combine two structures in matlab

In MATLAB, we can combine two structures using various functions or operators. Here are some of the ways:

1. Using the struct function: we can create a new structure by combining two or more structures using the struct function.

main.m
s1 = struct('field1', 1, 'field2', 'a');
s2 = struct('field1', 2, 'field2', 'b', 'field3', [1, 2, 3]);

s_combined = struct('s1', s1, 's2', s2);
145 chars
5 lines

In this example, we create two structures s1 and s2, and then combine them into a new structure s_combined.

2. Using the {} operator: if we have multiple structures with the same fields, we can combine them into a cell array using the {} operator.

main.m
s1 = struct('field1', 1, 'field2', 'a');
s2 = struct('field1', 2, 'field2', 'b');

s_cell = {s1, s2};
102 chars
5 lines

In this example, we create two structures s1 and s2, and then combine them into a cell array s_cell.

3. Using the cat function: if we have structures with arrays as fields, we can concatenate them using the cat function.

main.m
s1 = struct('field1', [1, 2, 3], 'field2', 5);
s2 = struct('field1', [4, 5, 6], 'field2', 10);

s_combined = cat(2, s1, s2);
125 chars
5 lines

In this example, we create two structures s1 and s2, and then concatenate them horizontally using the cat function.

We should choose the method that is best suited for our specific use case.