MATLAB: Automaticly generate plots and different legend

Question

Hi,

let k is variable. For example, if k=3, then I will have speed1 speed2 speed3.

How can I automaticly generate one plot with all speeds and also different legend for each one?

Thanks

ps:t=0:0.01:100

Answer 1

t=0:0.01:100
speed1=cos(0.01*t);
speed2=sin(0.05*t);
speed3=cos(0.1*t);
y=[speed1;speed2;speed3];
plot(t',y');
for k=1:size(y,1)
  leg{k}=sprintf('speed%d',k);
end
legend(leg);