Getting an error message and don't know how to fix

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Holly Martin
Holly Martin 2019-11-21
评论： Holly Martin 2019-11-21
I have code that looks like this
% The loop
for i=1:N-1
v=diff(z);
v(i+1) = v(i) + h*(((-g-k*(abs(v)).^p)*V)/m);
z(i+1) = z(i)+h*v(i+1);
end
the error message has come up like this in the command window
Error in particle (line 24)
v(i+1) = v(i) + h*(((-g-k*(abs(v)).^p)*V)/m);
No idea what ive done, its probably a really easy fix but im having a blonde moment. New to this stuff. Thanks :)
  2 个评论
Holly Martin
Holly Martin 2019-11-21
Unable to perform assignment because the left and right sides have a different number of elements.
Error in particle (line 24)
v(i+1) = v(i) + h*(((-g-k*(abs(v)).^p)*V)/m);
Sorry- im so stupid sometimes haha

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采纳的回答

the cyclist
the cyclist 2019-11-21
编辑：the cyclist 2019-11-21
abs(v)
is a vector, so the right-hand side is a vector. You are trying to put that into one element of v on the left-hand side.
Maybe you meant
abs(v(i))
there?

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