Catalog of Holdings

Study Report

Study Number: ZA-011-001-2-1-United States-ICPSR-1620

Subject Area: Refernce Materials in Machine Readable Form

Bibliographic Citation: Basic geographic and historic data for interfacing ICPSR data sets, 1620-1983 [United States].  [machine-readable data file] / Sechrist, Robert  [principal investigator(s)] / Ann Arbor, MI: Inter-university Consortium for Political and Social Research  [distributor].

Originating Archive Number: 8159

Date Accessioned: 2/15/1996

Number of Files Received: 1

Comments: Data file received via FTP.

Access Status: Access limited to UW-Madison campus

Date Ordered: 2/15/1996

Documentation: 1 volume hard copy.

Abstract: This dataset contains the basic information about all counties in the coterminous United States needed for mapping county-based data. It provides an interface between ICPSR data sets and SAS/GRAPH, SURFACE II, and SYMAP. Cloropleth and isopleth maps can be produced by match merging this data set with any other data set (special facilities exist for ICPSR data sets) and running the merged data against a cartographic program. Isopleth mapping programs, using latitude and longitude coordinates provided for each county seat, can produce maps of ICPSR data. Cloropleth mapping of county level data can be accomplished after merging by running the merged data set through SAS/GRAPH. The data are stored in card image format with one card per case. There are nine variables and 3,066 cases.

SUBJECT TERMS: computer cartographics. county-level. United States.

Media/File Reports:

ICPSR Direct