Question

I have some code that basically does this:

for i = 1:length(ReliabilityStruct)
    if (FailureFlags(i) == 0) 
        plot(X(i), Y(i), '.b');
    elseif (FailureFlags(i) == 1)
        plot(X(i), Y(i), 'or');
    elseif (FailureFlags(i) == 2)
        plot(X(i), Y(i), 'og');
    elseif (FailureFlags(i) == 3)
        plot(X(i), Y(i), 'ok');
    else
        fprintf('\nUnknown Flag, check Data\n')
        return
    end
end
drawnow;
legend('Recovery', '1', '2', '3');

So my aim is to make a graph that has different symbols for different flags. See below:

As you can see, the Legend doesn’t exactly fit the data. How can you change each of the legend entries to fix this up? Alternatively, is there a better way to approach this?

Answer 1

I think you can use something like this (added bonus is that you avoid loops!):

ind = FailureFlags==0;
plot(X(ind), Y(ind), '.b');

ind = FailureFlags==1;
plot(X(ind), Y(ind), 'or');

ind = FailureFlags==2;
plot(X(ind), Y(ind), 'og');

ind = FailureFlags==3;
plot(X(ind), Y(ind), 'ok');

legend('Recovery', '1', '2', '3');