
Jan Zak
Software Engineer / Consultant
High-performance Graph and Geospatial Applications
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Posts

Styling ocean depth data in Mapbox Studio
Oceans deserve more attention and a better visual look than just a solid blue color

Scale up your D3 graph visualisation, part 2
WebWorker layout and PIXI.js rendering performance improvements

Scale up your D3 graph visualisation
WebGL & Canvas with PIXI.js

Partial edge drawing
Edge crossings and the resulting visual clutter are hidden in the undrawn parts of the edges

Avoid cycles in Cypher queries
Cypher query that matches cycles can cause unpleasant surprises

Speaker identification meets graphs
Detecting unique speakers across audio recordings
Open-source

pixi-graph
Graph visualization library using PIXI.js and Graphology

deck.gl-leaflet
deck.gl plugin for Leaflet

leaflet-lasso
Lasso selection plugin for Leaflet

cytoscape-lasso
Lasso selection plugin for Cytoscape

cytoscape-mapbox-gl
Mapbox GL plugin for Cytoscape

mapbox-gl-draw-geodesic
Geodesic plugin for Mapbox GL Draw

mapbox-gl-draw-waypoint
Waypoint plugin for Mapbox GL Draw

objectpath
Expression language for querying JSON objects using ANTLR4

cert-chain-resolver
SSL certificate chain resolver
Projects

Weather layers for Mapbox GL JS
Particle animation and color overlay custom WebGL layers
Data: GFS, OSCAR, OSTIA, WAVEWATCH

Climate layers for ArcGIS JS
Color overlay and bioregion vector layers
Data: GFS, CAMS, Natural Earth, OneEarth

Atmospheric pressure contour layer for Leaflet
Isolines, isoline labels, low/high pressure labels
Data: GFS

Sub-sea oil well path
Interactive 3D visualization of sub-sea oil well path

yFiles drill down extension for Tableau

Ribose ISO 10303-11 EXPRESS parser
Language parser using ANTLR4
Jan Zak
Strnadovych 1015/6
190 00 Praha 9
Czech Republic
Reg. no: 76281507
Natural person registered in the Trade Licensing Register of the Czech Republic since 21/4/2008