2292 - Explain which elements determine the quality of geospatial data

Explain which elements determine the quality of geospatial data

Concepts

  • [GD4-1] Data quality
    Geometric accuracy, factors influencing it, geometric accuracy and topological fidelity, geometric accuracy in survey and GPS mesurements, thematic accuracy, relations between thematic accuracy, geometric accuracy and topological fidelity, misclassification matrix, commission and omission, logical consistency, relations between resolution, precision, and accuracy, spatial resolution, thematic resolution, and temporal resolution, precision, uncertainties associated with coordinate precision, primary and secondary data sources. Particular application. That standard varies from one application to another. In general, however, the key criteria are how much uncertainty is present in a data set and how much is acceptable. Judgments about fitness for use may be more difficult when data are acquired from secondary rather than primary sources. Aspects of data quality include accuracy, resolution, and precision. Concepts of data quality, error, and uncertainty are also covered in Knowledge Areas CF Conceptual Foundations (in a theoretical context) and GC Geocomputation (in the context of analysis); the focus here is on the measurement and assessment of data quality.