Sylvain Lesage | Observable

Sylvain Lesage

(he/him)

Dataviz developer ✧ Freelance | Open for projects. Prototyping here with JS, d3, three.js.

https://rednegra.net

linkedin.com/in/sylvain--lesage/

https://github.com/severo

https://mastodon.social/@severo

https://huggingface.co/@severo

severo@rednegra.net

Public notebooks

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Showing 241-270 of 308 notebooks

Jan 26, 2020•3

Hello Automerge

Jan 22, 2020•7

Hello socket.io

Jan 15, 2020•4

Hello lz-string

Jan 8, 2020•3

Identify images with deterministic UUID

Dec 16, 2019•2 5

Hello tableschema

Dec 4, 2019

How to parse durations with moment.js

Dec 3, 2019•2

Three Formats to Export Videos: webm, sprite, or base64 in CSV

Nov 29, 2019•5

Extract a frame at time 't' from a video

Nov 29, 2019•4 1

Asynchronous Canvas Recorder with ccapture.js

Nov 28, 2019•9

Perspective rectifier - example

Nov 22, 2019•2

Perspective rectifier

Nov 22, 2019•8

Naive face tracking and extraction

Nov 22, 2019•1

Manipulating video using canvas (MDN tutorial)

Nov 19, 2019

Video and canvas (MDN tutorial)

Nov 19, 2019•1

Médias français - validations

Nov 18, 2019

Bolivia 20.10.19: ¿dónde estaban el millón de votos que faltaban en el TREP?

Aug 31, 2025•1

Bolivian elections - data cleaning

Nov 6, 2019•1

Bolivian elections

Oct 29, 2019

Sizes of canvas, images and SVG

Oct 28, 2019•13

d3.group can take an arbitrary number of keys

Oct 5, 2019•1

🤔 How to: Embed a Notebook in a Svelte App (two-way binding)

Sep 23, 2019•26 2

🤔 How to: Embed a Notebook in a Svelte App (without mutable)

Sep 20, 2019•7

🤔 How to: Embed a Notebook in a Svelte App

Sep 19, 2019•11

Dummy variables

Sep 3, 2019

Custom Time Format (d3 5.x)

Aug 13, 2019

Custom Time Format (d3 3.x)

Aug 13, 2019•1

Tour de France 2019 classification

Jul 23, 2019

Top posters on ObservableHQ forum

Jun 19, 2019•7

Football transfers race, by club

Jun 19, 2019•1

Showing 241-270 of 308 notebooks