@vigsterkr I wanted to create a array of vectors for storing the factors scope. For example

```
MARKOV
3
2 2 3
2
2 0 1
3 0 1 2

4
 4.000 2.400
 1.000 0.000

12
 2.2500 3.2500 3.7500
 0.0000 0.0000 10.0000
 1.8750 4.0000 3.3330
 2.0000 2.0000 3.4000
```

In the previous example: I wanted to create 2 `SGVector<int32_t>` for storing scope of first factor (`[0, 1]` and `[0 1 2]`) and finally store the 2 vectors in a list. I didn't find any data structure available in shogun that can create vector of `SGVectors<int32_t>` (tried out `CDynamicArray`, `SGVector<SGVector<int32_t>>`, `SGNDArray<SGVector<int32_t>>`). So finally I went along with `std::vector`. If you could suggest me any other data structure available in shogun for this.

(**Note**: `SGMatrix` would not suffice the need as the size of factors' scope are variable)