I have an array `Xvals`

, of type `Array{Array{Float64,1},1}`

which corresponds to a time series for a system in dimension `d`

. I’d like to quickly look at the different components, from a longitudinal point of view; in other wrods, I want to plot (n, x_i(n)) for n=1,\ldots, and i\in\{1,2,\ldots,d\}. A “cheap” way to do this is to just create a new array:

```
X1=[X[1] for X in Xvals]
```

which can then be examined, but I was wondering if there were some more clever way to handle this, without creating new data structures.