guide.m

%% Just press f5 to run everything, and read the section that has something you need

% Press (ctrl+enter) to run the section your cursor is currently in ( Marked in yellow)
clear all
close all
%% Init
%Just some example-arrays
X1 = [1:100]; 
Y1 = sin(X1./10); 

% The samples have different length
X2 = [1:0.5:100];
Y2= 1.-(1./X2);

disp("Init complete");


%% Basic plot 




%   All code you write betweeen hold on and hold off 
%   will apply to the same plot
hold on  

% (Optional) Add a title 
title("Basic plot"); 


plot(X1, Y1); % Plot the function
hold off

%% Legends and labels

figure; % Calling figure => Plot/write in a new window
hold on
title("Set Legends and labels with the commands they display");

plot( X1, Y1);

% Set desctiptions on the axis
xlabel("xlabel('text')");
ylabel("ylabel('text')");

% Legend must come after you call plot()
% GIves a name to the plotted lines
%   
legend(["legend('text')"]); 
hold off



%% Ploting values against each other

figure
hold on 
title("Ploting values against each other");
%Methon 1:
    %Give the inputs in pairs
    % X1 and X2 can have different lengths as long as the length is the
    % same for between X1 and Y1 (and so on)
plot(X1, Y1, X2, Y2);
legend(["It is fine to have more plots that legends"]);
% Or more legends than plots (But it causes a warning)
hold off




% %Method 2:
%     % Give the X-values first and then a list of all Y-values 
%     %(Separate with ; )
        % plot( X1, [Y1; sin(X1) ] ); 





%% SUBPLOTS

figure;
hold on
title("Subplots");


% Subplot(n, m, i)
    %   Divides the window into a grid of n * m plots
    %   i is the position of the plot (left to right, top to bottom)  

    
subplot(2, 1, 1);
plot(X1, Y1);

% They work just like normal between hold on and hold off
subplot(2,1, 2); 
hold on
plot(X2, Y2, X2, -Y2);
legend("Subplot 2");
xlabel("X"); 
ylabel("Y"); 

legend(["Multiple subplots", "Title is not working"]);
hold off
hold off



%% Colours and styles
figure
hold on 
title("Colours and styles");
plot(X1, Y1, "r", X2, Y2, "b--", X1, Y1.*(-1) , "pk");
% Add a string after X and Y to change colour and style
% The first letter is colour
    % The colours are:
        % blue      b
        % black     k	
        % red       r	
        % green     g	
        % yellow	y	
        % cyan      c	
        % magenta	m	
        % white     w
    
% The next letters are for style:
    % Line-types
        % '-'       Whole line(Default)
        % '--'      Dasked line
        % ':'       Dotted line
        % '-.'      Dasshed and dotted line
    % Marking data-points (Just some of them)
        % 'o'   circle
        % 'x'   cross
        % '*'   asterisk
        % 'p'   star (pentagram)

 
    
 

legend(["Add a string after X1 and Y1 to give colour or style", "string = b--","Read comments for more"]);


hold off;


%% Automatically Save Plot
figure;

    

hold on 
title("Automatically Save Plot");

plot(X1, Y1); 
legend("A curve...");
xlabel("X");
ylabel("Y");
hold off 

% TO save the current plot use:
    % print( filename, "-d"+ filename )
    % Use epsc instad of eps to get colours
print("Plot_filename", "-depsc");
print("Plot_filename", "-djpeg"); 

% string(10) makes the number 10 into "10" (Might be usefull for making filenames)
disp("Saved Plot as .jpeg and .eps "); 


%% Change Window-size
% The parameters can be given when:
    % making the figure(), or with the
    % set()-function

f = figure('color' , 'cyan'); 

% The variable gcf returns the current figure
set(gcf, 'color', 'green'); 



% Units sets how position is calculated
    % 'pixels'      :   (Default) 
    % 'normalized'  :   Positions on the window is represented with a
                        % number from 0 to 1            
    %'centimeters'  :   
    %'characters'   :   Character-width= width of character 'x' in the
                        % default size

                        
Units = 'normalized';  % Normalized is probably easiest to use  
set(gcf, 'Units', Units); 
    
% Position 0, 0 is in the bottom left corner
% Position = [    Position of left border ,
%                 Position of bottom border, 
%                 width, 
%                 height   ]; 
Position = [0,0, 1, 1]; %  ==>  Full screen if 'units' = 'normalized'
set(gcf, 'Position', Position);



hold on 
title("Change Window-size");  

plot(X1, Y1); 
legend("bg- colour set to green"); 

hold off



%% Misc. 
% Just so the windows are propperly placed, without cluttering the code

%Get handle of all open windows
figHandles = get(groot, 'Children');


winSize = 0.5
for i = size(figHandles, 1):-1:2
    x0 = 0.5-winSize/2;
    y0 = 0.5-winSize/2;
    Position = [x0,y0 winSize, winSize]
    
    set(figHandles(i), 'units', 'normalized');
    set(figHandles(i), 'Position', Position);
end;
   
uistack(figHandles(1), 'bottom'); % Put fullscreen-window behind all others