The Digital Shoreline Analysis System (DSAS) is computer software that computes rate-of-change statistics from multiple historic shoreline positions residing in a geographic information system. It is also useful for computing rates of change for just about any other boundary change problem that incorporates a clearly-identified feature position at discrete times.

Features

• Guides the user through the major steps of shoreline change analysis
• Calculates shoreline rate-of-change statistics from multiple shoreline positions to analyze historic shoreline change
• Applies to a variety of data sets that use polylines as representations of a feature’s position at a specific point in time, such as the forward limit of a glacier, river channel boundaries, and land use and land cover maps
• Produces metadata for DSAS-generated transects that comply with Federal Geographic Data Committee guidelines