@article{Meier, author = {Meier, Sebastian}, title = {The Marker Cluster}, series = {International Journal of Agricultural and Environmental Information Systems}, volume = {7}, journal = {International Journal of Agricultural and Environmental Information Systems}, number = {1}, publisher = {IGI Global}, address = {Hershey}, issn = {1947-3206}, doi = {10.4018/IJAEIS.2016010102}, pages = {28 -- 43}, abstract = {The growing amount of gathered, stored and available data is creating a need for useful mass-data visualizations in many domains. The mapping of large spatial data sets is not only of interest for experts anymore, but, with regard to the latest advances in web cartography, also moves into the domain of public cartographic applications. One interactive web-based cartographic interface design pattern that helps with visualizing and interacting with large, high density data sets is the marker cluster; a functionality already in use in many web-based products and solutions. In this article, the author will present their ongoing research on the problem of "too many markers." They will present an empirical evaluation and comparison of marker cluster techniques and similar approaches, including heatmaps and tiled heatmaps. They conclude with a first concept for overcoming some of the obstacles that they were able to identify in their study and thereby introduce a new direction for further research.}, subject = {Big Data}, language = {en} } @incollection{Meier, author = {Meier, Sebastian}, title = {Visualizing Large Spatial Time Series Data on Mobile Devices}, series = {Cartography : Maps Connecting the World}, booktitle = {Cartography : Maps Connecting the World}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-17738-0}, issn = {1863-2351}, doi = {10.1007/978-3-319-17738-0_12}, publisher = {Fachhochschule Potsdam}, pages = {161 -- 173}, abstract = {This paper introduces an approach for visualizing large spatial time series data sets on mobile devices. The HeatTile system (Meier et al. 2014) is used and extended with a progressive loading approach, the stream approach. By combining those two approaches, this study aimed to overcome the performance and bandwidth limitations inherent to mobile devices. This chapter focuses on the technological advantages of the presented approach in a performance comparison with other common approaches. Furthermore, an animated time series visualization is introduced, as well as an interface designed specifically for the presented method in order to emphasize the advantages of the approach. To further highlight the possible applications of the method, two real-world use cases are presented.}, subject = {Visualisierung}, language = {en} } @incollection{NagelPschetzStefaneretal., author = {Nagel, Tina and Pschetz, Larissa and Stefaner, Moritz and M{\"u}ller, Boris}, title = {m{\ae}ve - Eine interaktive Tabletop-Installation}, series = {Kultur und Informatik : interaktive Systeme}, booktitle = {Kultur und Informatik : interaktive Systeme}, publisher = {H{\"u}lsbusch}, address = {Boizenburg}, isbn = {978-3-940317-72-8}, pages = {287 -- 298}, subject = {Mensch-Maschine-Kommunikation}, language = {de} } @article{DoerkPietschCredico, author = {D{\"o}rk, Marian and Pietsch, Christopher and Credico, Gabriel}, title = {One view is not enough High-level visualizations of a large cultural collection}, series = {Information Design Journal}, volume = {23}, journal = {Information Design Journal}, number = {1}, publisher = {John Benjamins Publishing}, address = {Amsterdam}, issn = {1569-979X}, doi = {10.1075/idj.23.1.06dor}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:525-26609}, pages = {39 -- 47}, abstract = {As cultural institutions are digitizing their artifacts and interlinking their collections, new opportunities emerge to engage with cultural heritage. However, it is the often comprehensive and complex nature of collections that can make it difficult to grasp their distribution and extent across a variety of dimensions. After a brief introduction to the research area of collection visualizations, this paper presents a design study visualizing an aggregated collection from diverse cultural institutions in Germany. We detail our iterative design process leading to prototypical implementations of four stylistically and functionally coordinated visualizations, each one focusing on different facets of the collection.}, subject = {Visualisierung}, language = {en} } @article{BeechamRooneyMeieretal., author = {Beecham, R. and Rooney, C. and Meier, S. and Dykes, J. and Slingsby, A and Turkay, C. and Wood, J. and Wood, B. L. and Wong, W.