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Computing Stable Demers Cartograms
[article]
2019
arXiv
pre-print
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We present a method to compute stable Demers cartograms, where each region is shown as a square and similar data yield similar cartograms. ...
Cartograms are popular for visualizing numerical data for map regions. Maintaining correct adjacencies is a primary quality criterion for cartograms. ...
Discussion and future work We described a linear program to compute stable Demers cartograms, based on separation constraints and minimizing distance between adjacent regions. ...
arXiv:1908.07291v2
fatcat:cxhsbjibnferpncxblyq5v4pqi
Multicriteria Optimization for Dynamic Demers Cartograms
2022
IEEE Transactions on Visualization and Computer Graphics
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We present a method to compute stable stable Demers cartograms, where each region is shown as a square scaled proportionally to the given numerical data and similar data yield similar cartograms. ...
cartograms is another important criterion alongside traditional cartogram criteria such as maintaining adjacencies. ...
CONCLUSIONS AND FUTURE WORK We described a linear program to compute stable Demers cartograms for dynamic data based on separation constraints and minimizing distance between adjacent regions. ...
doi:10.1109/tvcg.2022.3151227
pmid:35157586
fatcat:vg75ekx22vdllawfhy4gff563a
Visualizing and Analysing Public-Health Data Using Value-by-Area Cartograms: Toward a New Synthetic Framework
2008
Cartographica
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The effects of using cartograms in spatial statistical analysis were evaluated by comparing analytical results derived from cartograms with those based on choropleth maps. ...
Our results indicate that a comprehensive understanding of cartograms must include cognitive, analytical, and critical dimensions. ...
In addition, cartograms are often classified as contiguous, non-contiguous, Dorling-like, or pseudo cartograms (for details see Bortins and Demers 2002 ). ...
doi:10.3138/carto.43.1.3
fatcat:oqlo2qzbz5bbtjctehublnx3c4
Visualizing and Analysing Public-Health Data Using Value-by-Area Cartograms: Toward a New Synthetic Framework
2008
Cartographica
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2010; you can also visit the original URL.
The file type is application/pdf.
The effects of using cartograms in spatial statistical analysis were evaluated by comparing analytical results derived from cartograms with those based on choropleth maps. ...
Our results indicate that a comprehensive understanding of cartograms must include cognitive, analytical, and critical dimensions. ...
In addition, cartograms are often classified as contiguous, non-contiguous, Dorling-like, or pseudo cartograms (for details see Bortins and Demers 2002 ). ...
doi:10.3138/carto.43.1.003
fatcat:ezgcw45bbjcgvcqcu6hf42lrtu
Obesity in Canada: where and how many?
2005
International Journal of Obesity
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All these measures were based on the respondent's selfreported answers to a computer-assisted personal or telephone interview. ...
Cartograms were used in addition to traditional mapping to take into account the differences in population density between these small areas. ...
Acknowledgements We are indebted to Michael T Gastner and Mark Newman for their valuable help by generously sharing their algorithm for producing cartograms. ...
doi:10.1038/sj.ijo.0803168
pmid:16276358
fatcat:oxgje4cqj5gvtkinu2pehorrxu
Generating stable demers Cartograms and Iso-Hexagon cartograms
2019
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In this thesis we approach the topic of automated generation of stable Demers cartograms and iso-hexagon cartograms. ...
For this, we present an LP formulation which can be used to create stable sets of Demers cartograms and iso-hexagon cartograms. ...
To counteract this we can employ an iterative approach to creating stable cartograms. ...
doi:10.34726/hss.2019.68421
fatcat:ekeuvzft7ja6rlgyiwbieit3we
Comparison of ArcGIS and QGIS for applications in sustainable spatial planning
2014
unpublished
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While ArcGIS computes a mean global radiation of 5721 Wh/m², QGIS computes 3974 Wh/m² which represents a 30.5% difference. ...
Despite the required adoptions of the settings and data quality the features ran stable and no runtime errors occurred. ...
doi:10.25365/thesis.35758
fatcat:ivsiqp6cgfhb3o343zvzziixii
1810-1820 Copy editing: Sara King (English)
unpublished
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applications: image processing (raster-based), computer-aided design (CAD) (vector-based), mapping or map-making, and database management. 160 According to Maguire et al. (1991) , DeMers (2009), Chang ...
DeMers, 2009, pp. 313-332. 181 Cowen Chrisman, 2002; Harvey, 2008; DeMers, 2009 . 182 Schuurman, 2004 Boolean algebra is a subarea of algebra in which the values of the variables are the truth values ...
fatcat:3ysrtj4oybcppo2zceuvajbekq
Journal of Urban and Regional Analysis Wilfried HELLER-Identities and Conceptions of Border Area Population in East-Central and South-East Europe-Thematic Aspects and Questions of an Actual Research Field Margarita ILIEVA-Territorial Differences in Transformation Processes in Bulgaria
2011
unpublished
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At the very least, the situation has become stable and jobs are no longer being lost. Monthly figures for employment contracts confirm a similar pattern. ...
The differences between North and South Bulgaria are outlined by Stoyanov, Dimov (2006) , who claim that "a stable south-to-north dichotomy in GDP is arising. ...
Besides, the rich graphic -more than 100 maps, cartograms and photographic images -is one of the characteristics which increases the attractiveness of this book, emphasizing an essential aspect followed ...
fatcat:l7gtvbqin5ci7ata7rgz5q43zy