- Standardsignatur12314
- TitelA User-friendly Tool for Error Modelling and Error Propagation in a GIS Environment : Spatial Accuracy Assessment in Natural Resources and Environmental Sciences/ Second International Symposium
- VerfasserFrank Forier (*)Todd H. Mowrer (*)Frank Canters (*)Hamre R. H.
- Erscheinungsjahr1996
- SeitenS. 225-234
- Illustrationen15 Lit. Ang.
- MaterialUnselbständiges Werk
- Datensatznummer200047477
- QuelleSpatial Accuracy Assessment in Natural Resources and Environmental Sciences/ Second International Symposium ; RM-GTR-277, S. 225-234
- AbstractIn spite of a growing concern for spatial database accuracy today most commercial GIS software products do not incorporate tools for the modelling of error in individual data layers and for the tracking of error when data layers are manipulated and combined in GIS-based spatial analysis. This paper reports on design considerations that have been taken into account in the development of a system-independent tool for error modelling and error propagation in raster-formatted categorical data. The tool aims at an optimal use of available methods for formal error propagation and simulation modelling. Special attention is given to the parameterization of different error models, i.e. how to make optimal use of existing information on error in the source data. When simulating error in the data layers spatial autocorrelation in the error field can be taken into account. This allows a more realistic assessment of uncertainty for spatial analysis which involves the application of neighbourhood or global operations.
- SchlagwörterGIS, Fehlermodell, Fehlerfortpflanzung
- Klassifikation524.637 (Genauigkeit, Zuverlässigkeit)
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