DEVELOPMENT OF METHODS AND TOOLS FOR CORRECTING LARGE VOLUMES OF SPATIAL DATA

Authors
  1. Collins, S.H.
  2. Lehan, T.J.
  3. Teasell, S.
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 (SBMS) for military and civil use are discussed. It was found that the presence 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. Data of the Canadian National Topographic Series (NTS) and World Bank II 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. Software was developed to connect line data into polygons and networks, and to interactively edit the results. It was found that the NTS data could be formed into connected cartographic features, but that the data could be improved for this purpose.
Report Number
DCIEM-CR-8106 — Contractor Report (Final)
Date of publication
15 Mar 1986
Number of Pages
91
DSTKIM No
87-01425
CANDIS No
50262
Format(s):
Hardcopy;Originator's fiche received by DSIS

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