Journal of Geovisualization and Spatial Analysis

The Journal of Geovisualization and Spatial Analysis [JGSA] provides an advanced forum for theories and applications of geospatial analysis and visualization. ...

List of Papers (Total 62)

Urban Green Spaces as Carbon Sinks: A Comparative Scientometric Analysis of Global Research Trends and China’s Role

This study presents a comparative scientometric analysis of 526 publications from the Web of Science Core Collection and China National Knowledge Infrastructure (CNKI) database to decode the global research trajectory on urban green space (UGS) carbon sinks and to delineate China’s distinctive role. Analysis reveals a clear evolution in research focus and output. Early work...

Graph Construction and Interactive Visualization for Virtual Tours Based on Redundant Panoramic Image Collections

Recent developments in consumer-grade panoramic cameras led to new possibilities in creating virtual tours, e.g., through museums or real estate. Most current approaches for the creation of these tours are based on manual generation of navigable links between the images. We consider cases where large numbers of georeferenced images are taken by multiple users and introduce an...

Redefining Swiss Territorial Typologies: An Unsupervised Learning Approach to the Rural–Urban Continuum

Urban expansion in Europe has accelerated over recent decades, significantly blurring the boundaries between urban and rural landscapes and giving rise to extensive peri-urban areas. These dynamic transformations demand timely and effective landscape classifications to track environmental, demographic, and socio-economic developments and for a deeper understanding of human...

Enhancing Tree Species Mapping in Arkansas’ Forests Through Machine Learning and Satellite Data Fusion: A Google Earth Engine–Based Approach

Arkansas’ subtropical climate nurtures extensive forested regions, particularly within the Ozark-St. Francis and Ouachita National Forests. Despite this, the state lacks an up-to-date high-resolution map detailing the distribution of tree species within its forests. This study harnesses the power of machine learning, specifically the Random Forest (RF), Gradient Tree Boosting...

Variable Mapper: Developing, Implementing, and Evaluating an Online Tool for Multidimensional Spatial Data Visualization

This paper presents a user study of Variable Mapper, an interactive web-based geospatial visualization tool that aims to address the gap in multidimensional spatial data analysis. In the era of big data, researchers and policymakers often grapple with complex, multi-faceted concepts situated within ‘wicked problems.’ These problems require the investigation of large numbers of...

(Un)just Distribution of Visible Green Spaces? A Socio-Economic Window View Analysis on Residential Buildings: The City of Cologne as Case Study

As urbanization processes, climate disasters such as heat waves, or pandemics such as COVID-19, increase, prioritizing visible green space is crucial to provide equitable access to green spaces for vulnerable groups with limited mobility. In the long term, this will enable sustainable and resilient urban development. In this study, we examined green window views in residential...

Box Height-Independent Differential Bar Cumulation (DBC) for 3D Raster Surface Fractal Dimension Analysis

The box-counting method is the predominant technique for calculating fractal dimensions (FD) for raster data. However, past studies focused primarily on measuring the FD of 2D binary raster. While fields like image analysis have advanced with methods such as differential box counting (DBC) to measure the FD of 3D surfaces, this approach has yet to be applied to geographical...

Geospatial Assessment of Healthcare Accessibility and Equity in Qatar in Preparation for the 2022 FIFA World Cup

Accessibility to healthcare is one of the significant components of social determinants of public healthcare and is integral to societies’ overall well-being and economic prosperity. This study intends to assess changes in spatial distributions and accessibility of healthcare services within Qatar for 2010–2020, specifically concerning preparation for the 2022 FIFA World Cup...

Exploring the Relationship Between Time Series of Sentinel-1 Interferometric Coherence Data and Wild Edible Mushroom Yields in Mediterranean Forests

Edible wild mushrooms constitute a valuable marketable non-wood forest product with high relevance worldwide. There is growing interest in developing tools for estimation of mushroom yields and to evaluate the effects that global change may have on them. Remote sensing is a powerful technology for characterization of forest structure and condition, both essential factors in...

Polyline Morphing for Animated Schematic Maps

Thematic maps allow for the visual analysis of spatial data. When comparing two map states, preserving the mental map of a user facilitates the comparison. One way to achieve this is to use animated transitions between the states. This work presents an algorithm for computing such animations, called morphs, between schematized map objects, a technique particularly pertinent in...

Visualizing Convergent Pressures on Arctic Development

A rapidly changing Arctic has impacted biophysical and human systems while creating new economic opportunities. Spatially identifying locations with development potential in this changing environment requires characterizing convergences in critical enabling/constraining factors occurring in a particular place. However, mapping techniques based on simple overlays of spatially...

