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Chris North
Department of Computer Science, Virginia Tech
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VT CS 5764 Lecture Notes
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Sep 14, 2022
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VT CS 5764 Lecture Notes
Intro to Observable and JS
Intro to Observable and JS (solutions)D3 VisualizationD3 Visualization (solutions)Simple Axis DrawingD3 InteractionD3 Interaction (solutions)D3 NavigationD3 Navigation (solutions)D3 Graph LayoutD3 Graph Layout (solutions)
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d3 = require("d3")
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// Get the first 5 states
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// Which state is the wealthiest?

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// What is the total population of USA?

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// Extract populations

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// Find the population change from 2000 to 2010

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// add new column to table. extra parens are important

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// Which states are poor?

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// always sort a copy of the data
// need a comparison function

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// GroupBy, bin function

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// RollUp, aggregation function, bin function

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alphabet
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Purpose-built for displays of data

Observable is your go-to platform for exploring data and creating expressive data visualizations. Use reactive JavaScript notebooks for prototyping and a collaborative canvas for visual data exploration and dashboard creation.
Learn more