Scilab Function
Last update : 5/9/2006

ba_l - Calculate the expected average distance of the BA model

### Calling Sequence

  `dis = ba_l(N)`

### Parameters

- `N` : integer
- `dis` : a real number

### Description

  Calculate the expected average distance of the BA model. N is the total node number of BA model. Note here dis is a parameter to measure the distance of BA models. The actual distance equals C*dis, C is constant here.

### Examples

       dis=ba_l(90);

### See Also

`ws_l` ,

### Authors

  Wubo