}, title = {Faceted Views of Varying Emphasis (FaVVEs)}, series = {Computer Graphics Forum}, volume = {35}, journal = {Computer Graphics Forum}, number = {3}, publisher = {Wiley-Blackwell}, address = {Oxford}, issn = {1467-8659}, doi = {10.1111/cgf.12900}, pages = {241 -- 249}, abstract = {Many datasets have multiple perspectives - for example space, time and description - and often analysts are required to study these multiple perspectives concurrently. This concurrent analysis becomes difficult when data are grouped and split into small multiples for comparison. A design challenge is thus to provide representations that enable multiple perspectives, split into small multiples, to be viewed simultaneously in ways that neither clutter nor overload. We present a design framework that allows us to do this. We claim that multi-perspective comparison across small multiples may be possible by superimposing perspectives on one another rather than juxtaposing those perspectives side-by-side. This approach defies conventional wisdom and likely results in visual and informational clutter. For this reason we propose designs at three levels of abstraction for each perspective. By flexibly varying the abstraction level, certain perspectives can be brought into, or out of, focus. We evaluate our framework through laboratory-style user tests. We find that superimposing, rather than juxtaposing, perspective views has little effect on performance of a low-level comparison task. We reflect on the user study and its design to further identify analysis situations for which our framework may be desirable. Although the user study findings were insufficiently discriminating, we believe our framework opens up a new design space for multi-perspective visual analysis.}, subject = {Visualisierung}, language = {en} } @inproceedings{OttenHildebrandNageletal., author = {Otten, Heike and Hildebrand, Lennart and Nagel, Till and D{\"o}rk, Marian and M{\"u}ller, Boris}, title = {Shifted Maps}, series = {2018 IEEE VIS Arts Program}, booktitle = {2018 IEEE VIS Arts Program}, publisher = {Institute of Electrical and Electronics Engineers (IEEE)}, address = {Berlin}, organization = {Institute of Electrical and Electronics Engineers (IEEE)}, isbn = {978-1-7281-2805-4}, doi = {10.1109/VISAP45312.2018.9046054}, pages = {1 -- 10}, abstract = {We present a hybrid visualization technique that integrates maps into network visualizations to reveal and analyze diverse topologies in geospatial movement data. With the rise of GPS tracking in various contexts such as smartphones and vehicles there has been a drastic increase in geospatial data being collect for personal reflection and organizational optimization. The generated movement datasets contain both geographical and temporal information, from which rich relational information can be derived. Common map visualizations perform especially well in revealing basic spatial patterns, but pay less attention to more nuanced relational properties. In contrast, network visualizations represent the specific topological structure of a dataset through the visual connections of nodes and their positioning. So far there has been relatively little research on combining these two approaches. Shifted Maps aims to bring maps and network visualizations together as equals. The visualization of places shown as circular map extracts and movements between places shown as edges, can be analyzed in different network arrangements, which reveal spatial and temporal topologies of movement data. We implemented a web-based prototype and report on challenges and opportunities about a novel network layout of places gathered during a qualitative evaluation.}, subject = {Karte}, language = {en} } @inproceedings{MeierTostHeidmann2019, author = {Meier, Sebastian and Tost, Jordi and Heidmann, Frank}, title = {On the relevance of cartography : an interaction design perspective}, series = {Proceedings of the International Cartographic Association}, booktitle = {Proceedings of the International Cartographic Association}, number = {2}, address = {Bern}, organization = {International Cartographic Association (ICA)}, doi = {10.5194/ica-proc-2-84-2019}, pages = {6}, year = {2019}, abstract = {We see more cartographic products in our digital world than ever before. But what role does cartography play in the modern production of cartographic products? In this position paper, we will argue that the democratization and diffusion of cartographic production has also led to the presumed "fading relevance" of cartography. As an argument against this notion, we highlight starting points for the field of cartography to improve modern cartographic production through its inherent cartographic knowledge.