Save each vector iteration into a matrix
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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
采纳的回答
Cory Johnson
2016-11-1
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 个评论
Abdur Rahim
2016-11-1
Abdulramon Adeyiola
2022-3-4
Thanks for this. Meanwhile, what if the dimension of the two vectors are not the same?
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