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carlos g


Last seen: 1 year ago |  Active since 2017

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Multiplication of gigantic matrices
Hi, I am trying to multiply two gigantic matrices: [1585152 90]*[90 1585152]. MATLAB runs out of memory. Is there any wo...

1 year ago | 1 answer | 0

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answer

Question


Plot two set of curves with the same colours on the same figure
I have two sets of curves plotted with a loop: for .... plot(den_avg,(z),'-','LineWidth',2) %Set 1 hold on ...

2 years ago | 1 answer | 0

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Question


Quickest way to join images preserving each colormap in MATLAB
I am a having problem finding a way to join images preserving each colormap. I basically want to read images from a folder, plac...

2 years ago | 1 answer | 0

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answer

Question


Top x axis' labels outside of figure
The label of the top x axis appears outside of the figure, how can this be fixed? Also, for some reason I don't understand, "h...

4 years ago | 2 answers | 0

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answers

Question


Finite differences of a complex function
I have a function (a complex array of values uul(:)) for which I would like to compute its derivative. I simply use central fini...

4 years ago | 1 answer | 0

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Question


Issue with FFT in MATLAB and product of signals
I'm having an issue with FFT in MATLAB. This is what I do: 1) 2 signals (Data1 and Data2) are imported into MATLAB. They are si...

4 years ago | 0 answers | 0

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Question


Boundary value problem in MATLAB, issue with fsolve
I am trying to solve and ODE with boundary conditions at `0` and `end`, ws.mat can be downloaded at https://gofile.io/?c=RYzPsO ...

5 years ago | 0 answers | 0

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Solving compound linear optimization problem
I would like to solve the following compound optimization problem in MATLAB: min (Ax-a), min (Bx-b), min (Cx-c) subject to Dx=...

5 years ago | 2 answers | 0

2

answers

Question


Partial fft of multidimensional array
I have a 3D array of dimension (NX,NY,NZ) which represents a variable in physical space, let's say velocities, taken from a simu...

6 years ago | 0 answers | 0

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Question


Least squares assuming functional form of the solution
I am trying to solve the following least squares problem: $$b(\alpha)=A(\alpha,\beta)x(\beta)$$ However, the solution I ge...

6 years ago | 0 answers | 0

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Question


Improve least squares solution
I have to solve a least squares problem in which y=Ax, where y is a vector whose entries are experimental data, A is my model an...

6 years ago | 0 answers | 0

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Increase MATLAB precision without using vpa or sym
Is there any way to increase MATLAB's precision (E-16) without using vpa or sym? This is, without modifying the existing code?

6 years ago | 1 answer | 0

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Question


Numerical integration of Airy functions
I have a problem when I try to numerically integrate the Airy function at "extreme values". Here's a MWE: clc clear ...

6 years ago | 0 answers | 0

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Retrieving variable declared in batch file, into MATLAB
I am trying to pass a variable defined in a batch file to matlab (I am running a MATLAB job launched from SLURM). How can I do t...

7 years ago | 1 answer | 0

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answer

Question


Array inside a function
I have the following function U2=@(eta) i/alpha2*DV2(eta)-beta2/alpha2*W2VEC; where W2VEC is a vector of N components an...

7 years ago | 0 answers | 0

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Numerical integrals and MATLAB precision
The following code %% clc clear %% M=4.5 lambda_0=0.332; %% betats=0.05; beta...

7 years ago | 0 answers | 0

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Behaviour of Complex Airy function
I want to compute numerically the following integral (I am using MATLAB) <<http://quicklatex.com/cache3/22/ql_95da5f14b4c168b...

7 years ago | 1 answer | 0

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Question


Integral of another integral
I want to integrate h1b_eta and then plot it (m1b_eta). However, h1b_eta depends on other functions that also contain integrals....

7 years ago | 1 answer | 0

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Question


Symbolic integration vs numerical integration
I am trying to plot the Scorer function, which looks like this M=1.2; lambda=0.332; alpha=1; beta=1; omega=0.1;...

7 years ago | 0 answers | 0

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Answered
Double integral using integral2, too many input arguments
Thank you! That is exactly what I want to do. How could I then do?

7 years ago | 0

Question


Double integral using integral2, too many input arguments
This is the code: for Y=0:0.01:N, eta(round(1+Y*100))=((i*alpha*lambda)^(1/3))*Y+eta0; V2(round(1+Y*100))=((i...

7 years ago | 2 answers | 0

2

answers

Question


How to get the integral (function) from a vector?
Dear all, I have a vector than can be plotted and I would like to compute its integral. I don't mean the total area below, bu...

7 years ago | 2 answers | 0

2

answers