For loop data extraction

I am having trouble finding a way to extract data at then end of a for loop with function.
for i = 1:length(height)
% solve coupled drag ODE
options = odeset('RelTol',1e-5,'AbsTol',1e-7); % ODE options
f = @(t,x) horizEqns(Isp,Wo,Wb,Wdot,msl,1,height(i),t,x); % the equations that will be solved
[t,soln] = ode45(f,[0 maxtime],[0. v0],options);
end

Answers (1)

Jon
Jon on 12 Nov 2020
You overwrite your t and soln values with each loop iteration. If you want to save those to use them later you need to put them into arrays. Assuming t and soln have the same length each time
[t(:,i),soln(:,i)] = ode45(f,[0 maxtime],[0. v0],options);

3 Comments

I initially tried that but get this as the error:
Unable to perform assignment because the indices on the left side are not compatible
with the size of the right side.
Probably because soln has more than one column.
Try this
[t,soln(:,:,i)] = ode45(f,[0 maxtime],[0. v0],options);
or this
[t,soln{i}] = ode45(f,[0 maxtime],[0. v0],options);
Thank you! That second one works. If you add it as an answer outside the comment, I will accept it as the working!

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R2020a

Asked:

on 12 Nov 2020

Commented:

on 12 Nov 2020

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