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data=dlmread('US_energy_by_sector.csv',',',2,0);
h=figure();
plot(data(:,1),data(:,3),data(:,1),data(:,9));
%plotting residential energy consumption and transportational energy
%consumption from 1949 to 2016 in trillions of BTUs
set(0, 'defaultAxesFontSize', 16)
set(0,'defaultTextFontSize',14)
set(0,'defaultLineLineWidth',3)
set(gcf, 'Position', [200, 200, 1000, 800])
xlabel('Time (years)')
ylabel('Total Energy Consumed (trillions of BTUs)')
legend('Residential','Transportation','Location','northwest')
title('US Energy Consumption from 1949 to 2016')
saveas(h,'figure_01.png')
rescum=cumsum(data(:,3))./1000000;%cumulative sum of residential energy
%consumption in quintillions of BTUs
transcum=cumsum(data(:,9))./1000000;%cumulative sum of transportational
%energy consumption in quintillions of BTUs
h=figure();
plot(data(:,1),rescum,data(:,1),transcum)
set(gcf, 'Position', [500, 200, 1000, 800])
xlabel('Time (years)')
ylabel('Total Energy Consumed (quintillions of BTUs)')
legend('Residential','Transportation','Location','northwest')
title('Cumulative US Energy Consumption from 1949 to 2016')
saveas(h,'figure_02.png')
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