how to generate periodic 0 1 signal?

I wrote a code,but it has something wrong. what should be modified? Output value should be binary.

t=0:0.01:10;
t=t(1:1000);
y=square(pi*t);
y=y(1:1000);
n=length(y);
for k=1:n
if y>0
    str=1
else 
    str=0
end
end
out = dec2bin(str)

Answer 1

[Walter Roberson]

In your loop, you should be looking at y(k) rather than y as a whole.

You will need to save the value of "str" in the loop.

Efficiency hint: if X is numeric 0 or numeric 1, then faster than dec2bin(X) is char(X + '0')

[Hank]

Thanks. How to save the value of "str"?

t=0:0.01:10;

t=t(1:1000);

y=square(pi*t);

y=y(1:1000);

n=length(y);

for k=1:n

if y(k)>0

str(k)=1

else

str(k)=0

end

end

figure;

plot(t,str);

[Walter Roberson]

Yes, that looks okay.

You can simplify this by replacing from "n=" downwards with

str = y > 0;

plot(t, str);

Answer 2

[Hank]

Is this correct?

t=0:0.01:10;
t=t(1:1000);
y=square(pi*t);
y=y(1:1000);
n=length(y);
for k=1:n
if y(k)>0
    str(k,:)=1
else 
    str(k,:)=0
end
end
figure;

plot(t,str);