PlotIntro

%% Making Super nice plots in MATLAB -- Script written by: Chris Esparza
%
% Last Modified: 9-14-2018

%{
% This script is just a small introduction into the fundamentals of
% plotting using MATLAB. There are a lot more tips and tricks, but these
% are the ones I find myself using A LOT. If you have anymore questions,
% be sure to email me at: jce18b@my.fsu.edu. Or you can always visit
% MathWorks' website where they have examples for all of their MATLAB
% commands:
%
% https://www.mathworks.com/help/matlab/creating_plots/types-of-matlab-plots.html
%
% You can also search using the bar at the top left if you're stuck.
%
%}

% "clc" clears the command window, "clear all" clears all variables, and 
% "close all" closes all the figures/windows.
clc, clear all, close all

% These three lines set the default interpreter to LaTeX. This means the
% titles, axis labels, and axis tick marks will have the CMU Serif font, as
% well as follow normal LaTeX syntax when making symbols.

set(0,'defaultTextInterpreter','latex'); 
set(groot, 'defaultAxesTickLabelInterpreter','latex'); 
set(groot, 'defaultLegendInterpreter','latex');

% In the email I attached some data I gathered during an assignment from
% last spring. Download that into the same folder as this script, and then 
% this command will load the data. 
load('session09_data.mat');


%% Plotting

% the "figure()" command tells MATLAB that this is an independent figure in
% which you'll plot something
figure(1)

% "plot" plots what you input. It follows:
%
% plot( xdata, ydata, color/type of marker, other commands);
% 
% The "marker" and "other commands" are not necessary, however they help
% make the plot more legible. For example, I used 'linewidth' to make the
% lines of the graph heavier (thicker) so they're easier to read. 
plot( t, x_t, 'o', t, v_t, 'o', 'linewidth',2);

% turns on grid in background
grid on

% The next three lines are labels for the plot you just made. Notice since
% we set the default interpreter as LaTeX, I used the syntax for making
% font bold as it appears in LaTeX. If you do not include the "set" 
% commands at the beginning, you simply type the word in single quotes and
% it will run.
title('\textbf{Position vs. Time}');
xlabel('\textbf{t}');
ylabel('\textbf{x(t), v(t)}');

% this makes a legend so you can distinguish your data lines
legend('x(t)','v(t)');

%% Font Sizes

% Here I took the same plot and just messed with the font sizes to show you
% how to do it.

% Make a new figure!!
figure(2)
plot( t, x_t, 'o', 'linewidth',2);
title('\textbf{Position vs. Time}','fontsize',32);
xlabel('\textbf{t}','fontsize',10);
ylabel('\textbf{x(t)}','fontsize',22);

%% Errorbars
%
% I will use the same data as before, but now I'll use the command
% "errorbar" instead of plot.

% I make a vector of the same number to use as my error for this example.
err = 0.05*ones(549,1);

% now we plot using "errorbar". make a new figure!!
figure(3)

% you'll have to zoom in to see the bars themselves, but they're there!
errorbar(t, x_t, err, '*');
title('\textbf{Position vs. Time}');
xlabel('\textbf{t}');
ylabel('\textbf{x(t)}');