Answered

i want to fill zeros inbetween vector elements

Looks like you should turn to matlab's sparse arrays. Something like this should be a shortest-ish code-snippet to do what you n...

i want to fill zeros inbetween vector elements

Looks like you should turn to matlab's sparse arrays. Something like this should be a shortest-ish code-snippet to do what you n...

2 months ago | 0

Answered

Coherence as a function of time

Have a look at mscohere, and its help and documentation. It should allow you to calculate the coherence. My version resides in t...

Coherence as a function of time

Have a look at mscohere, and its help and documentation. It should allow you to calculate the coherence. My version resides in t...

2 months ago | 0

Answered

Using spectralFlux to plot Flux of a vector

It is not at all clear what you want to do, spectral flux is not a term I've heard before - this might be because I'm ignorant, ...

Using spectralFlux to plot Flux of a vector

It is not at all clear what you want to do, spectral flux is not a term I've heard before - this might be because I'm ignorant, ...

2 months ago | 0

Answered

matrix contain index track

Sure: I = [1, 3, 1, 4; 2, 3, 2, 4]; % Then operate away... But it is very unclear if that is what you really want. Do...

matrix contain index track

Sure: I = [1, 3, 1, 4; 2, 3, 2, 4]; % Then operate away... But it is very unclear if that is what you really want. Do...

2 months ago | 0

Answered

Problems with waitbar sizing

Have a look at this command-line progress-bar version. It is less visually intrusive when working with other stuff while matlab ...

Problems with waitbar sizing

Have a look at this command-line progress-bar version. It is less visually intrusive when working with other stuff while matlab ...

2 months ago | 0

Answered

Histogram with circular bars

I would do something like this: edges = 0:15:360; N_all(1,:) = histcounts(M1,edges);% Put one histogram per row into N_all N_...

Histogram with circular bars

I would do something like this: edges = 0:15:360; N_all(1,:) = histcounts(M1,edges);% Put one histogram per row into N_all N_...

2 months ago | 0

Answered

Unusual arrangement of plot

Seems like you want the plot done with the radii sorted? (plot plots what you feed it, if you have the x-variable unsorted the p...

Unusual arrangement of plot

Seems like you want the plot done with the radii sorted? (plot plots what you feed it, if you have the x-variable unsorted the p...

2 months ago | 1

Answered

How to find the square root fo complex square

What's wrong with: sqrtZ = sqrt(Z); ? Then possibly work out the other root if necessary. HTH

How to find the square root fo complex square

What's wrong with: sqrtZ = sqrt(Z); ? Then possibly work out the other root if necessary. HTH

2 months ago | 0

Answered

Problem implementing finite difference method at edges of periodic functions

What I'd usualy have to do in this situation is to extract the differentiation matrices - just to check that all elements become...

Problem implementing finite difference method at edges of periodic functions

What I'd usualy have to do in this situation is to extract the differentiation matrices - just to check that all elements become...

2 months ago | 0

Answered

What starting point to choose so fsolve always returns a solution when any exists?

This depends on how you have parameterized your surface. For the most general case (curve - circle), where you have a curve para...

What starting point to choose so fsolve always returns a solution when any exists?

This depends on how you have parameterized your surface. For the most general case (curve - circle), where you have a curve para...

2 months ago | 1

Answered

How does MATLAB deal with wanted linear dependencies?

That's not the problem. What you should look at is how "wellconditioned" your model-matrix X is. Look at this example: [x,y] = ...

How does MATLAB deal with wanted linear dependencies?

That's not the problem. What you should look at is how "wellconditioned" your model-matrix X is. Look at this example: [x,y] = ...

2 months ago | 0

Answered

create freehand region of interest

Have a look at ginput (there are a couple of improved/modified versions on the file exchange), that function should give you the...

create freehand region of interest

Have a look at ginput (there are a couple of improved/modified versions on the file exchange), that function should give you the...

2 months ago | 0

Answered

What is the best way to animate a rocket trajectory through matlab?

I would look for some of the arrow-contributions on the file exchange: Arrow3, arrow - and then simply loop over time calculate ...

What is the best way to animate a rocket trajectory through matlab?

I would look for some of the arrow-contributions on the file exchange: Arrow3, arrow - and then simply loop over time calculate ...

2 months ago | 1

Answered

How to make a common color bar?

This is how I do this neatly: subplot(1,1,1) cbh = colorbar_labeled(''); subplot(2,2,3) plot([0 2]) subplot(2,2,2) imagesc...

How to make a common color bar?

This is how I do this neatly: subplot(1,1,1) cbh = colorbar_labeled(''); subplot(2,2,3) plot([0 2]) subplot(2,2,2) imagesc...

2 months ago | 0

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Answered

Subscript indices must either be real positive integers or logicals. how can i change? thanks!

Matlab uses 1-based indexing to vectors, so your line: i(0) = v0; %initial condition Has to be changed to: i(1) = v0; %initia...

Subscript indices must either be real positive integers or logicals. how can i change? thanks!

Matlab uses 1-based indexing to vectors, so your line: i(0) = v0; %initial condition Has to be changed to: i(1) = v0; %initia...

2 months ago | 0

Answered

finding all local minima of histogram

If you read the help of the hist function you'll find: N = HIST(Y) bins the elements of Y into 10 equally spaced containers...

finding all local minima of histogram

If you read the help of the hist function you'll find: N = HIST(Y) bins the elements of Y into 10 equally spaced containers...

