LandView® IV Help It is recommended that you use the most current version of LandView IV Help that is located at the following Web site: http://www.census.gov/geo/lv4help/tabcontents.html If you are unable to access this Web site, you can continue using the PDF file that you are currently viewing, for it contains the entire contents of the Web site as of 09/21/2000. The most recent version of the LandView IV Help (including a downloadable PDF file) can always be found at this site. If you choose to download a later version, please remember to load it into the folder where LandView IV was originally installed (typically C:\LV4) and overwrite the older version. LandView® IV Web Site A Web Site has been established to provide the latest information on LandView IV, including software updates and other items of interest to LandView IV users. This site is can be found at: http://landview.census.gov LandView IV Help Table of Contents LandView® IV Help Table of Contents Last Updated: 9/21/00 What's New in Getting ESRI Shapefile About LandView MARPLOT® LandView IV? Started Translator The LandView Databases Census EPA USGS The LandView Program Internet Access Show on Map MARPLOT Summarize Sharing Menu Population Switch to List Estimator View The FileMaker Query Interface Reset to Show Thematic All Records Mapping Comments or questions may be sent to: [email protected] Source: U.S. Census Bureau Last Revised: Thursday, 21-Sep-00 11:31:06 Census 2000 | Subjects A to Z | Search | Product Catalog | Data Access Tools | FOIA | Privacy · Policies | Contact Us | Home http://www.census.gov/geo/lv4help/tabcontents.html [9/22/2000 12:19:37 PM] About LandView® About LandView® LandView® IV is a CD-ROM based "Federal Geographic Data Viewer" that provides database extracts from the Environmental Protection Agency (EPA), the U.S. Census Bureau, and the United States Geological Survey (USGS). These databases are presented in a geographic context on maps that contain jurisdictional entities (states, counties, cities & towns, congressional districts, and others), detailed network of roads, rivers, and railroads, census block group and tract polygons, schools, hospitals, churches, cemeteries, airports, zip codes and other landmark features. The LandView system consists of two software programs: the LandView database system and the MARPLOT® mapping system. These two systems communicate with each other to allow you to make map inquiries based on a selection of database records, and to make database inquiries based on a selection of map objects. History of LandView LandView has its roots in the CAMEO system (Computer-Aided Management of Emergency Operations). CAMEO was developed by the Environmental Protection Agency and the National Oceanic and Atmospheric Administration to facilitate the implementation of the Emergency Planning and Community Right-to-Know Act. This far-reaching law requires communities to develop emergency response plans addressing chemical hazards and to make available to the public information on chemical hazards in the community. CAMEO DOS, first released in 1991, contained a mapping program called MARPLOT, which provided access to computerized street maps based on the Bureau of Census TIGER/Line® files. MARPLOT was subsequently enhanced to include Census boundaries and demographic statistics, and was included in the TIGER/Line® 1992 CD-ROM product, under the name of LandView. With the addition of EPA-regulated sites and more detailed demographic data, LandView became a CD-ROM product in itself, released in 1995 as LandView II. Being a DOS-based program, LandView II was limited by the DOS memory restrictions, and was difficult to run in memory-intensive environments, such as local-area networks. To solve that problem, and to provide additional capabilities and ease of use, the LandView software was converted to the Windows platform. Two programs were developed, MARPLOT for Windows (the mapping engine), and LandView (the database search and query engine). Both programs have also been converted to run on the Macintosh platform. This Windows/Macintosh cross-platform system, with the inclusion of updated Census and EPA data, and data from several other federal agencies was released on CD-ROM as LandView III in January 1998. Back to Table of Contents Source: U.S. Census Bureau Last Revised: Wednesday, 20-Sep-00 17:41:05 Census 2000 | Subjects A to Z | Search | Product Catalog | Data Access Tools | FOIA | Privacy · Policies | Contact Us | Home http://www.census.gov/geo/lv4help/about_lv.html [9/22/2000 12:19:39 PM] What's New in LandView® IV? What's New in LandView® IV? There are a number of new features and improvements in LandView IV. Below are some of the highlights. ● 32-bit LandView software interface supporting both MAC and Windows platforms. Identical