To my understanding, you have created a structure that contains three fields: “run”, “x”, and “y”. Now, you want to combine the entire structure into one matrix without explicitly using a “for” loop.
To accomplish this task, we can use “repmat” and “arrayfun” functions in MATLAB to replicate and concatenate the scaler value “run”, converting it into a cell array containing row vectors of dimension 3x1. Now that all three fields of the structure have same dimensions, we can concatenate them into one matrix by using “vertcat” function.
Below is the complete MATLAB code that solves the task:
% Define the structure array
st(1).run = 1; st(1).x = (0:2)'; st(1).y = 1 * st(1).x;
st(2).run = 2; st(2).x = (5:7)'; st(2).y = 2 * st(2).x;
st(3).run = 3; st(3).x = (0:2)'; st(3).y = 3 * st(3).x;
% Use arrayfun to replicate the run number and concatenate results
runColumn = arrayfun(@(s) repmat(s.run, length(s.x), 1), st, 'UniformOutput', false);
outputMat = [vertcat(runColumn{:}), vertcat(st.x), vertcat(st.y)];
% Display the result
disp('Output Matrix:');
disp(outputMat);
Please find attached the documentation of functions used for reference:
I anticipate this will solve the problem.
