Desired array as output; concatenation of 3 N X 1 variables into one N X 3 variable using loop.

i have three variables with values as bellow

S = 100 X 1 double

T = 100 X 1 double

Ri = 100 X 1 double

i want make an output varaiable with these three variables as a 100 X 3

mpoints = [];
for i= 1:100
    if i < 101
    mpoints = [S(i) T(i) depth(i)];
    i = i+1;
    end
end

I have tried the above code the loop should itterate 100 times but instead, it outputs only 1 X 3 intead of 100 X 3. Please suggest me where i did wrong.

Answer 1

[David Fletcher]

You are overwriting mpoints on every iteration, so you will end up with only the last set of values. Try:

mpoints = [];
for i= 1:100
    mpoints(i,:) = [S(i) T(i) depth(i)];
end

You don't need to increment i every iteration - the loop handles it. The if statement is also largely pointless in this context at least.

You could of course just write mpoints=[S T depth] to achieve the same thing

[Subhash Chandra Ranga]

Thank you so much new to matlab :).