Browsing by Subject "error"

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Access status: Restricted ,
Aproksymacja funkcjonałów liniowych w modelach obliczeń kwantowym i randomizowanym
(Data obrony: 2017-06-14) Warzecha, Elżbieta
Wydział Matematyki Stosowanej
Access status: Restricted ,
Aproksymacja i symulacje rozwiązań stochastycznych równań różniczkowych za pomocą algorytmu Milstein'a
(Data obrony: 2014-05-19) Dorzak, Krzysztof
Wydział Matematyki Stosowanej
Access status: Open Access ,
ISO 19113:2002 with reference to digital terrain models
(2011) Kulesza, Łukasz
The ISO 19113:2002 standard establishes the principles for quantifying the quality of geographic data and specifies components for reporting quality information. It also provides an approach to organizing information about data quality. According to it, the issue of quality is a multifactor problem and includes such elements like: completeness, logical consistency, positional accuracy, temporal accuracy, thematic accuracy. Its principles are applicable to digital geographic data, however they can be extended to many other forms of geographic data such as maps, charts and textual documents. For data users it answers a crucial question whether or not specific geographic data is of sufficient quality for their particular application. Additionally it may be used for describing quality requirements. Digital Terrain Models (DTM) are a very important information layer in GIS applications. Multiple spatial analyses are being held with the usage of DTM starting from simple queries, through map analysis derived from DTM: slope and aspect maps and finally finding application in complex modelling of environmental phenomenon. Recently more and more attention is paid to the GIS analysis credibility, which makes the quality issues and data sets accuracy more important then ever. Owing to fact that quality is an extensive concept, one criterion assessment cannot be applied to every possible situation. Domain of the problem as well as the goals of specific application need to be recognized and the acquired knowledge must be confronted with the information regarding possessed data. It is in connection with the reliability and fitness to use issue which states that every certain DTM is appropriate only for some set of applications, and the user must be aware of that. It is important for the user to have the sense of purpose. Whether a DTM is of sufficient quality for particular application depends on the data itself and on the purpose of its usage. In current work an attempt was made to discuss the issues regarding DTM quality in the light of guidelines included in ISO 19113:2002 Standard. Practical example of quality assessment of few chosen DTM obtained from different sources was introduced.