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    %% Modify 3-D Parametric Line After Creation
% Plot the parametric line
% 
% $$\matrix{x = e^{\strut{-|t|/10}} \sin(5|t|) \cr y = e^{-|t|/10} \cos(5|t|) \cr z = t.}$$
% 
% Provide an output to make |fplot| return the plot object.
syms t
xt = exp(-abs(t)/10).*sin(5*abs(t));
yt = exp(-abs(t)/10).*cos(5*abs(t));
zt = t;
fp = fplot3(xt,yt,zt)
%%
% Change the range of parameter values to |[-10 10]| and the line
% color to red by using the |TRange| and |Color| properties of |fp| respectively.
fp.TRange = [-10 10];
fp.Color = 'r';