}, subject = {Kartografie}, language = {en} } @article{BludauDoerkHeidmann, author = {Bludau, Mark-Jan and D{\"o}rk, Marian and Heidmann, Frank}, title = {Relational perspectives as situated visualizations of art collections}, series = {Digital Scholarship in the Humanities}, volume = {36}, journal = {Digital Scholarship in the Humanities}, number = {Supplement 2}, publisher = {Oxford University Press}, address = {Oxford}, issn = {1477-4615}, doi = {10.1093/llc/fqab003}, pages = {ii17 -- ii29}, abstract = {With relational perspectives, we examine the potential of traversing cultural collections along the richness of individual facets and relations through the process of developing an exploration-centered visualization. Cultural collections can contain thousands of artifacts, of which each typically possesses a diverse set of properties and individual facets constituting a unique relationship to the rest of the collection. Therefore, to create an appropriate representation of the complex data of each underlying artifact, oftentimes, it is not only interesting to get an overview of the entire collection from one perspective, but to explore the specific context of an artifact and the various relations it may have to other items. To investigate the potential of relational perspectives, we selected an art collection as a particularly promising case study. By following and reporting from a collaborative and iterative design process with an art museum, we developed a web interface that contrasts a collection overview with three situated visualizations each exposing a different kind of relational perspective on the art collection from an artifact.}, subject = {Kulturelle Einrichtung}, language = {en} } @inproceedings{Pschetz, author = {Pschetz, Larissa}, title = {{hi}stories}, series = {CHI EA '08 : CHI '08 Extended Abstracts on Human Factors in Computing Systems}, booktitle = {CHI EA '08 : CHI '08 Extended Abstracts on Human Factors in Computing Systems}, publisher = {Association for Computing Machinery}, address = {New York}, isbn = {978-1-60558-012-8}, doi = {10.1145/1358628.1358915}, pages = {3693 -- 3698}, abstract = {With more and more digital information being produced by individuals every day, we will soon be able to use it to understand the past. Based on this premise this paper presents {Hi}Stories, a system to support the creation and access of user generated contents as historical evidences. In {Hi}Stories users aggregate contents from Internet and are invited to contribute their own material. It combines a number of research themes: collaborative information structuring, combination of contents from online services, and visualization and browsing of structured information collections.}, subject = {Elektronische Bibliothek}, language = {en} } @inproceedings{NagelDuval, author = {Nagel, Till and Duval, Erik}, title = {Muse}, series = {Proceedings of the 2nd International Workshop on Research 2.0. : At the 5th European Conference on Technology Enhanced Learning: Sustaining TEL}, volume = {675}, booktitle = {Proceedings of the 2nd International Workshop on Research 2.0. : At the 5th European Conference on Technology Enhanced Learning: Sustaining TEL}, publisher = {RWTH}, address = {Aachen}, issn = {1613-0073}, pages = {48 -- 52}, abstract = {This paper introduces Muse, an interactive visualization of publications to explore the collaborations between institutions. For this, the data on co-authorship is utilized, as these signify an existing level of collaboration. The affiliations of authors are geo-located, resulting in relations not only among institutions, but also between regions and countries. We explain our ideas behind the visualization and the interactions, and briefly describe the data processing and the implementation of the working prototype. The prototype focuses on a visualization for large tabletop displays, enabling multiple users to explore their personal networks, as well as emerging patterns in shared networks within a collaborative public setting. For the prototype we used the publication data of the EC-TEL conference.