not getting continuous line when plotting real time data

I am not able to get a continuous line when plotting real time data. I have tried using the notations "--r*" and similar to indicate the use of the line and markers, however MATLAB only respects the marker and color indicated, no lines are shown. I tried using 'comet' but it only shows one marker, my Matlab version is R2013b. Below is a section of the code:

   keepLooping = true;
        while keepLooping

             time(count)=toc;
             count = count +1;
             out = fscanf(s);
             fprintf(s, '%s', datestr(now,'yyyy-mmm-dd HH:MM:SS'))
             out1 = strsplit(out,',');
             s.UserData = count;
             p(count) = str2double(out1(12));          %SHARP
             k(count) = str2double(out1(11));          %Raw
             g(count) = str2double(out1(10));          %Temperature
             h(count) = str2double(out1(9));           %Humidity
             hold on
             plotgraph1 = subplot(2,1,1);
             plot(count,p(count),'--mo');

             % plotting p
             title(['SHARP: Temp = ' num2str(g(count)) 'C, Hum = ' num2str(h(count)) '%']);
             xlabel('Time (s)','FontSize',10);
             ylabel('Concentration (g/m3)','FontSize',10);
             scrollWidth = 10;
             delay = .01;                                           
             hold on
             plotgraph2 = subplot(2,1,2);
             plot(count,k(count),'--r*');

            % plotting k
             title(['SHARP: Temp = ' num2str(g(count)) 'C, Hum = ' num2str(h(count)) '%']);
             xlabel('Time (s)','FontSize',10);
             ylabel('Raw','FontSize',10);
             scrollWidth = 10;
             delay = .01;

             drawnow                                                    
       end

[rantunes]

Hey,

Am I mistaken or for example here "plot(count,k(count),'--r*');" you are indeed plotting marks? By default, the Matlab plots lines so you don't need to add the last argument to the plot function. If you wish, just add 'r' for the color of the line.

Greets