Hello all please help me to plot this function

number=0;

m=4

for t=1:50

x(i,1)=rand(1,1)<=0.5

if symsum(x(i,1),i,t-m+1,t)=m&&x(t-1)=0

x(t,1)= 1

else

symsum(x(i,1),i,t-m+1,t)=0&&x(t-1)=1

x(t,1)= 0

end

end

figure,stem(1:50,x)

xlabel('t')

ylabel('x(t)')

[David Hill]

You need to define the past. When t=1 your are looking back to x(-2),x(-1),and x(0). These initial values need to be defined.

[Ted Erdenekhuyag]

Sir, x(t) is bernoulli random variable

Answer 1

[VBBV]

The conditions seem wierd, considering random number series .as inputs

m=4

m = 4

syms i;
% t = 50;

for t=2:50
    x(t)=randi([0 4],1);
   
    if double(symsum(x,i,t-m+1,t))== m & x(t-1)==0
         x(t)= 1;
    elseif  double(symsum(x,i,t-m+1,t))==0 & x(t-1)==1
         x(t)= 0;
    end
     
end 
figure,stem(1:50,x)
xlabel('t')
ylabel('x(t)')

[Ted Erdenekhuyag]

Brother the result should be like this when i apply m=4 consecutive samples where x(t)=1 total number of this less than m should be eliminated plus x(t) only take two values 0(alarm deactivated) or 1 (alarm activated) how can i do this on matlab.

[Ted Erdenekhuyag]

i want to eliminate those whose total consecutive 1's are less than 4