}, subject = {Visualisierung}, language = {en} } @inproceedings{NagelHeidmannCondottaetal., author = {Nagel, Till and Heidmann, Frank and Condotta, Massimiliano and Duval, Erik}, title = {Venice unfolding}, series = {NordiCHI '10 : Proceedings of the 6th Nordic Conference on Human-Computer Interaction: Extending Boundaries}, booktitle = {NordiCHI '10 : Proceedings of the 6th Nordic Conference on Human-Computer Interaction: Extending Boundaries}, publisher = {Association for Computing Machinery}, address = {New York}, isbn = {978-1-60558-934-3}, doi = {10.1145/1868914.1869019}, pages = {743 -- 746}, abstract = {We introduce Venice Unfolding, a case study on tangible geo-visualization on an interactive tabletop to enable the exploration of architectural projects in Venice. Our tangible user interface consists of a large display showing projects on a map, and a polyhedral object to browse these data interactively by selecting and filtering various metadata facets. In this paper we describe a prototype employing new methods to communicate territorial data in visual and tangible ways. The object reduces the barrier between the physical world and virtual data, and eases the understanding of faceted geographical data, enabling urban planners and citizens alike to participate in the discovery and analysis of information referring to the physical world.}, subject = {Gegenst{\"a}ndliche Benutzeroberfl{\"a}che}, language = {en} } @inproceedings{NagelDuvalHeidmann, author = {Nagel, Till and Duval, Erik and Heidmann, Frank}, title = {Visualizing Geospatial Co-authorship Data on a Multitouch Tabletop}, series = {Smart Graphics : 11th International Symposium, SG 2011, Bremen, Germany, July 18-20, 2011. Proceedings}, booktitle = {Smart Graphics : 11th International Symposium, SG 2011, Bremen, Germany, July 18-20, 2011. Proceedings}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-642-22571-0}, issn = {1611-3349}, doi = {10.1007/978-3-642-22571-0_13}, pages = {134 -- 137}, abstract = {This paper presents Muse, a visualization of institutional co-authorship of publications. The objective is to create an interactive visualization, which enables users to visually analyze collaboration between institutions based on publications. The easy to use multitouch interaction, and the size of the interactive surface invite users to explore the visualization in semi-public spaces.}, subject = {Visualisierung}, language = {en} } @inproceedings{NagelDuvalVandeMoere, author = {Nagel, Till and Duval, Erik and Vande Moere, Andrew}, title = {Interactive Exploration of Geospatial Network Visualization}, series = {CHI EA '12 : CHI '12 Extended Abstracts on Human Factors in Computing Systems}, booktitle = {CHI EA '12 : CHI '12 Extended Abstracts on Human Factors in Computing Systems}, publisher = {Association for Computing Machinery}, address = {New York}, isbn = {978-1-4503-1016-1}, doi = {10.1145/2212776.2212830}, pages = {557 -- 572}, abstract = {This paper presents a tabletop visualization of relations between geo-positioned locations. We developed an interactive visualization, which enables users to visually explore a geospatial network of actors. The multitouch tabletop, and the large size of the interactive surface invite users to explore the visualization in semi-public spaces. For a case study on scientific collaborations between institutions, we applied and improved several existing techniques for a walk-up-and-use system aimed at scientists for a social setting at a conference. We describe our iterative design approach, our two implemented prototypes, and the lessons learnt from their creation. We conducted user evaluation studies at the two on-location demonstrations, which provide evidence of the prototype usability and usefulness, and its support for understanding the distribution and connectivity in a geospatial network.}, subject = {Visualisierung}, language = {en} } @inproceedings{KauerRidleyDoerketal., author = {Kauer, Tobias and Ridley, Arran and D{\"o}rk, Marian and Bach, Benjamin}, title = {The Public Life of Data}, series = {CHI Conference on Human Factors in Computing Systems (CHI '21)}, volume = {2021}, booktitle = {CHI Conference on Human Factors in Computing Systems (CHI '21)}, publisher = {Association for Computing Machinery}, address = {New York}, doi = {10.1145/3411764.3445720}, pages = {1 -- 12}, abstract = {This research investigates how people engage with data visualizations when commenting on the social platform Reddit. There has been considerable research on collaborative sensemaking with visualizations and the personal relation of people with data. Yet, little is known about how public audiences without specific expertise and shared incentives openly express their thoughts, feelings, and insights in response to data visualizations. Motivated by the extensive social exchange around visualizations in online communities, this research examines characteristics and motivations of people's reactions to posts featuring visualizations. Following a Grounded Theory approach, we study 475 reactions from the /r/dataisbeautiful community, identify ten distinguishable reaction types, and consider their contribution to the discourse. A follow-up survey with 168 Reddit users clarified their intentions to react. Our results help understand the role of personal perspectives on data and inform future interfaces that integrate audience reactions into visualizations to foster a public discourse about data.