add new field to structure in matlab

To add a new field to a structure in MATLAB, you can use the dot notation to assign a value to a new field. Here's an example:

main.m
% Define a structure with two fields
myStruct.field1 = 'value1';
myStruct.field2 = 'value2';

% Add a new field to the structure
myStruct.field3 = 'value3';
157 chars
7 lines

In this example, we first define a structure myStruct with two fields, field1 and field2. To add a new field to the structure, we simply use the dot notation to assign a value to the new field field3.

Alternatively, you can use the setfield function to add a new field to a structure:

main.m
% Define a structure with two fields
myStruct.field1 = 'value1';
myStruct.field2 = 'value2';

% Add a new field to the structure using setfield
myStruct = setfield(myStruct, 'field3', 'value3');
195 chars
7 lines

In this example, we first define a structure myStruct with two fields, field1 and field2. We then use the setfield function to add a new field field3 with the value 'value3'. Note that setfield returns the updated structure, so we assign it back to myStruct.

Either way, you can now access the new field field3 using the dot notation:

main.m
% Access the new field
disp(myStruct.field3) % displays 'value3'
65 chars
3 lines