This book presents the research papers accepted for the 21st AGILE Conference on Geographic Information Science, held at Lund University Geographical Information Systems (GIS) Centre, Sweden on 12-15 June 2018. It discusses the role of geospatial technologies in the digitalization of society and is intended primarily for professionals and researchers in fields that can benefit from geoinformation - both within and outside the area of geographic information science.

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Evaluating spatial data acquisition and interpolation strategies for river bathymetries.- PLANTING: Computing High Spatio-Temporal Resolutions of Photovoltaic Potential of 3D City Models.- Interpolation of rainfall through polynomial regression in the Marche Region (Central Italy).- 3D georeferencing of historical photos by volunteers.- Patterns of consumption and connectedness in GIS Web sources.- Charting the geographies of crowdsourced information in Greater London.- Supporting the monitoring of cheetahs in Kenya by mobile map apps.- A Top-Down Algorithm with Free Distance Parameter for Mining Top-k Flock Patterns.- Optimization and Evaluation of a High Performance Open-Source Map-Matching Implementation.- A Personalized Location-based and Serendipity-oriented Point of Interest Recommender Assistant Based on Behavioral Patterns.- A Positional Quality Control Test Based on Proportions.- Animation as a Visual Indicator of Positional Uncertainty in Geographic Information.