Study discipline:Informatics in Public Administration
Abstract:
The thesis focuses on the usability and accessibility considerations as an approach of
geoportals improvement. The aim of this thesis is to examine how usability and accessibility
concerns can support geoportals improvement, stressing the significance of user-centred
design principles and accessibility standards. The study evaluated two web-GIS applications,
Lithuania and Estonia, using heuristic assessment. The assessment involved experts examining
the systems against predefined usability principles. The results showed significant differences
between the two applications. Estonia had superior usability, with a more flexible scalebar
feature, while Lithuania had a routing feature. Both applications had shortcomings in legend
presentation, with Estonia having a broader range of layers and Lithuania's orthophoto layer
offering up-to-date imagery.