2 months ago | 0

Answered

Cut a matrix after a certain value

Try: rowNum = find(any(Acum1 > 2500,2),1,'first'); % 1440*60= 86400 secondi. รจ il tempo disponibile nella giornata if isempty(...

Cut a matrix after a certain value

Try: rowNum = find(any(Acum1 > 2500,2),1,'first'); % 1440*60= 86400 secondi. รจ il tempo disponibile nella giornata if isempty(...

3 months ago | 0

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Answered

scatteredInterpolant giving unexpected plateaus

When I tried to download the mat-file I get nothing when I try to load it, it seems empty, could you check that the one you actu...

scatteredInterpolant giving unexpected plateaus

When I tried to download the mat-file I get nothing when I try to load it, it seems empty, could you check that the one you actu...

3 months ago | 0

Answered

Visualization of 4D Plot

Perhaps you're asking for something like this: [X,Y,Z] = cylinder(linspace(1,1.5,100),100); % You have to specify your cylinder...

Visualization of 4D Plot

Perhaps you're asking for something like this: [X,Y,Z] = cylinder(linspace(1,1.5,100),100); % You have to specify your cylinder...

3 months ago | 0

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Answered

Linear least squares overdetermined system

If I understand your problem correct you want to solve a reasonably large number of very small linear systems? In that case you...

Linear least squares overdetermined system

If I understand your problem correct you want to solve a reasonably large number of very small linear systems? In that case you...

3 months ago | 0

Answered

[solved] difference between 2 spectrograms

Spectrogram called without input arguments seems to plot log10 of the power. try this: im = pcolor(h/1000,(t/60),log10(abs((s')...

[solved] difference between 2 spectrograms

Spectrogram called without input arguments seems to plot log10 of the power. try this: im = pcolor(h/1000,(t/60),log10(abs((s')...

3 months ago | 1

Answered

ODE45 Solution for a coupled equation

When running your function I get an initial growth of T, which is due to the k_ISC*n(1) term in your ode - that would represent ...

ODE45 Solution for a coupled equation

When running your function I get an initial growth of T, which is due to the k_ISC*n(1) term in your ode - that would represent ...

3 months ago | 0

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Answered

How can I create a subplot of ode45 for a mass spring damper where the two plots have a different k value?

Simply add another parameter to your msdfunc for k: function zprime= msdfunc(t,z,k) m = 4; b = 0.25; if nargin < 2 || isempty...

How can I create a subplot of ode45 for a mass spring damper where the two plots have a different k value?

Simply add another parameter to your msdfunc for k: function zprime= msdfunc(t,z,k) m = 4; b = 0.25; if nargin < 2 || isempty...

3 months ago | 1

| accepted

Answered

Solving nonlinear diferential equations system

That's a system of coupled first-order ODEs. Have a look at the help and documentation for ode45, ode23. HTH

Solving nonlinear diferential equations system

That's a system of coupled first-order ODEs. Have a look at the help and documentation for ode45, ode23. HTH

3 months ago | 1

Answered

How to generate Publication quality( for conferences/Journals) figures in MATLAB?

In the File menu go to print preview - from there you can set a number of different behaviours of matlab's print. Then print you...

How to generate Publication quality( for conferences/Journals) figures in MATLAB?

In the File menu go to print preview - from there you can set a number of different behaviours of matlab's print. Then print you...

3 months ago | 1

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Answered

How to perform convolution with a dataset?

In matlab this should be as simple as f = A*(C*exp(alpha*t + D*exp(beta*t))); % or whatever you have for that part. G = psf; ...

How to perform convolution with a dataset?

In matlab this should be as simple as f = A*(C*exp(alpha*t + D*exp(beta*t))); % or whatever you have for that part. G = psf; ...

3 months ago | 0

Answered

Plot a scalar as a function of a parameter

It should be as simple as: for n = 1:N for t = 2:T pipiVal(1,n) = pipiC(t,n); % or however you get the phipi-values cor...

Plot a scalar as a function of a parameter

It should be as simple as: for n = 1:N for t = 2:T pipiVal(1,n) = pipiC(t,n); % or however you get the phipi-values cor...

3 months ago | 0

Answered

How do I create a colormap for a flat plane?

Use something like this: surf(x,y,z-1,x+0.5*y),shading flat You can use whichever linear combination of x and y to have your g...

How do I create a colormap for a flat plane?

Use something like this: surf(x,y,z-1,x+0.5*y),shading flat You can use whichever linear combination of x and y to have your g...

3 months ago | 0

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Answered

PLOT THE GRAPH OF VECTOR FUNCTIONS

So you want to plot a vector-function , where gives you 3-element vectors at points in 3-D space. For that you might get what...

PLOT THE GRAPH OF VECTOR FUNCTIONS

So you want to plot a vector-function , where gives you 3-element vectors at points in 3-D space. For that you might get what...

3 months ago | 1

Answered

How do I plot interpolated grid data and original datapoint set in the same plot?

You can always simply plot all your points: plot3(Xi,Yi,Zi,'r.') Or with scatter: scatter(Xi,Yi,32,Zi,'filled') But to me th...

How do I plot interpolated grid data and original datapoint set in the same plot?

You can always simply plot all your points: plot3(Xi,Yi,Zi,'r.') Or with scatter: scatter(Xi,Yi,32,Zi,'filled') But to me th...

3 months ago | 0

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