The article deals with the representation of spatial data in the framework of a metamodel. The metamodel is supplemented with a subsystem for evaluating data quality. Descriptors for a particular set of spatial data are provided.

Keywords: meta-model, quality of spatial data, set of descriptors evaluation, quality assessment

The article describes the problem of uncertainty estimation by GUM method and Monte Carlo method on the example of educational measuring procedures and the limits of methods applicability. Examples of the transformation of distributions are presented.

Keywords: measurement uncertainty, propagation of distributions, Monte Carlo method, influence quantity

The article provides an overview of the software designed for the calculation of measurement uncertainty. A comparison of the main features and capabilities are performed. The information about the used analysis methods, the presence of informative support and the conditions of distribution and use of the software are presented.

Keywords: uncertainty, measurement result, software, method of processing measurement results