How can we store the each single calculation in the "For" loop into the separate array?

Hello everyone,

I need to store the length calculation in separate array. However, I do not know why matlab only records the last value, and every thing else is zero.. I would like to store the value of each calculation in the separate vector.

Below is my code.

%Start FOR loop
for k = 1:3:N
    %Set up the start codon
    if StartPt == 0
        if dna(k) == A && dna(k+1) == T && dna(k+2) == G
            StartPt = k;
        end
    else
        if dna(k) == T && dna(k+1) == A && dna(k+2) == A
            StopPt= k;
        elseif dna(k) == T && dna(k+1) == A && dna(k+2) == G
            StopPt = k;
        elseif dna(k) == T && dna(k+1) == G && dna(k+2) == A
            StopPt = k;
            %Length calculation 
            Length = StopPt - StartPt + 3;%Need to store the length

Thank you,

Answer 1

[Walter Roberson]

Instead of assigning to Length, assign to Length((k-1)/3+1)

Storing the every result in a separate vector is recommended against. Use a multidimensional array or cell array instead.

http://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval