Isovist

This article is about the tool for architectural spatial analysis called isovist theory. Isovist is also a brand name for the chemical iotrolan.

A single isovist is the volume of space visible from a given point in space, together with a specification of the location of that point. Isovists are naturally three-dimensional, but they may also be studied in two dimensions: either in horizontal section ("plan") or in other vertical sections through the three-dimensional isovist. Every point in physical space has an isovist associated with it.