}, subject = {Visualisierung}, language = {en} } @incollection{NagelPschetzStefaneretal., author = {Nagel, Till and Pschetz, Larissa and Stefaner, Moritz and Halkia, Matina and M{\"u}ller, Boris}, title = {m{\ae}ve - An Interactive Tabletop Installation for Exploring Background Information in Exhibitions}, series = {Human-computer interaction : ambient, ubiquitous and intelligent interaction ; 13th international conference, HCI International 2009, San Diego, CA, USA, July 19 - 24, 2009 ; proceedings, part III}, booktitle = {Human-computer interaction : ambient, ubiquitous and intelligent interaction ; 13th international conference, HCI International 2009, San Diego, CA, USA, July 19 - 24, 2009 ; proceedings, part III}, publisher = {Springer}, address = {Berlin}, isbn = {978-3-642-02580-8}, doi = {10.1007/978-3-642-02580-8_53}, pages = {483 -- 491}, abstract = {This paper introduces the installation m{\ae}ve: a novel approach to present background information in exhibitions in a highly interactive, tangible and sociable manner. Visitors can collect paper cards representing the exhibits and put them on an interactive surface to display associated concepts and relations to other works. As a result, users can explore both the unifying themes of the exhibition as well as individual characteristics of exhibits. On basis of metadata schemata developed in the MACE (Metadata for Architectural Contents in Europe) project, the system has been put to use the Architecture Biennale to display the entries to the Everyville student competition.}, subject = {Benutzeroberfl{\"a}che}, language = {en} } @techreport{HeidmannThomMeier, author = {Heidmann, Frank and Thom, Andreas and Meier, Sebastian}, title = {Wachstumskern Potenzial : MSNI - Mobile Semantische Navigation und Information, Teilprojekt 3: Nutzerschnittstellen und Content-Visualisierung. Projekt-Schlussbericht ; Berichtslaufzeit: 02/12 bis 01/14}, publisher = {FHP, FB Design}, address = {Potsdam}, doi = {10.2314/GBV:834735105}, pages = {57}, subject = {Mobiles Internet}, language = {de} } @incollection{HeidmannMeierMatthies, author = {Heidmann, Frank and Meier, Anita and Matthies, Denys J.C.}, title = {A brief Survey on Understanding the Interaction between Human and Technology at the Task of Pedestrian Navigation}, series = {Proceedings of the International Summer School on Visual Computing 2015 : August 17-21, 2015 in Rostock, Germany}, booktitle = {Proceedings of the International Summer School on Visual Computing 2015 : August 17-21, 2015 in Rostock, Germany}, publisher = {Fraunhofer}, address = {Stuttgart}, isbn = {978-3-8396-0960-6}, pages = {135 -- 140}, subject = {Bilderzeugung}, language = {en} } @article{BrueggemannBludauDoerk, author = {Br{\"u}ggemann, Viktoria and Bludau, Mark-Jan and D{\"o}rk, Marian}, title = {The Fold}, series = {Digital humanities quarterly : DHQ}, volume = {14}, journal = {Digital humanities quarterly : DHQ}, number = {3}, address = {USA}, organization = {Association for Computers and the Humanities}, issn = {1938-4122}, pages = {1 -- 16}, abstract = {We propose the philosophical notion of the fold as an evocative vocabulary for the design and critique of interactive data visualizations. An expanding range of application areas, such as digital art history and literary studies, illustrates the potential of data visualization for research and education in the humanities. Coinciding with the increasing currency of data as evidence in the humanities, this research addresses a growing interest in data visualization for visual analysis and argumentation. For example, cultural collection visualizations promise a range of possibilities for visual and interactive representations of digital cultural heritage, used both for free exploration and focused research. Based on the concept of the fold, prominently advanced by Gilles Deleuze, this paper outlines a critical framework that draws attention towards the complexity of the underlying data. The fold offers a way to analyze and conceptualize visualizations through the lens of three integrated operations: explication, implication, and complication. It is an opportunity to think of interactive visualizations as portals into coherent, elastic, and ultimately infinite information spaces. Accordingly, it rejects the separation between interactivity and visual encoding and draws attention to the transitions between multiple states of a visualization. We identify design patterns of the fold in data visualizations, devise a framework for the critical interpretation of interactivity in data visualization, and demonstrate the implications for the digital humanities.