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How can I return the values of a loop
You are computing k once for each value of i and overwriting it. If I understand what you want, try: i = 1:5; j = 0:5; k...
plus de 9 ans il y a | 0
| A accepté
Question
Create an array of n function handle
Hello, How can I create a set of ode equations? Example: fun1 = @(t,x,k) x-k; I want to generate a function of n e...
plus de 9 ans il y a | 1 réponse | 0
1
réponseQuestion
Struggling at 'Events' of ODE45
Hello, I have a ODE and need to compute the "exact" time and values of y at y(2)=0 and I'm using ode45 and 'Events'. When ...
presque 10 ans il y a | 1 réponse | 0
1
réponseQuestion
Struggling at events of ode function
Hello, I'm trying to use events function to find the coordinates of a ODE function of n variables. What I want is to find the...
environ 10 ans il y a | 1 réponse | 0
0
réponseCan You Explain This Weird Behavior
I'm not an expert, but try to never use known MATLAB functions. To check if a name is already used, go to command whindow and ty...
environ 10 ans il y a | 1
Question
How to automatically choose to compute for or parfor loops
Hi, I wonder if there's a way to specify if I want to compute with a normal for or with a parfor. What I don't want is to...
environ 10 ans il y a | 1 réponse | 3
1
réponseQuestion
How to vectorize this simple for-loop
Hello, I'm trying to vectorize something like this: z=zeros(3); x=[1 2 3]; y=x; for i=1:length(x) %or y, d...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
How to group data in cells?
Hello, My code works on a data file. By loading the file, I have a 5xn matrix (n is approximately BIG). Each column represent...
environ 10 ans il y a | 1 réponse | 0
0
réponseQuestion
Problem scattering high amount of data
Hello, I'm trying to scatter more than 80Mb of data in one scatter figure and I see nothing but blue. I'm trying to get small...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
Which plot do I need?
Hello, I'm trying to plot in 2D some points and I want to color them depending on a logic (1 or 0) classification. I'll ex...
environ 10 ans il y a | 3 réponses | 0
3
réponsesQuestion
How to automatically stop a function execution if it's not running right?
Hi, I have a problem with running my code. I'm numerically solving a Poincaré map of a dynamical system several times with di...
environ 10 ans il y a | 1 réponse | 0
0
réponseQuestion
How can I get a derivated function df/dt?
Hello, I'm trying to calculate derivate functions like z(t)=cos(x(t))+y(t)^2 and I expect answers like z'(t)=-x'(t)*sin(x(t))...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
Struggling with ode45 MATLAB function
Hello everybody, I'm trying to introduce my function into ode45 to solve it but it messages me "Not enough input arguments". ...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
How to speed up my while loops
Hello, I have been looking for ways to speed up my code because sometimes I spend some hours at running once MATLAB. I've rea...
environ 10 ans il y a | 1 réponse | 0
1
réponseQuestion
How can I speed up importing large .d files?
Hi, soon I'll have large files, about 50000x6 (more than one of them) and I'll have to work on them several times to plot di...
environ 10 ans il y a | 2 réponses | 0
2
réponsesWhy do I get different outputs at different run's?
Thanks to everybody for your comments. I see global variables are a mess. I finally solved the problem this way: fun goes from ...
plus de 10 ans il y a | 0
| A accepté
Question
Why do I get different outputs at different run's?
Hi, there's something very odd happening with my code. I'm doing three times the same calculations for three different input va...
plus de 10 ans il y a | 1 réponse | 0
1
réponseQuestion
Am I overwriting data?
Hi, I need to get three different orbits and I think I might be overwriting data because when I plot them together I just get...
plus de 10 ans il y a | 1 réponse | 0
1
réponseQuestion
How to plot different length vectors
Hi, I need to plot different orbits in one figure. The coordinate vectors are result of a Runge-Kutta 7-8 so I can't kno...
plus de 10 ans il y a | 1 réponse | 0
