saving a structure in mat file

i have a few structures i want to save in mat file. eg

s(1).a = 'hello'; s(1).b = 99; s(2).a = 'bye'; s(3).b = 82;

i want to save structure s(1) and s(2) into a mat file. i did this, save('test_struct.mat',marker(1)); but it give me error, Argument must contain a string.

[Jan]

What is "marker(1)"?

[genesis]

sorry it was save('test_struct.mat',s(1));

[Jan]

@genesis: And now you have seen David's answer, which explains, that you need the string 's' instead of the variable s(1). If this solves your problem, please accept his answer.

Answer 1

[David Sanchez]

When using save, the name of the variable to be saved has to be a string:

s.name='ww';
s.age=22;
save('test.mat','s')

For structs, try the following, copied from matlab documentation:

Save the fields of structure s1 as individual variables. Check the contents of the file with the whos function. Clear the workspace and load the contents of a single field.

s1.a = 12.7;
s1.b = {'abc', [4 5; 6 7]};
s1.c = 'Hello!';

save('newstruct.mat', '-struct', 's1');

disp('Contents of newstruct.mat:')
whos('-file', 'newstruct.mat')

clear('s1')
load('newstruct.mat', 'b')

[Matthew Creek]

Here are some links to related documentation:

save Function Reference Page

Example from save Function Reference Page