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Dynamic visualisation of million-tip trees: the OneZoom project

View ORCID ProfileYan Wong, View ORCID ProfileJames Rosindell
doi: https://doi.org/10.1101/2020.10.14.323055
Yan Wong
1OneZoom CIO, Office 7, 35-37 Ludgate Hill, London, EC4M 7JN, UK
2Big Data Institute, University of Oxford, Oxford, UK
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  • ORCID record for Yan Wong
James Rosindell
1OneZoom CIO, Office 7, 35-37 Ludgate Hill, London, EC4M 7JN, UK
3Department of Life Sciences, Silwood Park Campus, Imperial College London, Buckhurst Road, Ascot, Berkshire, SL5 7PY, UK
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  • For correspondence: j.rosindell@imperial.ac.uk
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Abstract

  1. The complete tree of life is now available, but methods to visualise it are still needed to meet needs in research, teaching and science communication. Dynamic visualisation of million-tip trees requires many challenges in data synthesis, data handling and computer graphics to be overcome.

  2. Our approach is to automate data processing, synthesise data from a wide range of available sources, then to feed these data to a client-side visualisation engine in parts. We develop a way to store the whole tree topology locally in a highly compressed form, then dynamically populate metadata such as text and images as the user explores.

  3. The result is a seamless and smooth way to explore the complete tree of life, including images and metadata, even on a relatively old mobile device.

  4. The underlying methods developed have applications that transcend tree of life visualisation. For the whole complete tree, we describe automated ID mappings between well known resources without resorting to taxonomic name resolution, automated methods to collate sets of public domain representative images for higher taxa, and an index to measure public interest of individual species.

  5. The visualisation layout and the client user interface are both abstracted components of the codebase enabling other zoomable tree layouts to be swapped in and supporting multiple applications including exhibition kiosks and digital art.

  6. After eight years of work, our tree of life explorer is now broadly complete, it has attracted over 1.3 million users, and is backed by a novel long-term sustainability plan. We conclude our description of the OneZoom project by suggesting the next challenges that need to be solved in this field: extinct species and guided tours around the tree.

Competing Interest Statement

OneZoom CIO received a small payment from University of Maryland, as part of the Phylotastic project, to provide an API to access the popularity index. J.R. was part of an Imperial College London project that received funding from INEOS to work on Atlantic Salmon populations (the second most popular ray finned fish according to the present submission). Neither entity had any influence over the popularity scoring metrics themselves.

Footnotes

  • https://github.com/OneZoom/OZtree

  • http://www.onezoom.org

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY 4.0 International license.
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Posted October 14, 2020.
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Dynamic visualisation of million-tip trees: the OneZoom project
Yan Wong, James Rosindell
bioRxiv 2020.10.14.323055; doi: https://doi.org/10.1101/2020.10.14.323055
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Dynamic visualisation of million-tip trees: the OneZoom project
Yan Wong, James Rosindell
bioRxiv 2020.10.14.323055; doi: https://doi.org/10.1101/2020.10.14.323055

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