Check out the first people on our lineup: #ReactJS #ReactAmsterdam

Check out the first people on our lineup:  #ReactJS #ReactAmsterdam

  • React Amsterdam is a celebration of good things coming together: – – React that rocks and spring in Amsterdam that blossoms – – A full-day, two-track conference on all things React, gathering Front-end and Full-stack developers across the globe in the tech heart of Europe.
  • Mark your calendars for the biggest React community event.
  • Check out the the after-movie and mood videos from React Amsterdam 2017 edition: – – Check out our YouTube channel for more talk recordings of previous editions and meetups.

React Amsterdam is a full day two-track conference of all things React, gathering Front End developers across the globe in the tech heart of Europe.
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a collection of reusable low-level visualization components for #reactjs #d3js

a collection of reusable low-level visualization components for #reactjs 


  • vx is a collection of reusable low-level visualization components.
  • (y))], }); Compose together the scale and accessor functions to get point functions ( , ) ( ) ( (data)); (xScale, x); (yScale, y); Finally we’ll embed it all in an SVG ( ) { ( svg width {width} height {height} { .
  • (( , ) { yMax (d); ( Group key { } Bar x { (d)} y {yMax barHeight} height {barHeight} width { .
  • If you’re creating your own awesome chart library on top of vx, it’s easy to create a component api that hides d3 entirely.
  • This collection of components lets you easily build your own reusable visualization charts or library without having to learn d3.

react + d3 = vx | visualization components
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React + D3.js: Balancing Performance & Developer Experience

#ReactJS + D3.js: Balancing performance & developer experience  #JavaScript

  • The idea is still to use D3’s helpers and JSX to render SVG elements, except that now the elements rendered by React are rendered without attributes, and D3 is used to add their attributes.
  • Each of these methods can use typical D3 code to position, style, and transition elements.There are some caveats to this approach:As declared in the post introducing this idea, exit() transitions are not supported without bringing in React’s TransitionGroup.Since React does not keep track of attributes, we have to manually implement state comparison to detect when the component should update in order to call the update() method performing D3 transitions.
  • I believe this is due to the need to split the code according to the line of ownership between React and D3, instead of splitting it into logical units.Solution 3 — Feed D3 a fake DOM that renders to stateThis is the solution I found the most elegant so far, and it is what powers the demo at the beginning of this post.
  • That fake DOM is manipulated by D3 and then automatically rendered as React elements stored into the component’s state where React can pick up changes and kick-off an update, including lifecycle methods and reconciliation as you would expect.I found this approach elegant because both D3 and React are used without alienation.Except for feeding the faux DOM node to D3 instead of using a selector as you normally would, vanilla D3 code can be used.
  • Hence, you get to enjoy the typical render performance of React components.SVG elements are automatically transformed into React elements and are inspectable in the devtools.The implementation is compatible with server-side rendering, so you get isomorphic charts at no cost.Overall, this solution has restored my faith is having a great DX when using D3 visualizations in React components, while making the most out of React’s render performance.

Let’s put it out there, I love dashboards. I find the way they help you gain a rapid understanding out of complex information really interesting. I have written real-time data visualisations in the…
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Animating SVG Charts built with React and D3 by not important on CodePen

  • As the axes and line plot components receive new data, they also receive new scales based on this data.
  • Component { render () { const xScale = this.buildScale(/* …
  • Another critical ingredient in creating charts are the scales , which will handle fitting the line plot to the dimensions of the container.
  • {x1, x2}} className=”line-chart__axis-tick line-chart__axis-tick–vertical” y1={0} y2={0} /> {labelFn(tickValue)} ); }); } render () { const {scale, view, trbl, labelFn, tickValues, orientation} = this.props; let x1 = view[0]; if (orientation === VerticalAxis.orientation.RIGHT) { x1 = 0; } const x2 = x1; const transform = `translate(${trbl[3]}, ${trbl[0]})`; return (
  • Once the wrapped components are in place, the chart gains the new behavior of smoothly animating the line plot and axes to accommodate the new data.

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@56clindsey: “wrote a blog post about my method of #svg #charts #animation using #reactjs & #d3js via @CodePen #DataVisualization”

One possible approach to creating data visualization charts is to use React and D3, where React handles building all of the SVG and D3 does the calculations required. D3 has the capacity to create SVG elements and manipulate the DOM directly but it’s also a toolbox with just about everything needed to build charts in any way imaginable. For this blog post’s experiments, SVG and React were used but could have also been done using the Canvas element and Pixi.js, for example, thanks to D3’s flexibility.

Animating SVG Charts built with React and D3 by not important on CodePen

React D3 Library

A #JavaScript library that allows developers the ability to use D3 in #ReactJS.

  • We need to create a div element for D3 to build upon before converting it to a React component, var div = document.createElement(‘div’); and this div is what we will have D3 select.
  • A library that will allow developers the ability to reroute D3’s output to React’s virtual DOM. React-D3-Library will compile your code into React components, and it also comes with a series of D3 template charts converted to React components for developers who are unfamiliar with D3.
  • Not only do we build fully functional React components, but they utilize the power of D3 to automate scaling ranges, normalizing data, and constructing legends.
  • Use the componentDidMount() React lifecycle method to make the state aware of your new D3 div .
  • import React from ‘react’ ; import rd3 from ‘react-d3-library’ ;

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@wiwer77: “A #JavaScript library that allows developers the ability to use D3 in #ReactJS.”

All of your D3 will now be compiled into React Elements which allows the ability to use React’s diffing algorithm for full optimization

React D3 Library