Plotting data set in for loop

Stephanie Velasco

2016 11 12

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I have bee trying to plot two data set according to their efficiency. If efficiency is greater than .8 the set should be plotted in red or if it less that .8 the data set should be plotted in blue. I am having trouble related the effeminacy with the appropriate data set to plot it. how would i do this, with out hard coding the date set. Efficiency is 'n'

D=[1 2 3 4;2 5 7 5;2 6 7 9;2 4 8 4];
n1= (D(2,:)/D(1,:));
n2 = D(4,:)/D(3,:);
V =[n1 n2];
%plot
figure('color','white');
axis([0 12 0 10]);
xlabel('Energy Input (E1) [MJ]');
ylabel('Kinectic Energy (E0) [MJ]');
title('Efficiency Analysis of Spacecraft Engines','FontSize',20);
grid
for x = min(V):max(V)
    if x> 0.80
       hold on 
    elseif x< 0.8
        hold on
    end
end

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Stephanie Velasco 2016-11-13

编辑：Walter Roberson 2016-11-13

在 MATLAB Online 中打开

I have the plot before actually going in to the loop,i just didn't show it but its.

%plot
figure('color','white');
axis([0 12 0 10]);
xlabel('Energy Input (E1) [MJ]');
ylabel('Kinectic Energy (E0) [MJ]');
title('Efficiency Analysis of Spacecraft Engines','FontSize',20);
grid