MATLAB: Is the plot not working within the for loop

3d plotsfor loopMATLAB

I am trying to plot multiple helices. With the code I am using (below) the helix is plotting how I want it to, however, only one helix is not plotting. Does anyone know why this may be the case?
clc;
clear variables;
close all;
n = input('number of revolutions '); 
r = input('radius of stent ');
a = input('angle with respect to the upwards horizontal in degrees '); 
w = input('number of wires ');
R = input('radius of wire ');
h=(2*n*pi*r)/tand(90-a); %height of stent determined by other inputs
e = (2*pi)/(w/2); %theta (spacing between where each wire starts)
if mod(w,2) ==0 %number of wires is even
else
  fprintf('ERROR:number of wires must be even'); %stops code if wire number is odd
  return
end
if mod(n,1) ==0 %number of revolutions is whole number
else
  fprintf('ERROR:number of revolutions must be whole number'); 
  return
end
for i=1:w/2
  for t = (i-1)*e:2*pi/w:(n*2*pi)+e*(i-1); %t value for CCW helices 
    if mod(t,4*pi/w)==0 
      x{i} = (r-R)*sin(t); 
      y{i} = (r-R)*cos(t);
      z{i} = (h/(n*2*pi))*t(1);
      plot3(x{i},y{i},z{i},'.','MarkerSize',25,'MarkerFaceColor','red','MarkerEdgeColor','red')
      hold on
    else
      x{i} = (r+R)*sin(t); 
      y{i} = (r+R)*cos(t);
      z{i} = (h/(n*2*pi))*t(11);
      plot3(x{i},y{i},z{i},'.','MarkerSize',25,'MarkerFaceColor','black','MarkerEdgeColor','black')
      hold on 
    end
    hold on
  end
  hold on
end

Best Answer

Change
z{i} = (h/(n*2*pi))*t(11);
to
z{i} = (h/(n*2*pi))*t(1);  %or whatever the index should be
and it works with the inputs you specified in the comment section above.
For inputs [2,20,34,12,1]
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