Joining points of a plot

Hi,

I am plotting a graph shown in the images using the following code. Kindly let me know how I should change it to join these points using straight lines. Also how can I give a particular label to that line? Ultimately I would be having multiple parallel lines like this with different labels. Thanks.

h1=figure; figure(h1); hold on;

for n=1:length(zeta_dom_r) if abs(zeta_dom_r(n)-0.700)<0.0001

        plot(tau_invp(n), T_delayp(n), 'r.')

        xlabel('\tau (s)');
        ylabel('T Delay (s)');
        xlim([0 5]);
        ylim([0 0.5]);

    end

end

Answer 1

[Kirby Fears]

Just add a dash to the line specification to connect the dots.

Instead of

 plot(tau_invp(n), T_delayp(n), 'r.')

Add a dash as shown below

 plot(tau_invp(n), T_delayp(n), 'r.-')

After plotting, use the legend function to add a legend to your graph. Just input names for each line in the order in which they were plotted and they will appear in the legend.

 plot(1:10, rand(1,10), 'r.-')
 legend('myline')