You need to check if any p are greater than 0. Those elements < 0 would be not shown since you've set the min y value to 0.
clc;
clear all;
a=[1/2,1/3,1/4];
l=-0.1:.05:.1;
p = @(x,a,l) 1/3.*(exp(x.^(a))-1)./(exp(x.^(a))+1) + l;
x=linspace(0,.2,101);
for k2 = 1:length(l)
figure(k2)
legendCounter = 1;
for k1 = 1:length(a)
pValues = p(x,a(k1),l(k2));
plot(x, pValues)
drawnow;
hold all
if any(pValues >= 0)
ar{legendCounter} = sprintf('a = %s',rats(a(k1),3));
legendCounter = legendCounter + 1;
end
end
grid
axis([0 .21 0 .25])
hold off
legend(ar, 'Location','best')
end
You need to make the colors match for the legend and the plot. It's getting later here so I'll let you do that.
