More About LandView®
The LandView product contains two software programs - the LandView database manager and the MARPLOT® map viewer. These two programs work in tandem to create a simple computer mapping system that can display individual layers of information that have spatial information associated with them. For example, the LandView EPA database shows information reported to the EPA for a selection of EPA-regulated sites while MARPLOT provides the capability of identifying the sites on a map.
The LandView database program allows users to browse and query records extracted from the Environmental Protection Agency’s Envirofacts Warehouse, demographic statistics from the U.S. Census Bureau’s Decennial Census, and the USGS Geographic Names Information System. The LandView program provides the following capabilities:
- Display current or queried records on a map.
- Calculate the population and housing counts within a radius.
- Export data to popular spreadsheet and database formats.
- Locate a street address on the map.
- Create thematic maps displaying census demographic data.
- Provide Internet access to the online databases of EPA, Census and USGS.
The MARPLOT desktop mapping system creates computerized maps that the user can customize by turning on or off various map layers such as roads, hazardous waste facilities, schools and places. These maps cover the entire United States and display:
- EPA regulated sites.
- A detailed network of major and minor roads (over 6.3 million miles), rivers, and railroads based on the U.S. Census Bureau's TIGER/Line® files.
- Legal entities (states, counties, cities and towns, and congressional districts).
- Census statistical entities (such as census tracts and block groups).
- Geographic names for places, features, and areas from the USGS Geographic Names Information System.
In addition, MARPLOT has the following capabilities:
- It can select and display sites based on feature name, its location within a specified radius from a point on the map, or its location within another map object such as legal or statisical area.
- Identify the state, county, census tract and block group associated with the position of the MARPLOT map pointer.
