Approaches to Uncertainty in Spatial Data
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چکیده
Geographical information systems (GIS) are designed to handle large amounts of information about the natural and built environments. Any such large collection of observational information is prone to uncertainty in a number of forms. If that uncertainty is ignored there may be anything from slightly incorrect predictions or advice, to analyses that are completely logical, but fatally flawed. In either case, future trust in the work of the system or the operator can be undermined. It is therefore of crucial importance to all users of GIS that awareness of uncertainty should be as widespread as possible. Fundamental to that understanding is the nature of the uncertainty – the subject of this chapter.
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