Hi I need help with for loop

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Benedict Comerford
Benedict Comerford 2020-8-12
评论： Benedict Comerford 2020-8-12
Hi I'm very new to matlab and was wondering if there was a way to code all of this within just one for loop

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KSSV
KSSV 2020-8-12
编辑：KSSV 2020-8-12
This single loop is fine enough:
N = length(v_x) ;
xpos = zeros(N-1,1) ;
xpos(1) = 4 ;
for i = 2:N-1
xpos(i) = v_x(i)*(t(i)-t(i-1))+xpos(i-1) ;
endfor
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KSSV
KSSV 2020-8-12
There is a typo error....edited the answer. There was one extra paranthesis '('
Benedict Comerford
Benedict Comerford 2020-8-12
Thank you so much that was a great help

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Akira Agata
Akira Agata 2020-8-12
No need to use for-loop. How about the following way?
% Read data file
T1 = readtable('A1_input.txt');
% Postion of (x,y) at time = 0
x0 = 4;
y0 = 0;
% Calculate the position for each time step
xPos = cumtrapz(T1.time, T1.vx) + x0;
yPos = cumtrapz(T1.time, T1.vx) + y0;
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Benedict Comerford
Benedict Comerford 2020-8-12
HI Akira
Thanks for that Sadly one of the requirements for my code is that it must be a for loop.

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