implementation of the gist geographic base file
GIST, New York City's G eographic I nformation S ys t em, is designed to unify many items of basic information describing the physical, social and environmental features of New York City. Files and programs are being developed for use by all agencies of the city government. The principal files are the Geographic Base File and the Building/Lot File. The GIST Geographic Base File (GBF) has been implemented and has been used by more than 20 city departments. This article describes the present contents of the GBF and related files, significant activities in their development and also describes how the files are being used.
geographic base file census data municipal information mapping by computer address matching