Fig. 2
From: Altering the availability of products within physical micro-environments: a conceptual framework
The space in which Availability can be intervened upon in the context of two subsets of products (lower energy and higher energy foods): Holding the number of lower energy items constant (horizontal lines); holding the number of higher energy items constant (vertical lines); holding the overall number of items available constant (examples shown as dashed rays); holding the ratio of lower energy: higher energy items constant (examples shown as solid rays)