# How to input data in SAGE and deal with them

I wish to calculate the width of the certain polytopes, the data for these polytopes can be found here (please click "K3/3d" on the left, and then click "list of all 4319" on the top of new page, for some reason, I could not cite the exact URL).

For example, the first one is

3 4 M:5 4 N:35 4 Pic:19 Cor:0

```
1 0 0 -1
0 1 0 -1
0 0 1 -1
```

However, only the number in the matrix will be used in the calculation. My questions are:

(1) How to input these data in SAGE (I use a windows system, and run Virtualbox for SAGE)?

(2) How to use sage to deal with each matrix?

For each of matrix, I have a program as the follows

```
sage: m = matrix(ZZ, [[1,0,0,-1],
....: [0,1,0,-1],
....: [0,0,1,-1]])
sage: p = LatticePolytope(m)
sage: d = p.distances()
sage: l = p.nfacets()
sage: for i in range(l):
....: max(d.row(i))
```

After input the data, how to let sage use the same program deal with each matrix?

Thank you very much for your help!!!

Maybe also the answers in this (http://ask.sagemath.org/question/1842/how-to-plot-data-from-a-file#2705) related questions are helpful.