In some cases, coverages from other sources also went through this editing process. Eventually, all coincident features and offsets in the zoning data layer will be referenced to the orthophoto, but given the utility of these data in regional and watershed planning we have decided not to wait for that extra processing to be complete before releasing the data. If no abbreviations appear on the map then MassGIS assigned abbreviations to the districts. These codes were developed to facilitate looking at data that is unique to each town across town boundaries. For a more complete listing of sources of features and attributes by town, consult the source table ZN.PSC in the library s database directory.
CODE is the district s abbreviation from the zoning map.
This field is also used to create annotation. There are many ways that towns break down these requirements and some of the more common ones are represented in the tables. Annotation will be updated along with coverage attributes. The OV.PAT classifies overlay districts by type. In order to make each overlay district code unique, a town-id is concatenated onto the beginning of each overlay code.