Polished code

azul

azul

azul is a 3D city model viewer for macOS. It is intended for viewing 3D city models in CityGML 1.0 and 2.0, CityJSON 1.0 and 1.1, IndoorGML, OBJ, OFF and POLY. It supports loading multiple files, selecting objects by clicking them or selecting them in the sidebar, toggling the visibility of individual items, and browsing their attributes. It is research software, but it is pretty stable and most datasets already work without problems. It is available under the GPLv3 licence.


pprepair

pprepair

(planar partition repair) ensures that a set of polygons form a valid planar partition, made of valid polygons and having no gaps or overlaps.

Read more:

Validation and automatic repair of planar partitions using a constrained triangulation. Ken Arroyo Ohori, Hugo Ledoux and Martijn Meijers. Photogrammetrie, Fernerkundung, Geoinformation 5, October 2012, pp. 613–630. ISSN: 1432–8364. 
@article{12pfg,
	author = {Ken {Arroyo Ohori} and Hugo Ledoux and Martijn Meijers},
	journal = {Photogrammetrie, Fernerkundung, Geoinformation},
	month = {oct},
	note = {ISSN: 1432--8364},
	pages = {613--630},
	title = {Validation and Automatic Repair of Planar Partitions Using a Constrained Triangulation},
	volume = {5},
	year = {2012}
}

prepair

prepair

(polygon repair) takes a possibly invalid polygon, gives it a consistent interpretation and returns a valid polygon according to the OGC Simple Features and ISO 19107 rules.

Read more:

A triangulation-based approach to automatically repair GIS polygons. Hugo Ledoux, Ken Arroyo Ohori and Martijn Meijers. Computers & Geosciences 66, May 2014, pp. 121–131. ISSN: 0098–3004. 
@article{14cg,
	author = {Hugo Ledoux and Ken {Arroyo Ohori} and Martijn Meijers},
	journal = {Computers \& Geosciences},
	month = {may},
	note = {ISSN: 0098--3004},
	pages = {121--131},
	title = {A triangulation-based approach to automatically repair {GIS} polygons},
	volume = {66},
	year = {2014}
}

Some useful bits and pieces

  • isochrones-mexico: Compute isochrones from GTFS data and display them in an interactive map
  • konturpop: Estimate urban populations from the Kontur population dataset
  • osmium-buildings: Count OSM buildings using the Osmium library
  • elevador: Create 3D city models from a 2D map and a point cloud
  • osclassifier: Classify Ordnance Survey MasterMap data into CityJSON classes
  • azul4d: Visualisation of 4D objects using Metal
  • lcc-tools: tools I developed during my PhD to construct and manipulate higher-dimensional linear cell complexes, such as incremental and non-incremental construction and extrusion
  • TriVis: small Mac visualiser to debug triangle-based algorithms
  • cgal-etc: (enhanced triangulation classes) add functionality to CGAL triangulations, such as labelling edges and removing constraints
  • imbiber: converts BibTeX to HTML using Ruby, includes a Jekyll plug-in
  • bibhtmler: converts BibTeX to HTML using PHP