For a MATLAB figure, I have something like:
figure; hold on;
line ( [1 2], [3 4] );
line ( [5 6], [7 8] );
plot(x1,y1,'r.');
plot(x2,y2,'b.');
where x1,y1,x2,y2 are all vectors.
How can I add legend
for only the last two plots, not for the two lines?