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SVG Fundamentals

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Ggeneralsuboncomp@proton.me
Last edited Feb 26, 2024
Created on Feb 26, 2024

This example demonstrates the fundamental structure of a VizHub V3 visualization, displaying the text “Hello God World!” centered within a container using inline HTML and CSS. The code exports a `main` function that receives a `container` DIV element, whose `clientWidth` and `clientHeight` can be measured for responsive layout. A `fontSize` variable is set to 222 pixels and rendered using a template literal inside `container.innerHTML`. The example introduces the runtime’s key patterns for state management and hot reloading, serving as a starting point for building interactive SVG-based charts.

AI-generated description

A blank slate starting point showing the "Hello World" for the VizHub V3 Runtime Environment, which supports continuous hot reloading with interactive widgets.

  • There is no index.html - that's what triggers the V3 Runtime
  • The entry point is the main function exported from index.js
  • The main function takes an argument container, a DIV that has measurable dimensions using clientWidth and clientHeight
  • The second argument to main is an options object containing state and setState.
  • The state of the application is stored in state, which is initialized as an empty object {}.
  • The setState function can be called with a function that uses the previous state to create a new state object using immutable update patterns.
  • For an interactive example, see Mouse Follower.

Full course playlist: YouTube: Constructing Visualization 2024.

MIT Licensed

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