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SkillsCast

Doodle: Visualisation in Scala - Beginner

8th December 2016 in London at Business Design Centre

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In this talk, Noel will share more on Doodle, a Scala library for data visualisation that renders in the browser, to files, and on the desktop.

Scala is an integral part of many data analysis workflows, but when it comes to visualising the results practitioners must often turn to Javascript libraries like d3 or Highcharts, or Python libraries such as matplotlib. These libraries have several disadvantages. For a start, they require switching environments. Furthermore, they often lack useful abstractions, being either easy to use or flexible, but not both. For example, matplotlib provides a rigid system of predefined graphs, while d3 provides many low-level building blocks but lacks tools to easily combine them for common graphs.

Doodle is a new 2D visualisation library for Scala. It can render graphs on the desktop, to files (PDF and PNG), and, using Scala.js, to the browser as SVG. In this talk I will briefly describe how to use Doodle for common tasks, and then delve into its architecture. I'll show how standard functional programming techniques allows Doodle to provide powerful functionals at multiple levels of abstraction, yielding a library that is both easy to use and extremely flexible.

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Doodle: Visualisation in Scala - Beginner

Noel Welsh

Noel has over fifteen years experience in software architecture and development, and over a decade in machine learning and data mining. Examples of the projects he's been involved with include one of the first commercial products to apply machine learning to the Internet (eventually acquired by Omniture), a BAFTA award winning website, and a custom CMS used daily by thousands of students. Noel is an active writer, presenter, and open source contributor. Noel has a PhD in machine learning from the University of Birmingham.