About Data Lifetime (2013)
A blog post that influenced a lot my thinking about data and software, and that is still relevant in the AI era and helps me to shape my consulting offering.
Blog - Sylvain Lesage
Web development and data visualization.
Latest posts
Virtual Scrolling for Billions of Rows — Techniques from HighTable
Techniques used in HighTable to efficiently render and navigate billions of rows in the browser using lazy loading, slicing, scrollbar downscaling, local scrolling, and vertical/horizontal scroll decoupling.
Parquet with GEOMETRY type is not GeoParquet
Parquet with GEOMETRY and GEOGRAPHY is not GeoParquet. The two standards are compatible, and can be combined, with the caveat that the columns must be encoded as WKB. GeoParquet has more features, while Parquet with GEOMETRY and GEOGRAPHY brings native support for geospatial data in the Parquet format.
Parse, don't validate
The principle of 'Parse, don't validate' is to use the typing system to make illegal states unrepresentable and push the burden of proof upward as far as possible, but no further.
Hello World
This is my first blog post. Hello world!
Know your candidate to uninominal deputy (Bolivia)
Review of a tool by Mauricio Foronda, to find out who are the candidates for uninominal deputy in your electoral circumscription in Bolivia.
Bolivia 20.10.19: ¿dónde estaban el millón de votos que faltaban en el TREP?
Un primer análisis geográfico de los resultados parciales y finales de la elección presidencial 2019 en Bolivia.