By G. David Garson
The innovations of analytic mapping and of geographic info structures (GIS) became more and more vital instruments for reading census, crime, environmental and buyer information. The authors of this crucial quantity speak about information entry, transformation and practise matters, and the way to choose the proper analytic images innovations via a evaluation of varied GIS and customary information assets, reminiscent of census items, TIGER documents, and CD-ROM entry. They describe each one strategy, assessment its assumptions and necessities and supply illustrative output for pattern information utilizing chosen software program. Researchers and directors who have to deal with info of geographic destinations will locate this e-book an invaluable advisor to structures for storing, retrieving,
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Extra info for Analytic mapping and geographic databases
The vector approach links point coordinates into whole forms such as polygons to create map regions and curves that define individual map elements. Vector-based maps store geographic information as chains of x-y coordinates, used for drawing map images. The vector basis allows maps to be drawn in different scales, orientations, and layers without distortion. In addition to GIS software, commercial vector graphics packages such as Corel Draw, Applause II, Harvard Graphics, Freelance Plus, and Mirage can be used to manipulate vector files.
Map Files Map files, not to be confused with geographic files, usually contain information about the names of the geographic and other files that make up the geographic information system; data on labels, layers, and other layout aspects of the map, including file names used; program settings such as label and layer settings; and annotations added by the user, to be incorporated at printout time. Some GIS packages call these image files. The map file may contain names pointing to further files for this purpose, such as page layout files (color, scale, and other data for printouts of features and lines) and view files containing the coordinates for map borders.
1992) Analytic Mapping and Geographic Databases. Sage University Paper series on Quantitative Applications in the Social Sciences, 07-087. Newbury Park, CA: Sage. OR (2) Garson, G. , & Biggs, R. S. 07-087). Newbury Park, CA: Sage. Page iii Contents Series Editor's Introduction v 1. Introduction 1 Terminology 3 Selected Examples of Analytic Mapping and Geographic Databases in the Social and Policy Sciences 11 2. Geographic Databases 18 Geographic Information Systems 18 Data Reconciliation Across Different Geographic Bases 24 Common Data Sources 26 3.
Analytic mapping and geographic databases by G. David Garson