) or cat(1,A,B) or just [A;B] is what you need to concatenate vertically. then just sort Your code however gives the...

environ 2 mois il y a | 1

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How can I get latitude and longitude range for each US state in MATLAB?
With: states = shaperead('usastatelo'); one for example gets 'BoundingBox', 'X', 'Y' among others for each US state states(is...

environ 2 mois il y a | 0

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How do I create a colored intensity plot from location and intensity values
Could imagesc work? sysize = 100; maxintensity = 20; npoints = 13; coords = randi(sysize,[npoints,2]); imatc = nan(sysize); ...

environ 2 mois il y a | 1

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Problem with array and save file?
Do you need a 3D cell and then rehsape it or can you create it like the 2D table you want already? videosn = ["Searching for Bo...

environ 2 mois il y a | 0

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Find x in provided equation!
x^2-2*x+1=0 This polynomial can be expressed by using each term's coefficients, such as [1 -2 1]. Using the polynomial ...

environ 2 mois il y a

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Who invented zero?
We know the importance zero in computer science, mathematics... but who invented zero? Clue: He was the first in the line ...

environ 2 mois il y a

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Change string to number
Change given string to number. (hint: there is already function) Changing from ['1234'] to [1234] is one of example

environ 2 mois il y a

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I would like to find bursts among neuronal spikes.
There are several features that you may want to take into account depending on your data and on what you want to do. The simples...

3 mois il y a | 0

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Why do I see a drop in the last datapoint (Nyquist frequency) of the spectra derived from pwelch?
It may be because it's the Nyquist frequency, rolloff/aliasing/edge artefacts should happen afterwards at higher freqs but in so...

3 mois il y a | 0

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Reconstruction of a Signal from the Real Part of Its Discrete Fourier Transform for matlab
N = 14; %ns = 0:N; xn = 1/2*(randn(N, 1) +1i*randn(N,1)); %random complex signal x_n = [0+0i;xn;zeros([N,1])+0i]; % M or nume...

3 mois il y a | 0

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I am getting the same processed image result from easch iteration of the loop.I want to get the respective processed image from each iteration of the loop.
COuld the problem (just a first glance) be here? myFiles = dir(fullfile(myDir,'*.png')); %gets all png files in struct for k ...

4 mois il y a | 0

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Plotting surface tangent to surface plot
You should use a matrix, not a scalar or vector, as the error says. Z (and T) are vectors, probably an issue with how you defi...

4 mois il y a | 0

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How in the world am I supposed to install MATLAB on Linux Ubuntu 20.04?!
cd mounted/directory/with/matlab ./install But you probably already tried that. Add sudo first before the command maybe. You...

4 mois il y a | 0

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Indexing in complex cell arrays
To simplify, since you are working with cells that contain only single colums or rows (and not multiple like in a matrix), a{1} ...

4 mois il y a | 0

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Extract data points from multiple plot in one figure on Matlab
Your figure axes have 3 graphic objects, the first is the green line and the last is the Observed and Simulation ones. In betwee...

4 mois il y a | 0

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plot running time complexity
Well, in this figure the functions behind the lines are just not the simple ones displayed. Otherwise for example all n^n and n^...

4 mois il y a | 0

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Energy of an object
Calculate the total mechanical energy of an object. Total Energy= Potential energy + Kinetic energy P.E.=m*g*h K.E.=1/2...

4 mois il y a

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Fill a zeros matrix
The aim is to fill an array of all zeros given a numerical value and the index of row and columns for this value. 3 Inputs: ...

4 mois il y a

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Distance of the centroids of the balls
Given *n* balls of radius *r* and the vector *p (nx3)* with all position *(x,y,z)* of the balls, return the symmetric matrix *A ...

4 mois il y a

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Calculate compression ratio of engine
Calculate compression ratio of engine given compression volume of cylinder(Vc), piston stroke(s) and valve diameter(d)

5 mois il y a

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Extract one pixel vertical stripes from multiple images and concatenate them in a new image in Matlab
folder = ''; % pwd or C:\Users\etc or /usr/local/ or fullfile or https// or whatever position = 10; % column of pixels in pixel...

5 mois il y a | 0

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For over three dimensional data
How is my whole Uni requesting help like this? Surely there are some people who could help within already... Anyway, you should...

5 mois il y a | 0

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How can I remove double values in an array
"remove rows in C that has zero in the second column" so pretty much the array B but with the 2nd column values of A whenever th...

5 mois il y a | 0

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All capital?
Are all the letters in the input string capital letters? Examples: 'MNOP' -> 1 'MN0P' -> 0

5 mois il y a

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Find similar sequences
Another problem inspired by a question on the <http://www.mathworks.com/matlabcentral/answers answers> forum. Given a matrix ...

5 mois il y a

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