how can I join points along a two plots with straight lines?

hello. I have written this code to draw a slope model for me. First, there is the linear slip surface and then the circular slip surface. both functions have thesame vectorizations. Now I want to connect the points of both plots with straight lines. Can anyone help me out??? thank you"

            H   = 5;
            Xc  =7;
            Yc  = 11; 
            R   = 20;     
            fr   = 45;              % slope angle in degrees
            tfr  = tand(fr);         % slope angle in gradient
            %%Slip surface generation
            xmin = Xc - sqrt(abs(R^2 - Yc^2));             % Exit point of slip circle
            xmax = Xc + sqrt(abs(R^2 - (Yc-H)^2));         % Entry point of slip circle
            x    = linspace(xmin,xmax,ns)';                 % Positions where the forces will be analyzed.
            ybot = Yc - sqrt(abs(R^2-(x-Xc).^2));           % Equation for generating slip circle
            %%Slope surface generation
            ytop = (x>=0).*(x<(H/tfr)).*(x*tfr) + (x>=(H/tfr)).*H; % Slope surface. equation of a line is used
            figure(1);
            plot(x,ybot,'-r',x,ytop,'-r')

Answer 1

[Jan Orwat]

add at the end something like that:

hold on
plot(reshape([x,x,x].',1,[]),reshape([ytop,ybot,ytop*NaN].',1,[]))

[Jan Orwat]

In general, you can combine vectors (say A and B) in manner like

 [A(1) B(1) NaN A(2) B(2) NaN ...]

but not manually, via concatenation and reshaping.

Note, that without including NaNs you will get saw-like shape.

[Brendan Atarigiya]

Thank you very much Jan, you are a life saver.