Add values to a Matrix

Hello!

I have the following code:

p=0;
num=0:1:3;
cont=0;
i=0;
b=0;
n=0;
for k=1:num(end)
    cad = [];
    cad = 'scope_%d_1.csv';
    ss = [];
    ss = sprintf(cad,num(k))
    s = csvread(ss, 2, 0);
    [fil,col]=size(s);
    for i=1:fil
        if ((s(i,2))< 0.5)&&(s(i+1,2)-(s(i,2))>2)&& p>0
            cont=cont+1;
            n=s(i, 1);
            display(s(i, 1)-b);
            p=p-1;
        else if ((s(i,2))< 0.5)&&(s(i+1,2)-(s(i,2))>2)&& p==0
                cont=cont+1;
                display(s(i, 1)-n);
                b=s(i, 1);
                p=p+1;
            else if (cont==25)
                    p=0;
                    num=0:1:3;
                    cont=0;
                    i=0;
                    b=0;
                    n=0;
                    break
                end
            end
        end
    end
end

And my intention is to, (in each iteration of any of both IF loops), save in a M matrix all the values that appears in the display (for all the iterations).

It is possible?

Thank you

[Andrew Newell]

Hello, Antonio. When you have loops, it's much easier to understand the logic if you indent them, so I have done that for you. See Improve Code Readability.

Having done that, I still find it hard to understand your code or determine what values you want saving in a matrix. I suspect that, where you are writing else if, you really mean elseif. I also suggest that you look at your code in the MATLAB editor and fix all the problems that have an orange underline.

[Antonio Jayena]

Thank you for your help Im new on Matlab. Yes you are right with the elseif problem.

I want to save all the values of all the iterations in a Matrix 1xn (of the IF's loops) of

(s(i, 1)-b)

and

(s(i, 1)-n)

In each iteration

Answer 1

[Andrew Newell]

If you're trying to collect all the values for the inner loop ( for i=1:fil ), you could try putting

M = [];

above the loop, and replacing

display(s(i, 1)-b);

by

M = [M s(i, 1) - b];

and

display(s(i, 1)-n);

by

M = [M s(i, 1)-n];

It's better if a vector of the correct size is preallocated before the loop starts, but I don't know how large M will be.