ESRI vs BREWER: An Evaluation of Map Use with Alternative Colour Schemes amongst the General Public

This small study evaluates the effectiveness of selected sets of colour schemes used in ESRI‟s ArcMap and ColorBrewer in communicating information on choropleth maps. Subjects conducted map reading tasks using online questionnaires and their performance was captured. The results did not show significant differences in performance associated with colour scheme - subjects were highly successful in direct acquisition tasks irrespective of the set(s) of scheme used. However, performances were consistently poor for „distribution‟ tasks. The results suggest limited spatial capabilities in the sample and highlight the need to test for general spatial ability in such experiments

Framework for Studying Spatially Ordered Treemaps

We propose a comprehensive research framework to empirically investigate complex visual inference tasks, support mechanisms (animated transition using morphing or vector overlay), and how spatial ability affects people’s learning and knowledge construction process from Spatially Ordered Treemaps (SOTs) as compared to conventional choropleth maps. This effort is inspired by the call of the new International Cartographic Association commission on Cognitive Visualization (CogVis), which proposes “developing a sound theoretical framework based upon cognition and perception discipline” (Fabrikant, 2011). The framework aims to explore SOTs in the context of both ‘in-vitro’ and ‘in-vivo’ settings. This study is grounded in cartography but also conforms to experimental design standards in per-ception and cognitive sciences

Flow trees for exploring spatial trajectories

A trajectory is a directed path that defines a link between two spatial locations. That path may be as simple as the Euclidean shortest distance between a start and end point, or may involve a more complex traversal through time and space to travel from start to end. Within GI analysis, trajectories are used to represent phenomena such as movement of people as migration and commuting, good

Discovery exhibition: using spatial treemaps in local authority decision making and reporting

At Leicestershire County Council we are using spatial treemaps to analyse labour markets and commuting behaviour. This novel visualization technique, presented at InfoVis 2008, has resulted in a number of insights and discoveries. Transport planners in our organization indicate that the graphics are effective and have advantages over alternatives. As researchers in the local authority we report upon using these graphics to inform decision makers and residents in the county’s evidence base for sustainable transport planning

A Study of Infant Sickness

Abstract Not Provided