Dot indexing is not supported for variables of this type???

for i = 1: n
    distance(i) = sqrt((sink(1)-site(i, 1)).^2+ (sink(2)-site(i,2)).^2);
    Etx(i) = bit * (b + g * distance(i).^2);
    E(i) = E0 - Etx(i);
    for rr = 2: 10
        count = 1;
        %slope(i) = (centers(2)-site(i,2))/(centers(1)-site(i,1));
        format long;
        E(i).tx(rr) = E(i)-E(i).tx(rr-1);
        if E(i).tr(rr) <= 90/100*E0
            count = count+1
            rr;
        end
        
    end
end

Why is output "Dot indexing is not supported for variables of this type."?

[KSSV]

Which line you are getting error?

E(i).tx(rr) = E(i)-E(i).tx(rr-1); 

What is above line?

[madhan ravi]

How do you expect others to help you without the missing variables?

[Ameer Hamza]

E(i) is a numeric variable, what do you expect the output of E(i).tx(rr-1) to be?

[sagun subedi]

E(i).tx(rr) = E(i)-E(i).tx(rr-1);

This is the line where i get error.

The expected output is also a numeric variable.

[Sindar]

So, let's say E is:

[1 2 3]

How does anything called 'tx' come into play?

Etx is an entirely separate variable. Is it possible you mean something like this?

Etx(i) = E(i)-Etx(i); 

Answer 1

[the cyclist]

Complete guess here. Are you simply trying to multiply the two variables? If so, then

E(i).*tx(rr-1)

Just using a dot, by itself, is a syntax with a different use.