The Analytical Tools Interface for Landscape Assessments (ATtILA) is a computer program (an ArcView software extension) that allows users to calculate many common landscape metrics using a geographic information system (GIS).

Four metric groups are currently included in ATtILA:

• landscape characteristics,
• riparian characteristics,
• human stresses and
• physical characteristics.

ATtILA is written in Avenue, ArcView's programming language, and is designed to accommodate spatial data from a variety of sources.