Science mapping projects have been revived by the advent of virtual reality software capable of navigating large synthetic
three dimensional spaces. Unlike the earlier mapping efforts aimed at creating simple maps at either a global or local level,
the focus is now on creating large scale maps displaying many thousands of documents which can be input into the new VR systems.
This paper presents a general framework for creating large scale document spaces as well as some new methods which perform
some of the individual processing steps. The methods are designed primarily for citation data but could be applied to other
types of data, including hypertext links.