Implementation of Heat Maps in Geographical Information System – Exploratory Study on Traffic Accident

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F18%3A73587444" target="_blank" >RIV/61989592:15310/18:73587444 - isvavai.cz</a>

Result on the web

<a href="https://www.degruyter.com/view/j/geo.2018.10.issue-1/geo-2018-0029/geo-2018-0029.xml" target="_blank" >https://www.degruyter.com/view/j/geo.2018.10.issue-1/geo-2018-0029/geo-2018-0029.xml</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1515/geo-2018-0029" target="_blank" >10.1515/geo-2018-0029</a>

Result language

angličtina

Original language name

Implementation of Heat Maps in Geographical Information System – Exploratory Study on Traffic Accident

Original language description

In this study, the authors created an overview of the usage of heat maps as a GIS visualization method. In the first part of the paper, a significant number of studies was evaluated, and the technique was thoroughly described to set up a base level for further research. At this moment, the most used input data for heat maps are point data. While these data fit the method very well, also studies based on line and polygon data were found. The second part of the paper is devoted to an exploratory study on traffic accident data of the Olomouc city, Czech Republic. Even spatial distribution of the dataset by geographical information system makes it the perfect example of heat map usage. These data were visualized in multiple ways changing color range, kernel size, radius, and transparency. Two groups of users were created in order to evaluate these heat maps. One group was consisting of those educated or working in cartography. The second one was consisting of the general public. Created heat maps were shown to these volunteers and their task was to decide their preferred solution. Most of the users chose bright colors with a negative feeling, such as red, for traffic accident visualization. The best settings for transparency was identified to be around 50%. The final questions were about map readability based on radius. This setting is tied to map scale but follows a common trend throughout the research. The results of this work are a general set of recommendations and specific evaluation of the exploratory study regarding traffic accidents spatial data. The general recommendations include basic principles of the method, implementation by GIS, suitable data and correct usage of heat maps. The evaluation is answering specific questions regarding heat map settings, style and presentation in the specific case.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2018

Confidentiality

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

Name of the periodical

Open Geosciences

ISSN

2391-5447

e-ISSN

—

Volume of the periodical

10

Issue of the periodical within the volume

1

Country of publishing house

PL - POLAND

Number of pages

18

Pages from-to

"367–384"

UT code for WoS article

000444319400006

EID of the result in the Scopus database

2-s2.0-85051926590