Save each vector iteration into a matrix

4 visualizzazioni (ultimi 30 giorni)
I have 2 vectors, a and b and the sum of both is v.The time t ranges from 0 to 20 and i would like to save each iteration of v (a vector) into a matrix (where there are 21 vectors thus 3x21). Currently this code goes through each iteration however overwrites all of them and only shows the last value of t. Im am also unsure where the 'if' command is suitable in this circumstance.
for t=1:20;
a = [t,cos(t),0]';
b = [0,0,sin(t)]';
v = a + b;
end

Risposta accettata

Cory Johnson
Cory Johnson il 1 Nov 2016
There are lots of ways to organize data in MATLAB. Below I have shown 3 ways to do this. I think you're looking for the last method.
%%Cell Array
for t=0:20;
a{t+1} = [t,cos(t),0]';
b{t+1} = [0,0,sin(t)]';
v{t+1} = a{t+1} + b{t+1};
end
%%Structure array
for t=0:20;
vec(t+1).a = [t,cos(t),0]';
vec(t+1).b = [0,0,sin(t)]';
vec(t+1).v = vec(t+1).a + vec(t+1).b;
end
%%Only save v
v = [];
for t=0:20;
a = [t,cos(t),0]';
b = [0,0,sin(t)]';
v = [v, (a + b)];
end
Hope that helps!
  2 Commenti
Abdur Rahim
Abdur Rahim il 1 Nov 2016
It's greats having all those methods because I can use the format for future codes, its helped me a lot thanks.
Abdulramon Adeyiola
Abdulramon Adeyiola il 4 Mar 2022
Thanks for this. Meanwhile, what if the dimension of the two vectors are not the same?

Accedi per commentare.

Più risposte (0)

Categorie

Scopri di più su Multidimensional Arrays in Help Center e File Exchange

Community Treasure Hunt

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

Start Hunting!

Translated by