IDENTIFICATION OF PROBLEMS FOR THE CONTRACT DEVELOPMENT OF METHODS AND TOOLS FOR CORRECTING LARGE VOLUMES OF SPATIAL DATA

Authors
  1. Lehan, T.J.
  2. Collins, S.H.
Corporate Authors
Defence and Civil Inst of Environmental Medicine, Downsview ONT (CAN);Collins and Moon Ltd, Guelph ONT (CAN)
Abstract
The data requirements of a spatial database management system (SDBMS) for military or civil use are discussed. Data of the National Topographic Series and World Bank data were loaded into an SDBMS database, and were corrected by several techniques. The data were thinned and errors such as spikes and mismatches were corrected. It was found that the amount of explicit information in the data was the most important factor in the usefulness of the data for responding to queries. Six forms of spatial information with increasing amounts of explicit information are defined and discussed. It is suggested that these or similar forms be adopted nationally by all producers and users of large amounts of digital spatial data.
Date of publication
15 Oct 1985
Number of Pages
37
DSTKIM No
86-00324
CANDIS No
105950
Format(s):
Hardcopy;Originator's fiche received by DSIS

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