global variable inside a function

3 views (last 30 days)
Babak
Babak on 25 Aug 2014
Edited: per isakson on 26 Aug 2014
Hello every one, In my program I used a solver (ODE45) and as you know, for this purpose I need to define a function. I have an element in my function that change with respect to time. For having time in my function I defined global time but unfortunately I got array of my time. I need to have exact time that solver is using!!. What should I do?
t=0:0.001:2;
[tout,y]=ode45(@(t,X) sys1(X,B,L,Rr),t,zeros(50,1));
%%my function %%
function xdot=sys1(X,B,L,Rr)
global t;
Va=208*cos(2*pi*60*t);
end
Thanks in advance.

Answers (1)

AJ von Alt
AJ von Alt on 25 Aug 2014
There is no need to use a global. You can pass t in as an argument to your ode function. Example 3 of the ode45 documentation demonstrates this usage.
  1 Comment
Babak
Babak on 26 Aug 2014
Thank you AJ von Alt. :)

Sign in to comment.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!