calculate platform displacement in matlab

main.m
% Define variables
a = acceleration; % input acceleration as a vector
t = time; % input time as a vector

% Calculate displacement using trapezoidal rule
n = length(a); % number of data points
v = zeros(1,n); % preallocate velocity vector
d = zeros(1,n); % preallocate displacement vector

% Integrate acceleration to get velocity
for i=2:n
    v(i) = v(i-1) + ((a(i) + a(i-1))/2)*(t(i) - t(i-1));
end

% Integrate velocity to get displacement
for i=2:n
    d(i) = d(i-1) + ((v(i) + v(i-1))/2)*(t(i) - t(i-1));
end

% Plot displacement
plot(t,d);
xlabel('Time (s)');
ylabel('Displacement (m)');
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