}, subject = {Visualisierung}, language = {en} } @masterthesis{Jun, type = {Bachelor Thesis}, author = {Jun, Mi-Ran}, title = {Das Prinzip des Faltens : Als grundlegende Software-Methapher f{\"u}r Benutzeroberfl{\"a}chen}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:525-opus-1399}, school = {Fachhochschule Potsdam}, abstract = {Das Prinzip des Faltens soll als Metapher f{\"u}r grafische Benutzeroberfl{\"a}chen weiterentwickelt werden. Es soll untersucht werden, ob das Erlernen und das Verst{\"a}ndnis der Bedienung bestimmter Programmfunktionen im Wesentlichen durch Faltprinzipien erleichtert werden. Eine Vielzahl von Funktionen wird heute in einem einzigen Ger{\"a}t integriert. Die so entstehenden Hybriden stellen aus Sicht des Designs jedoch die Frage nach Form und Gestalt des Artefakts. Wegen der kleinen Gr{\"o}ße der mobilen Ger{\"a}te ist es folglich problematisch all diese unterschiedlichen Interfaces auf der Benutzeroberfl{\"a}che zu integrieren. Versucht man diese unterschiedlichen Interfaces zu vereinen, ist das Ergebnis ein un{\"u}bersichtliches, verwirrendes Interface mit eingeschr{\"a}nkter Bedienung. Zudem findet das Interface f{\"u}r die obsolete Desktop-Metapher immer noch Verwendung. Durch den bezug zu real existierenden Arbeitsumgebungen sind Desktop-Systeme zwar einfach zu bedienen und verst{\"a}ndlich, doch k{\"o}nnen sie nicht ausgebaut werden. Problematisch ist vor allem die kleine Gr{\"o}ße der Desktops, um die Desktop-Metapher konvenabel auszuf{\"u}hren. Demnach ist eine konvenable Bedienung aufgrund der veralteten Desktop-Metapher sowie des Interfaces hinsichtlich der Miniaturisierung der mobilen Ger{\"a}te nur eingeschr{\"a}nkt m{\"o}glich oder sogar undurchf{\"u}hrbar. Die Arbeit erhebt hiernach den Anspruch, {\"U}berlegungen anzustreben, die den Begriff ‚Interface' neu definieren sowie die daraus resultierende These „Das Paradigma ‚Falten' ist die Zukunft der ‚ePaper-Technologie' zu diskutieren.}, subject = {Computer}, language = {de} } @article{SchwanJackeKleymannetal., author = {Schwan, Hannah and Jacke, Janina and Kleymann, Rabea and Stange, Jan-Erik and D{\"o}rk, Marian}, title = {Narrelations}, series = {Digital humanities quarterly : DHQ}, volume = {13}, journal = {Digital humanities quarterly : DHQ}, number = {3}, publisher = {Association for Computers and the Humanities}, address = {USA}, issn = {1938-4122}, pages = {1 -- 27}, abstract = {We present findings from interdisciplinary research at the intersection between literary studies, information visualization, and interface design. Despite a growing interest in text visualization among literary scholars, so far, narrative visualizations are not designed to support the particular tasks involved in narratological analysis and often fail to reveal nuanced narratological features. One major outcome of our iterative research and design process is Narrelations, a novel visualization technique specifically suited for analyzing and interpreting narrative levels of a story and temporal aspects of its narrative representation. The visualization provides an overview of the nesting and distribution of narrative levels, integrates the representation of temporal phenomena, and facilitates the examination of correlations between these aspects. With this research we explore how collaboratively designed visual encodings and interaction techniques may allow for an insightful analysis at a high level coupled with a close inspection of text passages. We discuss prior work relevant to our research objectives and explain the specific characteristics of narrative levels and temporal aspects of narrative representation. After describing the research process and design principles, we apply the visualization on a test corpus of eight annotated German short stories and demonstrate its heuristic value for literary analyses and interpretations. In particular, we explore the intricate connections between the literary content of the novellas and their narrative form.}, subject = {Literaturwissenschaft}, language = {en} }