The effect of spatial distance on the discriminability of colors in maps

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F16%3A33162134" target="_blank" >RIV/61989592:15310/16:33162134 - isvavai.cz</a>

Result on the web

<a href="http://www.tandfonline.com/doi/full/10.1080/15230406.2016.1140074" target="_blank" >http://www.tandfonline.com/doi/full/10.1080/15230406.2016.1140074</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/15230406.2016.1140074" target="_blank" >10.1080/15230406.2016.1140074</a>

Result language

angličtina

Original language name

The effect of spatial distance on the discriminability of colors in maps

Original language description

The spatial distance (gap) between map symbols can have a great impact on their discriminability, however, there is little empirical evidence to establish spatial and attribute thresholds. In this paper, we examine the effect of the spatial gap in discriminability of color hue and value, that is, we conducted an online study to obtain performance metrics; then an eye-tracking study to understand participants' strategies and cognitive processes. Participants completed two experimental tasks (compare two areas and decide if their color is the same; and compare three areas and rank them from the lightest to the darkest). The color distances and the spatial distances were strictly controlled for the compared areas. Our analyses confirmed that, overall, increasing the gap between colors has a consistent negative impact on the ability to differentiate them with both sequential and qualitative schemes. Furthermore, we observed that sequential schemes require larger color distances than qualitative schemes for discriminability. Finally, our results suggested that for qualitative colors, the largest tested color distance INCREMENT E00 = 10 yields considerably higher levels of accuracy in color discrimination (even when the spatial gap between the two colors is large), thus we recommend INCREMENT E00 = 10 to practicing cartographers and other information visualization designers.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DE - Earth magnetism, geodesy, geography

OECD FORD branch

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Project

<a href="/en/project/EE2.3.20.0170" target="_blank" >EE2.3.20.0170: Building of Research Team in the Field of Environmental Modeling and the Use of Geoinformation Systems with the Consequence in Participation in International Networks and Programs</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Cartography and Geographic Information Science

ISSN

1523-0406

e-ISSN

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Volume of the periodical

44

Issue of the periodical within the volume

3

Country of publishing house

GB - UNITED KINGDOM

Number of pages

17

Pages from-to

229-245

UT code for WoS article

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EID of the result in the Scopus database

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