look and feel on both platforms. Supports faster computer processors. ● Internet interface that connects to sponsoring agency sites allowing the user to retrieve the most recent data as well as Help information. ● Takes advantage of Digital Versatile Disc (DVD) technologies to provide entire U.S. on a single disc thereby allowing cross state analysis throughout the U.S. ● Up-to-date detailed map information for roads and related features based upon TIGER/Line® 1998. ● An expanded U.S. Geological Survey (USGS) database containing over 1.6 million records from the Geographic Names Information System (GNIS). ● Improved thematic mapping offering several color schemes and automated range scaling. ● Redesigned radius calculation based upon 7 million 1990 census blocks. ● MARPLOT® mapping program has several enhancements including WYSIWYG printing of maps and a shape file translator utility Shp2Mie that allows importing ESRI Shape Files into the MARPLOT User map. Back to Table of Contents Source: U.S. Census Bureau Last Revised: Wednesday, 20-Sep-00 16:43:15 Census 2000 | Subjects A to Z | Search | Product Catalog | Data Access Tools | FOIA | Privacy · Policies | Contact Us | Home http://www.census.gov/geo/lv4help/whats_new.html [9/22/2000 12:19:40 PM] Getting Started Getting Started There are two approaches to using LandView: 1) querying one of the LandView databases and viewing the query results as selected objects on a map, or 2) searching the MARPLOT map and viewing the search results as a selection of LandView database records. These approaches are described below. 1)Querying the databases and viewing the query results as selected objects on a map In LandView choose a database from the LandView Startup Menu. If you choose Census Areas, you can select the Census database containing data for a specific type of census geography from the labeled file folder tab buttons. For example, to find census data for Washington County Indiana you would first click on the "states" tab to bring up the states database screen. You would then press the "Switch to List View" button to scroll through the entire database of states alphabetically. Going through list view in a database is a good way to find data records if you are not sure of the precise name of the item you are looking for. After you have highlighted Indiana, you can then click on the "Switch to Form View" button in the upper left-hand corner of the screen. This will allow you to view census data for Indiana in the customized screen. The next step is to click on the "Counties" tab to bring up a list of Indiana counties. You would then again press the "Switch to List View" button to scroll through the entire database of states alphabetically. (Please note that places, congressional districts, counties, MCDs, tract/BNAs, and census block groups nest hierarchically within state. For that reason, the list views for the above geographies will be limited to the current state selected under the "States" tab.) Another way to find data records is by choosing the Query function by pressing the "Query" button on the customized screen. This will bring up a screen that allows you to plug in a search criterion. The default field to search will be "County" for this example, although you can choose any other field to search on. For example, if you were searching for all the counties named Washington in the entire U.S., you would type in "Washington" into the county box and then press the ENTER key. The customized form will reappear with the first county in the match list. The left-hand portion of the screen will indicate that it found 31 records out of 3231 that matched the criteria. For more information on screen controls and indicators see FileMaker Interface and Query. However you manage to find a particular data record, you can show the selected item on the map by choosing "Show on MARPLOT map" on the customized screen. A "MARPLOT Show Options" box will appear that allows you to select what you would like to view: Pressing the "Current" button will map the current record showing in the form. Pressing the "All" button will map all records in the set and then highlight the records in the found set. Pressing the "Only" button will map only records in found set. Using the query for "Washington" mentioned above, the current button will map the county shown on the form. The "All" button will map all counties in the entire U.S. and then highlight by using tiny red squares the 31 selected counties. The "Only " button will map just the 31 counties found by the query. Whether you look for a single item or a group of items, the system will bring the MARPLOT program forward, and the record(s) will be selected (MARPLOT places tiny red squares around the border of selected polygons, or around the symbol of selected point objects).