%% Line Style and Width for Surface Plot
% Plot the parametric surface x = s\sin(t), y = -s\cos(t), z = t with different line styles for different values of t. For -5<t<-2, use a dashed line with green dot markers. For -2<t<2, use a LineWidth of 1 and a green face color. For 2<t<5, turn off the lines by setting EdgeColor to none.

syms s t
fsurf(s*sin(t),-s*cos(t),t,[-5 5 -5 -2],'--.','MarkerEdgeColor','g')
hold on
fsurf(s*sin(t),-s*cos(t),t,[-5 5 -2 2],'LineWidth',1,'FaceColor','g')
fsurf(s*sin(t),-s*cos(t),t,[-5 5 2 5],'EdgeColor','none')

% Copyright 2012 The MathWorks, Inc.