Matlab plotting examples

matlab_plotting_examples.m

clear all; close all;
%% Sample Data
x = [0 1 2 3 4 5 6];
y1 = [0 1 2 3 4 5 6];
y2 = [0 1 4 9 16 25 36];

%% Simple scatter plot
figure(1)
plot(x,y1,'k*',x,y2,'k^')
xlabel('X-axis Title (units)','FontSize',18); ylabel('Y-axis Title (units)','FontSize',18)
legend('Series 1 Label','Series 2 Label','Location','NorthWest')
axis([0 7 0 40])

%% Bar graph
x = [1 2 3];
y1 = [1 2 3 4 5 6];
y2 = [1 4 9 16 25 36];
y3 = [1 1 1 1 1 1];

figure(2)
bar(x,[y1;y2;y3])
xlabel('X-axis Title (units)','FontSize',18); ylabel('Y-axis Title (units)','FontSize',18)
legend('Series 1','Series 2','Series 3','Series 4','Series 5', 'Series 6','Location','NorthWest')
colormap(gray)

%% Error Bars

%Equal Error Bars
x = [0 1 2 3 4 5 6];
y1 = [0 1 4 9 16 25 36];
E1 = [3 3 3 3 3 3 3];

figure(3)
errorbar(x,y1,E1,'k^')
xlabel('X-axis Title (units)','FontSize',18); ylabel('Y-axis Title (units)','FontSize',18)
legend('Series 1 Label','Location','NorthWest')

%Unequal Error Bars
x = [0 1 2 3 4 5 6];
y1 = [0 2 4 6 8 10 12];
L =[1 1 1 1 1 1 1];
U = [2 2 2 2 2 2 2];

figure(4)
errorbar(x,y1,L,U,'k^')
xlabel('X-axis Title (units)','FontSize',18); ylabel('Y-axis Title (units)','FontSize',18)
legend('Series 1 Label','Location','NorthWest')
axis([-1 7 0 15])

%% Simple Linear Regression
y3 = [0 1.5 2.3 3.8 4.2 4.8 6.1];

figure(5)
plot(x,y3,'k.')
xlabel('X-axis Title (units)','FontSize',18); ylabel('Y-axis Title (units)','FontSize',18)
p=polyfit(x,y3,1);
hline=refline(p);
hline.Color='k';
%values of p give m and b values for regression

%% Bar graph with error bars
x = [1 2 3 4 5 6];
y1 = [1 2 3 4 5 6];
e = [0.1 0.08 0.05 0.04 0.11 0.7];
color_gray = [192 192 192]./255;

figure(6)
box on
hold on
bar(x,y1,'FaceColor', color_gray)
errorbar(x,y1,e, '.k')
xlabel('X-axis Title (units)','FontSize',18); ylabel('Y-axis Title (units)','FontSize',18)

%Add names to bars instead of numbers
names = {'A' 'B' 'C' 'D' 'E' 'F'};
set(gca, 'XTick', [1 2 3 4 5 6],'xticklabel', names)