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integration files
Mapping toolbox? <http://www.mathworks.com/products/mapping/>

plus de 12 ans il y a | 0

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reversible matrix operation
Your Laplacian matrix is not full rank. Because your system is consistent, you have multiple solutions, and you're just getting ...

plus de 12 ans il y a | 0

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reversible matrix operation
Your code doesn't run for me -- first, I don't have a function |avg| - did you mean to use |mean|? Second, if I replace all ...

plus de 12 ans il y a | 0

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difference between .01 and 0.01 in matlab?
Readability

plus de 12 ans il y a | 2

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if statement for range of array values
To check I've understood correctly, you only want to do something if the current and two preceding |x| values are all less than ...

plus de 12 ans il y a | 0

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Numerical methods with first order equations
ode45

plus de 12 ans il y a | 0

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Matrix fill-in when solving sparse linear systems
Firstly, is there any reason to believe that |x| should be sparse? Just because your matrix |A = C*C'| and your right hand sides...

plus de 12 ans il y a | 0

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Runge-Kutta method related
Why are you bothering to use |ode45| at all? Your solution for any |t >= ti| is just y = y0 + (t - ti) * (g*n-0.5*(u^2+v...

plus de 12 ans il y a | 1

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value of log(1000)
log10(1000)

plus de 12 ans il y a | 0

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Inserting zero rows and columns into matrix efficiently
Perhaps I'm misunderstanding, but your example can be generated from the following M = zeros(numel(pointer_master)); M(p...

plus de 12 ans il y a | 1

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Fixed point (matematice)
|xold| never gets updated, so |xnew| gets set to the same value every iteration, and the loop never ends ...

plus de 12 ans il y a | 0

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ode45
Yes, certainly possible. The basic approach would be to turn it into a system of first order odes of twice the dimension as foll...

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Caught in loop
Your code works fine. If you remove the |disp| statement (which is causing it to slow down heaps), you'll find that it runs comp...

plus de 12 ans il y a | 1

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Triangular surface
Simple example using |DelaunayTri|. First create a set of points N = 1000; theta = 2*pi*rand(N, 1); phi = acos(2*rand...

plus de 12 ans il y a | 0

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[DISCONTINUED] Wish-list for MATLAB Answer sections.
Another thing that would be awesome would be the ability to submit a published m-file as an answer. Often I find myself answ...

plus de 12 ans il y a | 0

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Help with identifiny change in curve shape automatically
What I think you're looking for are effectively the points of high curvature. If you have access to the curve fitting toolbox th...

plus de 12 ans il y a | 1

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Need command help for a specific matrix operation
*EDIT* Needed to strain my eyes harder to figure out that the matrix in question had 4 rows C = [0 1 0 0; 0 0 1 0] * A.^2;

plus de 12 ans il y a | 1

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finding turning points of a dataset
Why don't you look for local maxima of curvature? This way you don't have to define any subjective tolerances. You may need to s...

plus de 12 ans il y a | 1

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signals addition
Assuming they correspond to the same sampling rates, truncate one of them to be of the same length as the smaller one: n1 =...

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ODE45- How to pass parameters out
Why don't you just solve your ODE first, and then call the RHS function, modified to print out your parameters of interest, at t...

plus de 12 ans il y a | 1

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how to efficiently find the indices?
|sort| is your friend: First we sort the entries of |A| so that like entries are adjacent [S, iSorted] = sort(A(:)); ...

plus de 12 ans il y a | 3

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Matlab Help
"Use MATLAB to solve the following...." I've done it, now what do I get? Chocolate fish?

plus de 12 ans il y a | 0

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how to efficiently find the indices?
Depending on whether you want the first or the last occurence [uM, I] = unique(M, 'first') [uM, I] = unique(M)

plus de 12 ans il y a | 0

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Generation of a matrix
To give you some context, 9^275 = 2610298031214360458037978142613933577909126030175802622149530339319603934430500962487448801...

plus de 12 ans il y a | 0

Question

Licensing: Parallel Computing Toolbox labs vs independent MATLAB sessions
From a licensing perspective, what's the difference between running |n| independent MATLAB sessions and running |n| Parallel Com...

plus de 12 ans il y a | 2 réponses | 0

2

réponses

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matrix automation problem
This is one annoying case where the sparse version |spdiags| can do more than the full one |diag| n = 10; m = n-2; c1...

plus de 12 ans il y a | 0

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In an assignment A(I) = B, the number of elements in B and I must be the same - error using ode 45
Hi Peter Your code is actually fine (I just ran it). You must have something nasty hanging around to give that error (as Walt...

plus de 12 ans il y a | 0

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Finding lists of connected triangles in TriRep class
Why don't you want to define an adjacency matrix? If you do, then you could just use the |components| routine in MATLAB-BGL <...

plus de 12 ans il y a | 0

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kl transform
There's a demo in the file exchange <http://www.mathworks.com/matlabcentral/fileexchange/30678-image-compression-demo-usins-k...

plus de 12 ans il y a | 0

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Is deleting threads helpful in this forum?
My opinion is that a question can be deleted until it has been answered. Then it can't. Editors, and only editors, should be abl...

plus de 12 ans il y a | 2