Extracting non zero values from structure variable

Suppose S is a structre variable with following zero and non-zero values , Then How do we extract only non-zero values from structure variable S.

s=100;
for i=1:s
    if (sensorCover(i))
        S(i).E=0.5;
        S(i).xd=xf(i)
        S(i).yd=yf(i)
        S(i).ir=ircount(i)
        S(i).cr=cf(i)
        
    else 
        S(i).E=0;
        S(i).xd=0;
        S(i).yd=0;
        S(i).ir=0;
        S(i).cr=0;
    end
    
end

[KSSV]

Question is not clear......what is sensorCover here?

[chandra Naik]

SensorCover(i)---Please assume it as any test condition. Thank you

Answer 1

[Sulaymon Eshkabilov]

Use logical indexing to take out non-zero values from a sturcture array, e.g.:

S.m(1) =0.1;  S.m(2:5)=0; S.m(6:9)=pi; S.k(1:3)=0; S.k(4:5)=-1;
S.m(S.m~=0)                % Non-zero values

ans = 1×5

0.1000 3.1416 3.1416 3.1416 3.1416

S.k(S.k~=0)                % Non-zero values

ans = 1×2

-1 -1

[chandra Naik]

Thank you

[Sulaymon Eshkabilov]

Most welcome!

[Stephen23]

It is simpler to use NONZEROS:

S.m(1)   = 0.1;
S.m(2:5) = 0;
S.m(6:9) = pi;
S.k(1:3) = 0;
S.k(4:5) = -1;
nonzeros(S.m)

ans = 5×1

0.1000 3.1416 3.1416 3.1416 3.1416

nonzeros(S.k)

ans = 2×1

-1 -1

Note that the original question showed a non-scalar structure with fields of scalar numerics, whereas the answer given above shows a scalar structure with fields of numeric vectors. These are clearly not the same thing.