MATLAB: How to join markers in a semilogy plot generated from a for loop

linesplot

I searched for the existing questions and answers on the community, but it doesn't seem to work and I only get the markers plotted but they are not joined by a line.
I am using Matlab R2019b on Mac OS Catalina.
Below is the code. Everything is working except that the markers are not joined by the line.
clear all    % clear all variables
close all    % close all figures
clc
xr = pi;      % initial right boundary
xl = 0;        % initial left boundary
fprintf('j \t xc \t fc \n')
for j = 1:1000      % j is the number of iterations on the interval
    xc = (xl+xr)/2;     % calculate the midpoint
    fc = exp(xc) - tan(xc);     % calculate function (e^x - tan(x))
    
    if fc>0
        xl = xc;
    else
        xr = xc;
    end
    
    if abs(fc) < 10^(-12)
        break
    end
    
    if j>1
        semilogy(j,abs(fc),'b*--')
        hold on
        drawnow
    end
    
    fprintf('%d \t %.4f \t %e \n',j,xc,fc)
     
end
fprintf('-----------\n')
fprintf('The value of root is: %.4f \n',xc)      % print value of root
fprintf('The error of the iterative procedure after %d iterations is: %e \n',j,fc)      % print value of function

Best Answer

clf
xr = pi;      % initial right boundary
xl = 0;        % initial left boundary
fprintf('j \t xc \t fc \n')
semilogy(nan, nan);
ax = gca;
h = animatedline(ax, 'Marker','*');
for j = 1:1000      % j is the number of iterations on the interval
    xc = (xl+xr)/2;     % calculate the midpoint
    fc = exp(xc) - tan(xc);     % calculate function (e^x - tan(x))
    
    if fc>0
        xl = xc;
    else
        xr = xc;
    end
    
    if abs(fc) < 10^(-12)
        break
    end
    
    if j>1
        addpoints(h,j,abs(fc));
        drawnow
    end
    
    fprintf('%d \t %.4f \t %e \n',j,xc,fc)
     
end
fprintf('-----------\n')
fprintf('The value of root is: %.4f \n',xc)      % print value of root
fprintf('The error of the iterative procedure after %d iterations is: %e \n',j,fc)      % print value of function
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