LandView® and the Internet
LandView is a fully functional stand-alone application, yet its functionality is significantly enhanced by integration with the Internet at each level of operation. This Help article identifies and comments on the functionality enhancement brought to LandView by the Internet.
The LandView Main Page
The LandView application opens to its Home page. Besides providing navigation to its contained databases-Census 2000, the U.S. EPA's database of Regulated Facilities and the USGS's Geographic Names Information System, LandView Home provides pathways to its companion MARPLOT® mapping application, to two frequently used utilities and to the Internet.
The most obvious of these connections are the icons of the four federal agencies responsible for the LandView product-U.S. Environmental Protection Agency (EPA), U.S. Census Bureau, the National Oceanic and Atmospheric Administration (NOAA) and the U.S. Geological Survey (USGS). Each icon is an Internet connection to the Home page of the named agency providing pathways to all facets of the agency's operation. However, there is more . . .
Metadata is data about data. Most frequently, we accept data from a responsible source at face value. However, serious researchers need to document their findings-the time span over which the data is gathered, the conditions under which it was gathered, what is included, what is not included . . . This is metadata. Metadata for all agencies contributing data to LandView is maintained on at a Census Bureau Internet site and provides pathways to agency sites and to specific elements of the databases.
LandView Help Files
LandView Help files are placed on each computer as part of LandView installation. However, Help is continually under review in response to user inquiry. While a look at Help, as installed, may adequately respond to a user concern, a more recently updated Help available on the Internet may lead the user to a similarly expressed concern by others. A key feature of On-Line Help is the heading User Notes. As users' concerns are addressed and the Help is modified, User Notes identifies the concern and the Help modification.
The LandView Tutorial
Although the LandView Tutorial may not be as updated as frequently as the Help, it will be reviewed periodically and modified as necessary. The updated Tutorial will then be posted to the Web.
The Census Bureau Database
LandView 6 considerably amplifies the data available from Census 2000 as compared to LandView 5. LandView 5 contains the Census 2000 DP-1 table, data extracted from Census 2000 Summary File 1-the Census 2000 Profile of General Demographic Characteristics. LandView 6 includes not only the DP-1 tables but also the Tables DP-2 through DP-4-Social, Economic and Housing data taken from Census 2000 Summary File 3.
However, even this rich harvest of data may not satisfy all users' needs. The Web Link button available at each level of Census geography provides additonal insights. Two new links are provided-first to a broad discussion of Census 2000 and to the American FactFinder and secondly to a topic-by-topic listing of specific census concerns.
The U.S. Environmental Protection Agency's Database
Presented in the U.S. EPA's LandView database is basic information on each facility that is required to respond to EPA regulation. Here is presented minimum data-facility identifiers and identification of individual media programs under which the facility may be regulated. The Web Link button available at each individual record takes the user to EPA's EnviroFacts Warehouse-detailed records relating to a facility's reporting under each and all of the media programs under which the facility is regulated.
The Geographic Names Information System Database-the GNIS
The GNIS provides a record for individual points of geographic points of interest as recorded by the USGS. The records provide locational information and, in some case, background historical information. However, identification of an entry provides an Internet pathway to an expanded range of Internet data . . .
First, the Web Link provides information on the USGS 7.5' quad sheet containing the entitity. Following, though, are a number of additional Internet linkages providing geographic references.
The first linkage is to TopoZone.com, an Internet site of Maps a la Carte, Inc-a USGS Digital Cartographic Business Partner and a member of the International Map Trade Association. TopoZone may amplify data available from the USGS quad sheet.
A second linkage is to FIPS55 Data. FIPS, for Federal Information Processing Standards provides code identifiers for named populated places, state and county divisions and other locational entities of the United States.
A Digital Raster Graphic (DRG) linkage allows saving of the mapped location as a portion of the USGS Topographic map. Saved images are in the JPEG format. Many computer graphic programs can convert JPEG formats to BMP formats. A BMP format allows using the downloaded image as a base map in MARPLOT.
A Digital Orthophoto Quadrangle (DOQ) allows saving of the mapped location as an aerial photograph. The aerial photograph can be converted to a BMP format allows using the downloaded image as a base map in MARPLOT.
A Show Feature Location linkage connects to maps maps produced from the U.S. Census Bureau's TIGER Map Server.
A Find the Watershed linkage connects to a Watershed site maintained by the U.S. EPA.
Shapefiles are a public domain mapping format developed by Environmental Systems Research Institute, ESRI®. Shapefiles are an output format for ESRI mapping products and can exchange information with some commercial Geographic Information Systems (GIS). The Shape to MIE (shp2mie) utility downloaded as part of the LandView installation allows converting shapefiles to a MARPLOT import format. As such, the output of most GIS systems can be brought into MARPLOT and related to LandView/MARPLOT topological and population information.
A search for "shape file" or "shapefiles" in an on-line search engine, such as Yahoo, will bring many hits.
Federal agencies are another source for shapefile data. A search for "maps" and/or "shapefiles" in an agency's Home Page is usually productive. The LandView Help topic, Unique Solutions, features a LandView/MARPLOT study on earthquakes based on USGS shapefile data.
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