ode solver store solution

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Ma
Ma 2012-2-24
Hello im using this code calling it from main:
function Heat
[t,T]=ode15s(@dT_dt,[0,timespan],InitialTemp,options);
options = odeset('Jacobian',A);
return
function DT = dT_dt(t,T)
DT = A*T +b ;
return
i cant figure out how to store (t,T) in an array for using it somewhere else. Regards

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回答（1 个）

Jan
Jan 2012-2-24
You can export t and T as output:
function [t, T] = Heat
...
Then your function is called as:
[t, T] = Heat;
But I think there are bugs in your program: The variable A is neither defined inside the function Heat not inside DT. Do you have a function called "A"? Are you sure that you want to call odeset after the integration and not before?
  1 个评论
Ma
Ma 2012-2-24
Thank you so much for this Jan!
-A is defined inside "Heat"
- adding output argument to "Heat just work (Great!!)
- im pretty new to Mlab and the flow of data between functions and Handling get me a bit confused. Like this "pingpong " routine between DT and ode, should i put "heat after Dt ?
once more, thank you
p.s This is an exercise from some Electures

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