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...

1 month ago | 1

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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

1 month ago | 0

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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...

1 month ago | 0

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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...

1 month ago | 1

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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] = ...

1 month ago | 0

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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...

1 month ago | 0

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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

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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...

2 months ago | 0

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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

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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(...

2 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...

2 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...

2 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...

2 months ago | 0

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[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')...

2 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 ...

2 months ago | 0

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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...

2 months ago | 1

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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

2 months ago | 1

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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...

2 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; ...

2 months ago | 0

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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...

2 months ago | 0

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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...

2 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...

2 months ago | 1

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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...

2 months ago | 0

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How to save figures from foor loop in separate folders
Generate your file-names with fullfile (that way you can have multiple directories in a cell-array, one for each of your wanted ...

2 months ago | 0

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Answered
How to integrate a function u^3/(exp(u)-1) in the range of [0 0.033]??.
if numerical integration is good enough: Val = integral(@(x) x.^3./(exp(x)-1),0,0.033) % for which I get: 1.1831e-05 HTH

2 months ago | 0

Answered
maximum value in scatter plot
Well that sounds like a task for histogram2, or any of the number of 2-D histogram functions available on the file exchange. The...

2 months ago | 0

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Answered
Create coordinates on a convex hull
Perhaps this function is overkill, but to me it seems as if this FEX-contribution should help: xy2sn, I don't know if it is the...

2 months ago | 0

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how to draw a 3d surface of exp(x+iy)
Have a look at the dcolor submission to the file exchange. That should give you a good starting point for doing this. There ar...

2 months ago | 1

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Rotate 3D quiver
Matlab uses right-handed coordinate systems (sensible), with the default convention that z is in the upward vertical direction i...

2 months ago | 0

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