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React Native and D3JS hswolff @hswolff

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Harry Wolff Senior UI Engineer @ MongoDB.com Blog @ hswolff.com Twitter @ hswolff GitHub @ hswolff

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What do I know about React Native?

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Chartbeat iOS http://blog.chartbeat.com/2016/04/07/say-hello-to-the-all-new-chartbeat-ios-app/

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What is React Native?

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A framework for building native apps with React

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“React Native lets you build mobile apps using only JavaScript. It uses the same design as React, letting you compose a rich mobile UI from declarative components.” https://facebook.github.io/react-native/

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https://facebook.github.io/react-native/

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What is D3JS?

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“a JavaScript library for manipulating documents based on data” https://d3js.org/

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“D3 helps you bring data to life using HTML, SVG, and CSS.” https://d3js.org/

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https://d3js.org/

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D3 4.0 Now Modular

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d3-scale https://github.com/d3/d3-scale “Continuous scales map a continuous, quantitative input domain to a continuous output range.” Continuous Scales “Given a value from the domain, returns the corresponding value from the range.”

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d3-scale https://github.com/d3/d3-scale

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d3-scale https://github.com/d3/d3-scale “Time scales are a variant of linear scales that have a temporal domain: domain values are coerced to dates rather than numbers" Time Scales

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d3-scale https://github.com/d3/d3-scale

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d3-shape https://github.com/d3/d3-shape

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d3-shape https://github.com/d3/d3-shape “line generator can then be used to compute the d attribute of an SVG path element”

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SVG https://developer.mozilla.org/en-US/docs/Web/SVG/ Tutorial/Paths “Paths create complex shapes by combining multiple straight lines or curved lines” “The shape of a path element is defined by one attribute: d.”

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d3-shape https://github.com/d3/d3-shape

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d3-scale https://github.com/d3/d3-shape

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How does D3JS work with React Native?

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ART https://github.com/sebmarkbage/art “ART is a retained mode vector drawing API”

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ART https://github.com/sebmarkbage/art

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ART https://github.com/sebmarkbage/art

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React ART https://github.com/reactjs/react-art “React ART is a JavaScript library for drawing vector graphics using React.” “It provides declarative and reactive bindings to the ART library.”

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React ART https://github.com/reactjs/react-art

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React Native ART https://github.com/facebook/react-native/tree/master/

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What are we making?

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Open Sourced https://github.com/hswolff/ BetterWeather

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Let’s Build

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Link ART https://facebook.github.io/react-native/docs/linking- libraries-ios.html#manual-linking

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WeatherPage.js

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WeatherPage.js

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WeatherGraph.js

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WeatherGraph.js

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WeatherGraph.js

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WeatherGraph.js

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WeatherGraph.js

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WeatherGraph.js

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WeatherGraph.js

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WeatherGraph.js

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https://developer.forecast.io/

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WeatherGraph.js

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WeatherGraph.js

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graph-utils.js

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graph-utils.js

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graph-utils.js

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graph-utils.js

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graph-utils.js

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graph-utils.js

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graph-utils.js

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graph-utils.js

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graph-utils.js

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WeatherGraph.js

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WeatherGraph.js

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WeatherGraph.js

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WeatherGraph.js

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WeatherGraph.js

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Let’s Animate

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WeatherGraph.js WeatherPage.js

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WeatherPage.js WeatherGraph.js

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WeatherGraph.js WeatherPage.js

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WeatherGraph.js WeatherPage.js

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WeatherGraph.js WeatherPage.js

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WeatherGraph.js WeatherPage.js

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WeatherGraph.js WeatherPage.js

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WeatherGraph.js WeatherPage.js

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WeatherGraph.js WeatherPage.js

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WeatherGraph.js

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WeatherGraph.js

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React Native and D3JS hswolff @hswolff https://speakerdeck.com/hswolff/react-native-and-d3js