How to create a vector with for loop?

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Hamzah Faraj
Hamzah Faraj le 14 Mai 2020
Modifié(e) : Hamzah Faraj le 14 Mai 2020
Hello,
I am trying to devide the values between a vector elements by 0.1. Assume x = [1,4,-1,5,0,-2]. I want to create a vector with that:
If x(k) > x(k-1) : increment by 0.1 ----> x(k-1) : 0.1 : x(k)
if x(k) < x(k-1) : decrement by 0.1 ----> x(k-1) : -0.1 : x(k)
In my attempt, it only shows the results between last two elements (0 and -2), but I need the values for the elements.
Any help is appreciated. Thanks!
x = [1,4,-1,5,0,2];
for k=2:length(x)
if x(k) > x(k-1)
vt = v(k-1):0.1:v(k);
else
vt = x(k-1):-0.1:x(k);
end
end

Réponse acceptée

Geoff Hayes
Geoff Hayes le 14 Mai 2020
Hamzah - on each subsequent iteration of your loop, you are overwriting the data from the previous iteration since you are setting vt to something new. You need to concatenate the new data with the previous data so that you don't lose anything. Try the following:
x = [1,4,-1,5,0,2];
vt = [];
for k=2:length(x)
if x(k) > x(k-1)
vt = [vt x(k-1):0.1:x(k)];
else
vt = [vt x(k-1):-0.1:x(k)];
end
end
  1 commentaire
Hamzah Faraj
Hamzah Faraj le 14 Mai 2020
Modifié(e) : Hamzah Faraj le 14 Mai 2020
Thank you Geoff Hayes. It does return the required results.

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