Answered
Getting equation for a interpolated spline using csaps
I'll post this as a separate answer, since I did not use a spline at all to build the model, and so it does not get lost in the ...

3 years ago | 0

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Answered
The MATLAB function to solve implicit equation
Assuming your question is how to solve the equation [m^2 /( 3(a+a0)^2)] * (2 * k1 + 3 * k2) = a0 * (2/v1 + 5/v2) I removed...

3 years ago | 0

Answered
Getting equation for a interpolated spline using csaps
Can you get the spline equation? No. There is no simple equation you can write down. Or, if you could write it down, it would in...

3 years ago | 0

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how to filter the noise of a signal
This is probably a good task for a median filter. load matlab.mat whos plot(F) Fhat = medfilt1(F,100); plot(Fhat) Larger v...

3 years ago | 0

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Finding all the positive Roots of non linear equation and plotting the modes
Of course, this would have been for homework, so there is not really much point to posting this answer. Oh well. I will anyway, ...

3 years ago | 0

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contour for scatter data
Let me give an example of how to use a tricontouring tool for scattered data. x = rand(100,1); y = rand(100,1); zfun = @(x,...

3 years ago | 0

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Unable to use 'fit' function from Curve Fitting Toolbox
Is fit giving you fits? First, check that MATLAB thinks the curvefitting toolbox is installed, and that you have a license for ...

3 years ago | 0

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Generating a distribution of points relative to closed surface (alphshape)
Ok. I''ll offer a couple of solutions. Recognize that nothing will be perfect, since these are ad hoc solutions, and an alpha sh...

3 years ago | 0

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Answered
help me fix the Error
which distance_to_earthcos -all This function is not a MATLAB function. It is not found in any toolbox either. For that matter,...

3 years ago | 0

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Problem with derivative function
What you don't seem to appreciate is that in the eyes of the symbolic toolbox, something like 2^(-1/2) Is a numerical result. So...

3 years ago | 0

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Answered
Planes and vectors in 3d
Are these vectors with a tail at (0,0,0)? If so, then they must cross the plane, as long as the z-component is not zero. Or are ...

3 years ago | 0

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Answered
How to fit multiple gaussian in a curve ?
Easy enough. You NEED good starting values though. Crappy starting values --> crappy results. load dsp.mat plot(f,pxx) grid o...

3 years ago | 0

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replace the values by nearest mean of the matrix
Using my inpaint_nans.... y = randi(10,[7,7]) - 2 y = 0 5 0 8 1 0 2 6 5 7 -1 ...

3 years ago | 0

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Going back to unvisited node through visited node by minimum weight of edge
Why are you not using the existing graph tools to solve graph problems? It is never a good idea to write your own code to solve ...

3 years ago | 0

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Answered
my objective function should return less than 10^-6.
First, suppose your car had a problem. Would you take a picture of your car and send it to your local auto mechanic? Would they ...

3 years ago | 0

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plot a matrix in 3D
DID YOU TRY IT? Why not? So, given some arbitrary complex matrix, how do you compute the magnitude? ABS does that. How you you ...

3 years ago | 0

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Trapezoidal numerical integration of f(y) = ( 1 / x(y) ) dy
You are confusing yourself here. Probably because you have created this variable x that has gotten you confused. But let me give...

3 years ago | 1

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Answered
lsqnonlin providing very poor model fits
You have not posted the data, so it is impossible to test your code. Regardless, there are several common reasons why a solver ...

3 years ago | 0

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What is the purpose of zero function?
Consider these two codes: tic x = []; for i = 1:100000 x = [x,i]; end toc clear x tic x = zeros(1,100000); for i...

3 years ago | 1

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While loop that stops if certain number is inserted
You should read the help for while. What you wrote was not even close to valid MATLAB syntax. Look at the examples found in the ...

3 years ago | 0

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multiplying row vector by a scalar
I think @Kay needs an example. A = ones(4,3) B = 1:3; A(3,:) = A(3,:).*B

3 years ago | 0

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Doubt regarding angles of tan inverse
atan2 has nothing to do with it. At least not based on anything you said. The difference between angles can exceed the range yo...

3 years ago | 0

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Bessel Function Calculation in Matlab
Several common problems in this, regardless of whether you got the factiorial/gamma problem solved. You want to use a series so...

3 years ago | 1

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somebody help me please! I've gone over the irritation of approx_sqrt and the only way I've got each value of the function while using a calculator it was if I used y=2
The site seems to want an answer to your question, and we just answered you in the comments. Oh well. But seriously, your solut...

3 years ago | 0

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How to remove noise (unwanted data)
Finding and removing what I might call singleton outlier's while leaving in place small amounts of noise can be a difficult task...

3 years ago | 2

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Answered
How to check the proportionaly of columns of a complex rectagular matrix?
Checking if two vectors (in your case, just columns of a matrix) are proportional is pretty easy, as well as then computing the ...

3 years ago | 1

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Answered
error with function ode45
You need to tell the ODEsolver FROM where, TO where will it integrate? So will the integration be, perhaps FROM 0 to 0.5? All y...

3 years ago | 0

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save loop data with non integer steps
acvalues = 0.01:0.01:1; detectorsignal=zeros(size(acvalues)); for ind = 1:numel(acvalues) absorbing_coeff = acvalues(in...

3 years ago | 0

Answered
Write a function quadraticSolver that takes one 3-element array input and returns two outputs (root condition and root values). Use an if-elseif-else structure in your code.
The error message apparently tells you your array is composed of uint8 numbers. How do you convert a variable of integer type,...

3 years ago | 1

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Creating an array of partial sums of certain array
For example, consider the vector (I've used syms here, so you can see that it works, and generate the correct terms. Had a been ...

3 years ago | 2