How to save vectors with different lengths

Here is the problem: A crack has Weibull distribution and each month it increase by deltaL in length. I have to plot 100 different lines with different quantity of elements in vector because it is random. I can only save one vector at a time. But I want to save all 100 vectors with different lengths into 1 matrix and use that matrix to plot 100 lines.

This is my code:

beta = 1.5; 
alpha = 1;
l = 0;
k = 1;
    while l < 100
        k = k+1;
        t= 1:k;
        deltaL(k) = wblrnd(alpha,beta);
        if k == 1
            l(k) = deltaL(k);
        else 
            l(k) = l(k-1) + deltaL(k);
        end
    end
plot(t,l);

[Guillaume]

Which is the variable that you consider to be one of the 100 vectors?

Also, do you know how while behaves if you pass it a logical vector (as will be the case after the first step)? Or is it accidental that your while code works?

[Robert Lummert]

"if k == 1" is never true as you initialise k to 1 and increment it before that check, so k will be 2 in first loop.

Then assign "t= 1:k" on every loop even though you only use it after looping is finished.

Furthermore your while-condition is l<100, but you make l a vector with l(k) = ..., while conditions should yield scalars. Sth like "for k = 1:100" might be more suitable here for looping, anyway.

[Chinh Le Trung]

The variable l is the one I consider as one of 100 vectors. As far as I know, if logical vector is true then the loop continues, if wrong it breaks the loop. Tks for your help!

[Chinh Le Trung]

Oh yes, I'm totally wrong about "if k == 1" and "t= 1:k". But k is not a constant value, because the variable "deltaL" follows Weibull distribution and k is the number of times when the variable "l" reaches 100 meters in length. Tks for your help!

[Guillaume]

"As far as I know,f logical vector is true then the loop continues"

When is a logical vector true? Is the logical vector [true, false, true] true? What about the logical vector [false, true, false]?

Remember that when l is a vector, e.g. [1 2 3 4 5], l<100 will return a logical vector, in this case [true, true, true, true, true].

Answer 1

[Catalytic]

One way is to use cell arrays

C={1,[2,3],[4,5,6,7]}