Overview of @tudelft3d efforts regarding
open data/software/science
Hugo Ledoux
2018-11–01
VU, Amsterdam, NL
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3D geoinformation group @ TU Delft
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• since 2015
• 4 tenured staff (soon 5)
• 3 postdocs
• 9 PhDs
• many diff backgrounds
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Our focus: urban environment and 3D geo-data
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Designing, developing, and implementing better systems to
reconstruct, model, and analyse 3D cities, buildings, and landscapes
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Residential building
Jaffalaan 9, Delft
owner: Jan Smit
120m2
1824
Park “de tuin”
800m2
Canal “de Schie”
depth = 3.34m
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solar potential
shadow analysis
noise modelling
energy estimation
bomb detonation
wind turbulence
pollutant tracking
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Standardisation of 3D geoinformation
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Open software?
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All (most?) of our code is online
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All (most?) of our code is online
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• your work reach practitioners
• insight into practitioners’ work
• gives us new funding opportunities
• NL/EU grants favour open-source software
• you can build up open-source libraries
• personally, I’m more “complete”, I relate more to students
• journals increasingly request code/data
Good things about open software
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[…] referees have the right to view the
data and code that underlie a work […],
even if these have not been provided
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• takes time
• takes a lot of time
• often thankless work (you hear only when it crashes)
• some people think you work for free
• no “brownie points” at unis (changing quickly
though)
Less good things about open software
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Open data?
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Standards are super important for us
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Standards are super important for us
since 1990s we have int’l efforts,
otherwise nothing would work…
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Open geo-data? NL is paradijs!
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Open geo-data? NL is paradijs!
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BUT: mostly 2D datasets!
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AHN dataset
Actueel Hoogtebestand Nederland
www.ahn.nl
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Whole NL == ~700 billion points
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3dfier: our software to reconstruct 3D for apps
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We distribute some datasets on our website
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We helped Kadaster reconstruct the whole NL in 3D
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We helped Kadaster reconstruct the whole NL in 3D
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—> structured & searchable data repository
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3DBAG: buildings
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3DBAG: buildings at diff heights
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• way easier to publish papers, teach, share
• reproducible science: you give data with paper
• you help other researchers, you create
collaborations
• please be “good scientists”: you use? you give back!
Good things about using open data
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Open science?
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3D geoinformation group @ TU Delft
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3D geoinformation group @ TU Delft
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Its code is also open for anyone to see
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Its code is also open for anyone to see
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everyone in the group can edit it