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Visualizing accessibility with choropleth maps
Proceedings of the 5th ACM SIGSPATIAL International Workshop on Location-based Recommendations, Geosocial Networks and Geoadvertising, 2021We present a system to visualize accessibility to various destinations from essential institutions such as schools and hospitals to common attractions such as beaches. Our visualization system supports real-time computations of driving distances by leveraging the path coherent pairs (PCP) decomposition which allows for fast computation between ...
David Li, Hanan Samet, Amitabh Varshney
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Personal and Ubiquitous Computing, 2018
Because of the disability in visualizing statistical data with spatiotemporal information of choropleth map, we propose a novel method banded choropleth map (BCM). This technique makes use of space filling, splits sub-regions with equal width or area, and then fills partitions with different colors. It can utilize limited screen space more sufficiently
Yi Du +5 more
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Because of the disability in visualizing statistical data with spatiotemporal information of choropleth map, we propose a novel method banded choropleth map (BCM). This technique makes use of space filling, splits sub-regions with equal width or area, and then fills partitions with different colors. It can utilize limited screen space more sufficiently
Yi Du +5 more
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Annals of the Association of American Geographers, 2010
Choropleth maps are commonly used to show statistical variation among map enumeration units. Mapmakers take into account numerous considerations and make many decisions to produce a product that will effectively communicate spatially complex information to the map user. One design consideration is the choice between classed or unclassed choropleth maps.
James Stewart, Patrick J. Kennelly
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Choropleth maps are commonly used to show statistical variation among map enumeration units. Mapmakers take into account numerous considerations and make many decisions to produce a product that will effectively communicate spatially complex information to the map user. One design consideration is the choice between classed or unclassed choropleth maps.
James Stewart, Patrick J. Kennelly
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Interactive Sonification of Choropleth Maps
IEEE Multimedia, 2005Auditory information is an important channel for the visually impaired. Effective sonification (the use of non-speech audio to convey information) promotes equal working opportunities for people with vision impairments by helping them explore data collections for problem solving and decision making.
null Haixia Zhao +4 more
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Knowledge Acquisition from Choropleth Maps
Cartography and Geographic Information Systems, 1993Today's computer graphics technology enables map users to acquire spatial knowledge in ways not possible with traditional static displays; for example, classes of data on a choropleth map can be sequenced from low to high values. Although sequencing and related approaches are often judged to be novel and exciting, it is unknown whether such approaches ...
Terry A. Slocum, Stephen L. Egbert
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APPLICATIONS OF BIVARIATE CHOROPLETH MAPS
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings, 2011Since their appearance two centuries ago, choropleth maps have become the most widely used map type for quantitative thematic cartography. Basic principle is the – typically classified – aggregation of data over regions previously defined (e.g. administration districts, distribution areas, etc.).
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Choropleth Map Production by Facsimile
The Cartographic Journal, 1978Abstract A continuous tone image can be produced by facsimile to simulate the various shaded patterns of a choropleth map. The image can be subsequently screened for half-tone reproduction. Up to 255 hues of tone can be reproduced. The facsimile technique removes the need for finding manufactured tones whose visual intensity is closely proportional to ...
Jean-Claude Muller, John L. Honsaker
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Conditioned Choropleth Maps and Hypothesis Generation
Annals of the Association of American Geographers, 2005Abstract The article describes a recently developed template for multivariate data analysis called conditioned choropleth maps (CCmaps). This template is a two-way layout of maps designed to facilitate comparisons. The template can show the association between a dependent variable, as represented in a classed choropleth map, and two potential ...
Daniel B. Carr +2 more
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