MAKE Vector by loop and if statement

I need to extrat the min value of the

y(i) but it is can not be stored as vector to find min value

u=length(Datatest.Timehhmm);
for i=1:u
    
    z= Datatest.TotalGORscfstb(i);
    
    if min(z)>200 && (Datatest.PDPpsia(i))<=(Datatest.PIPpsia(i))
        y(i)
        
    end 
    
end

Answer 1

[KSSV]

If you want to store the index:

y = zeros([],1) ; 
u=length(Datatest.Timehhmm);
count = 0 ; 
for i=1:u
    
    z= Datatest.TotalGORscfstb(i);
    
    if min(z)>200 && (Datatest.PDPpsia(i))<=(Datatest.PIPpsia(i))
        count = count+1 ; 
        y(count) = i ;         
    end 
end

If you want to store values:

y = zeros([],1) ; 
u=length(Datatest.Timehhmm);
count = 0 ; 
for i=1:u
    
    z= Datatest.TotalGORscfstb(i);
    
    if min(z)>200 && (Datatest.PDPpsia(i))<=(Datatest.PIPpsia(i))
        count = count+1 ; 
        y(count) = yourvalue; % find the value          
    end 
end