% This m-file is an introduction to more advanced data structures
clear % clear all variables and start fresh
%% Multidimensional matrices
A = rand(2,4,3,3) % A [2x4x3x3] matrix
%% A single structure called WinterTerm with three fields
WinterTerm.course = 'Math 2T03';
WinterTerm.prof   = 'Kevlahan';
WinterTerm.marks  = [80 75 95 2 73 62 93];
WinterTerm
pause
whos WinterTerm
pause
% Now add more records
WinterTerm(2).course = 'Math 2C03' ; WinterTerm(3).course = 'Math 2S03';
WinterTerm(2).prof   = 'Wolkowicz' ; WinterTerm(3).prof   = 'Boden';
WinterTerm(2).marks  = [23 40 15]; WinterTerm(3).marks  = [95 90 85 83 75];
whos WinterTerm
pause
WinterTerm(2).marks(3) % 3rd mark from 2nd course
WinterTerm(3).marks    % All marks 
%% Creating a structure array using the struct function
clear WinterTerm
WinterTerm = [struct('course','Math 2T03','prof','Kevlahan','marks', [80 75 95 2 73 62 93]);
    struct('course','Math 2C03','prof','Wolkowicz','marks',[23 40 15]);
    struct('course','Math 2S03','prof','Boden','marks',[95 90 85 83 75])];
WinterTerm.marks
%% A Cell is an array of data containers
 % It is the most versatile data object it can even contain structures!
 C = cell(2,2) % Create a 2x2 cell
 C{1,1} = rand(3) % Put a 3x3 random matrix in 1st box
 C{1,2} = char('john','raj'); % a string array in 2nd box
 C{2,1} = WinterTerm; % put a structure in the 3rd box
 C{2,2} = cell(3,3); % put a 3x3 cell in the 4th box
 % Create cell directly
 clear C
 C = {rand(3), char('john','raj'); WinterTerm cell(3,3)};
 C % Gives types of contents the containers of C have
 C{1,2} % Use content indexing to access entire contents of container at location {i,j}
 pause
 C(1,2) % Use index notation to access a container, but not its contents
 pause
 C{1,2}(1,:) % Use multiple index notation to access a particular data in a particular container
 pause
 C{2,1}(3).prof % Combine structure notation with cell indices
 C{2,1}(3).marks(3:5)
 pause
 celldisp(C)
 pause
 cellplot(C)