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Dynamic Visualization of Spatio-Temporal Densities of Moving Objects: i2maps: integrated information maps
KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geoinformatik och Geodesi.
KTH, School of Architecture and the Built Environment (ABE), Urban Planning and Environment, Geoinformatik och Geodesi.
2011 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

i2maps is an integrated information map and is designed as a web-based client-server structure that makes spatio-temporal data available on the Web in form of a map. The client-server structure consist of two components the HTML/JavaScript-component that manages the user interface and communication to the Python-component, which handles the data storage, access and processing. The developers of i2maps created i2maps as an open source software to make it flexible and usable for the public.


To create an i2map several steps must be performed. First step is to create either a database where all spatio-temporal data is inserted or retrieve the data directly through a data crawler, i.e. live from the Web. Then, the code in both the Python and HTML/JavaScript component needs to be written, or if their example codes are reused, adjusted so that the data can be visualized (how much adjusting depends on the task and how well the code that is reused is compatible with the new application). If the code has been adapted the transformation and smoothening also must be changed to fit the area’s extent and the data preconditions, this is necessary to make it work.


The purpose of this paper is to create an i2map to visualize the density in the Stockholm region over five days. In doing so, the flexibility and usefulness of i2maps is analysed. The result presented is primarily an i2map, which we created based on the data collected from GPS probes of taxis.

Place, publisher, year, edition, pages
2011. , 24 p.
SoM EX, KAND 2011-09
Keyword [en]
dynamic geographic web visualization
National Category
Computer Science
URN: urn:nbn:se:kth:diva-87053OAI: diva2:501543
Subject / course
Educational program
Bachelor of Science
2011-05-25, 5055, Drottning Kristinas väg 30, Stockholm, 11:00 (English)
Available from: 2012-02-14 Created: 2012-02-14 Last updated: 2012-02-14Bibliographically approved

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