I want only one value stored in this code

I want to store a particular value in this loop, how can i do it please. the code is below

for t=1:1:30    

    s(t)=sum(v(t))+sum(v(1:t));  
    g(t)=v(t) - min(v(1:t));    
    if s(t) > 4
        disp(t)         %%%%%%%%line of interest
     disp(v(t))             % if cumulative sum is greater than 4,note and display time of change
    end

end

in the code above, the line (line of interest) displays the outcome of every iteration but i need it to only display the value of time t and the corresponding value of vector v when the threshold (4) is exceeded.

[Aquatris]

Does S(t) go above multiple times? if so do you only want the first time it goes above? Share your whole code, with S and v variables, so we can have better understanding.

[Folakemi Omotoye]

i want it to display only at times that the value is above the threshold. that is the whole code. {v= 1x30 matrix} and {t=1:1:30}

[Walter Roberson]

If that is your code, then the explanation would have to be that s(t) is greater than 4 for each of those iterations.

Did you want to know only the first time it happens? Do you want to stop calculating s when it happens, or do you want to continue calculating s but only display those values the first time it happens?

[Folakemi Omotoye]

to continue calculating s but display each time it exceeds 4

Answer 1

[Dennis]

Does v actually contain negative values? Else every value in s will be greater 4 after it exceeds this threshold for the first time. Code below displays the first value of t and v(t) when this happens (needs adjustment if you want to change the increment of the loop).

for t=1:1:30    
    s(t)=sum(v(1:t));  
    g(t)=v(t) - min(v(1:t));    
end
idx=find(s>4,1)
disp(v(idx));

[Folakemi Omotoye]

what is the significance of the 1 in your line of code {idx=find(s>4,1)}

how can i have it to be within the loop such that each time it exceeds the threshold in all iterations, it will always display or store the value at that point and record the time as well.

[Dennis]

The 1 is the number of values greater 4 to be shown. From my understanding the loop will always exceed 4 after this point (unless there are negative values). If you omit the 1 you will get all values greater 4, however these will almost be the same as in the code you have shown.

[Folakemi Omotoye]

understood.thanks for the code

[Dennis]

You are welcome