Hi I'm trying to develop a Field Test Application and i've to retrieve information like signal strength of neighboring cells. 

So my question is:

> 
> How can I display a graph with the different neighboring cells on
>  X-axis and the signal strength on Y-axis in real time? An example
>  [here](https://play.google.com/store/apps/details?id=com.farproc.wifi.analyzer&hl=fr).
> 
> 
> 

I've already got 5 or 6 neighboring cells and for each one his signal strength.