Index exceeds the number of array elements (7).

clc
close all 
clear all

n=100;
t=linspace(0,7,7*n);
code=[1 0 1 1 0 0 1];



%%Bipolar NRZ

subplot(3,1,1)
y=[];
c=1;
for i=1:length(code)
a = c*( code(i).*ones(1,n) );
if code(i) ==1
    c= -c; %% new c is assigned to c
end
    y=[y a];
end
plot(t,y)
grid

%%unipolar NRZ
subplot(3 ,1 ,2)
x1=[ ];
for i=1:length(t)
    g= code(i).*ones(1,n);
   
   x1=[x1 g];
end
plot(t,x1)
grid


%%unipolar RZ
subplot(3 ,1 ,3)
x2=[];
for i=1:length(t)
    d=( code(i).*ones(1,n/2) );
   z=( code(i).*zeros(1,n/2) );
   x2=[x2 d z]
end
plot(t,x2)

in this code starting from %%unipolar NRZ i keep getting Index exceeds the number of array

elements (7). error and i dont know why and it works fine on first section and plots it

Answer 1

[Torsten]

The last two loops also have to run from 1 to length(code), not from 1 to length(t).

[Ali]

thank you didnt notice this