Assessment of Machine Learning Algorithms for Land Cover Classification in a Complex Mountainous Landscape

Mapping land cover (LC) in mountainous regions, such as the Gilgit-Baltistan (GB) area of Pakistan, presents significant challenges due to complex terrain, limited data availability, and accessibility constraints. This study addresses these challenges by developing a robust, data-driven approach to classify LC using high-resolution Sentinel-2 (S-2) satellite imagery from 2019...

AU3-GAN: A Method for Extracting Roads from Historical Maps Based on an Attention Generative Adversarial Network

In recent years, the integration of deep learning technology based on convolutional neural networks with historical maps has made it possible to automatically extract roads from these maps, which is highly important for studying the evolution of transportation networks. However, the similarity between roads and other features (such as contours, water systems, and administrative...

Towards Responsible Urban Geospatial AI: Insights From the White and Grey Literatures

Artificial intelligence (AI) has increasingly been integrated into various domains, significantly impacting geospatial applications. Machine learning (ML) and computer vision (CV) are critical in urban decision-making. However, urban AI implementation faces unique challenges. Academic literature on responsible AI largely focuses on general principles, with limited emphasis on the...

Evolution of Farmland Abandonment Research from 1993 to 2023 using CiteSpace-Based Scientometric Analysis

Farmland abandonment significantly influences food and ecological security. To provide a comprehensive understanding of the current research landscape and evolving developments in the field of farmland abandonment, we have summarized the advancements and future trends in this research domain. This review employed CiteSpace software and incorporated geographic visualization...

MANGLEE: A Tool for Mapping and Monitoring MANgrove Ecosystem on Google Earth Engine—A Case Study in Ecuador

Mangroves, integral to ecological balance and socioeconomic well-being, are facing a concerning decline worldwide. Remote sensing is essential for monitoring their evolution, yet its effectiveness is hindered in developing countries by economic and technical constraints. In addressing this issue, this paper introduces MANGLEE (Mangrove Mapping and Monitoring Tool in Google Earth...

Improving Urban Mapping Accuracy: Investigating the Role of Data Acquisition Methods and SfM Processing Modes in UAS-Based Survey Through Explainable AI Metrics

In this study, we investigated the accuracy of surface models and orthophoto mosaics generated from images acquired using different data acquisition methods at different processing levels in two urban study areas with different characteristics. Experimental investigations employed single- and double-grid flight directions with nadir and tilted (60°) camera angles, alongside the...

Geospatial Structure and Evolution Analysis of National Terrestrial Adjacency Network Based on Complex Network

The first law of geography is one of the most important concepts in geographical analysis, revealing the significant role of spatial proximity. At present, some current international relation studies or geographic network analysis studies tend to build corresponding network models according to different themes, but the most basic level of geographic neighborhoods is intentionally...

Automated Map Generalization: Emerging Techniques and New Trends (Editorial)

Automated map generalization has been a major area of research for decades but has still not reached maturity. Besides the needs for more adaptive algorithms, a fundamental question remains: How can we transfer human generalization knowledge into a computational system more effectively? Previous efforts do not seem capable to fully overcome the “knowledge acquisition bottleneck...

Integrating Multiscale Geospatial Analysis for Monitoring Crop Growth, Nutrient Distribution, and Hydrological Dynamics in Large-Scale Agricultural Systems

Monitoring crop growth, soil conditions, and hydrological dynamics are imperative for sustainable agriculture and reduced environmental impacts. This interdisciplinary study integrates remote sensing, digital soil mapping, and hydrological data to elucidate intricate connections between these factors in the state of Ohio, USA. Advanced spatiotemporal analysis techniques were...

Assessment of Disparity in Accessing Railway Stations in Thailand: an Application Geographic Information System Network Analysis

Ensuring that people from all regions in a country can easily access railway stations is a crucial objective in the development of transportation and mobility systems and is essential for the convenient travel within the country. Furthermore, accurately assessing accessibility in disadvantaged areas is pivotal in designing and implementing development policies for equitable and...

Users’ Visual Experience During Temporal Navigation in Forecast Weather Maps on Mobile Devices

This study investigated the impact of graphical user interface (GUI) design on the efficiency and effectiveness of map-based tasks on mobile devices, using time-based weather data as a case study. Three different GUI designs (button-type, circle-type, and slidebar) were tested in a between-subjects design, with 50 participants completing a set of map-based tasks on each GUI...