How can I draw a trajectory like this?

Hello everybody Would you help me draw a trajectory like this using sin and cos functions but not with these stars, I want it with solid and continuous line.I have found this piece of code but i couldn't get a clue. Thanks in advance.

c1=30;
c2=30;
for j=1:3
  for i=1:1:8 %%%2nd for loop for no. of S in the column  
      if(mod(i,2)~=0) %%%for C structure and opposite C structure 
          th = linspace( pi/2, -pi/2, 10);
          for k=1:1:length(th)
              anchormove(1,idx) = r *-cos(th(k)) + c1; 
              anchormove(2,idx) = r *-sin(th(k)) + c2;
              idx=idx+1; 

            end
        else 
           th = linspace( -pi/2, pi/2, 10);
           for k=1:1:length(th)
               anchormove(2,idx) = r * sin(th(k)) + c2;
               anchormove(1,idx) = r * cos(th(k)) + c1;               
               idx=idx+1;
           end

        end 
        c2=c2+60;
    end
    lastmove=anchormove(2,idx-1); 

    for i=anchormove(1,idx-1):10: anchormove(1,idx-1)+(r+60)
        anchormove(1,idx) = i; 
        anchormove(2,idx) = lastmove; 
        idx=idx+1;
    end    
    c2=450;
    c1=c1+90;
    for i=1:1:8 %%%2nd for loop for no. of S in the column  
        if(mod(i,2)~=0) %%%for C structure and opposite C structure 
            th = linspace( pi/2, -pi/2, 10);
            for k=1:1:length(th)
                anchormove(1,idx) = r *cos(th(k)) + c1; 
                anchormove(2,idx) = r *sin(th(k)) + c2;
                idx=idx+1; 
                         Ax=anchormove(1,i);
    Ay=anchormove(2,i);
    plot(Ax,Ay,'r*')

Answer 1

[Image Analyst]

Use 'r-' instead of 'r*'.

[Zeinab Ahmadi93]

Thank you for your reply. But it is still dashed lines, actually i want to draw the background of these stars which is a solid blue line.these red stars are sensor nodes which move and traverse this path I want to implement it. I upload my code and the picture of trajectory in these links. I really appreciate your help.

https://www.dropbox.com/s/uy18bz9le0xrl1x/Scurve.png?dl=0

And this link:

https://www.dropbox.com/s/hraawuqyw5l15rv/scurveee.m?dl=0

[Image Analyst]

Attach your code here. I'm not going out to any third party site when you can attach it here with the paper clip icon. Your code as pasted above doesn't work. There are at least 3 "end" statement missing. I don't know where to put them because the formatting and indenting is all messed up. You can type control-a then control-i to fix indenting before pasting here. Please post code that runs.

[Zeinab Ahmadi93]

Ok Thanks dear Image Analyst for your guidance...I corrected my code and it runs. But I have another question, Would you please help me. I posted it here

https://www.mathworks.com/matlabcentral/answers/347079-how-can-i-set-an-equal-distance-of-5-units-between-the-red-star-points