JSM 2004 - Toronto

Abstract #302058

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Activity Number: 411
Type: Contributed
Date/Time: Thursday, August 12, 2004 : 8:30 AM to 10:20 AM
Sponsor: Section on Survey Research Methods
Abstract - #302058
Title: Computer Assisted Survey Data Collection for Geographic Features
Author(s): Sarah Nusser*+
Companies: Iowa State University
Address: Center for Survey Statistics and Methodology, Ames, IA, ,
Keywords: CASIC ; survey methods ; data collection ; geospatial data ; GIS ; GPS
Abstract:

Survey data often include characteristics of geographic features recorded as codes (e.g., type of land, block ID), text (e.g., address), or quantitative measurements (e.g., surface area of a tract of land). It is now possible to digitally capture spatial attributes (e.g., coordinates, boundaries) in addition to alphanumeric attributes of geographic features during data collection. Geospatial software tools used to record spatial data objects are quite complex relative to computer-assisted survey instruments, and very little is known about how tools and interfaces should be configured to minimize survey error. This paper will describe findings from recent studies in developing computer-assisted data collection systems for recording boundaries of land types. In one study, agricultural interviewers, who had not previously been exposed to computer-assisted data collection, used pen-based tablet computers to delineate field boundaries on digital photographs. The second investigation considered interface designs for collecting boundaries of land cover/use types within an area segment, as well as how changes over time should be recorded when the segment is revisited.

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