Is there a way to traverse points in the Dense Cloud?

[jsloat]

Hi,
    I was hoping to write a python function that could automatically assist in find outlying dense cloud points to automatically select and delete or disable them (points that have no neighbors within a certain distance).  I have successfully written functions that operate on the sparse cloud points, and although I can easily get handle on the dense cloud structure for one of my chunks,  I've not found any methods to traverse the points that make up the dense cloud and operate on them.  I see how to export them to a separate file, but that takes a long time and doesn't solve my issue.  Is there an iterating function or method to access Dense Cloud points as a list?

Thanks,
-Jay-