Changing properties of several lines in a plot containing hundreds of lines

I plot a bunch of lines (~200) using the plot function. Most lines correspond to the trajectories that converge to zero. These twist within a narrow strip.

However, there are 5-10 lines that have different behavior. I do not know apriory [a priori (dpb)] which I'm interested in and identify them by looking at their values at the final time.

Assume that I wish to plot these lines thick or add the legend containing only the items corresponding to these lines. How can I do that?

[T,X]=odexx(...)  % here X = [N,M], M>200
plot(T,X)         % this plots a bunch of lines
F=X(end,:)        % values of the states X at the final time
ind= find(F>0.01) % these are the indices of lines I wish to work with

How can I change the characteristics of the lines with numbers from ind?

Answer 1

[dpb]

Save the line handles when you plot...

[T,X]=odexx(...)
hL=plot(T,X);   
ix=find(X(end,:)>0.01);
set(hL(ix),'LineWidth',2)
legend(hL(ix),num2str(ix(:),'Line #%d'))

[Dmitry Gromov]

Many thanks!