Create an array of n function handle
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
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 entries like:
funN = @(t,x,k) [ x(1)-k
x(2)-k
...
x(n)-k ];
I want to run the program for different values of n, so I can't create the full function handle bu hand.
Thanks.
0 Kommentare
Antworten (1)
Guillaume
am 12 Mai 2016
Bearbeitet: Guillaume
am 12 Mai 2016
I'm not sure why your anonymous functions take a t input that they don't use. Anyway:
funN = @(~, x, k, N) reshape(x(1:N) - k, [], 1);
and to create a cell array of them:
N = 10; %for example
allfuns = arrayfun(@(n) @(t, x, k) funN(t, x, k, n), 1:N, 'UniformOutput', false);
2 Kommentare
Guillaume
am 13 Mai 2016
I answered the title of your question (how to create an array of n functions handles) but I missed the subquestion (how can I create a set of ODE equations).
As far as I know, you cannot pass an array of function handles to the ODE solvers, you have to give them a single function to solve. Hence, why you're getting the error. The ODE did not expect a cell array.
However, I'm unclear on exactly what you want to solve. To solve for one n value, you'd use only one of the allfuns function:
n = 5; %for example
ode45(allfuns{5}, ...)
%or without bothering with the cell array:
ode45(@(t, x, k) funN(t, x, k, n), ...)
Siehe auch
Kategorien
Mehr zu Creating and Concatenating Matrices finden Sie in Help Center und File Exchange
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!