Storing values from a loop in an array

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Jamie
Jamie 2025-4-22
评论： Jamie 2025-4-22
Hi everyone!
I'm trying to run a loop that saves every value after every iteration until it reaches 0 at which point the loop ends.
My code is as follows:
for y = [y;]
if y>=0
dV_y = (dt/m)*((0.5*rho*C_D*S)-m*g);
dy = dV_y*dt;
y = y+dy;
end
end
The loop runs 1 time and doesn't save it as an array.
Any help will be greatly appreciated, thanks!

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采纳的回答

Matt J
Matt J 2025-4-22
编辑：Matt J 2025-4-22
N=1e7; %Maximum allowed number of iterations.
ysave=nan(1,N);
for i=1:N
dV_y = (dt/m)*((0.5*rho*C_D*S)-m*g);
dy = dV_y*dt;
y = y+dy;
ysave(i)=y;
if y<0,
break;
elseif i==N
warning 'Stopping threshold was not reached.'
end
end
y=ysave(1:i);

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