mariamy

@mariamy·2 public vizzes

Let's make a face with D3.js!

A D3.js bar chart visualizes population data from a CSV file, with each country represented by a rectangle. The example demonstrates fundamental DOM manipulation by loading data with `d3.csv`, scaling values with `d3.scaleLinear` and `d3.scaleBand`, and appending SVG `rect` elements. The chart renders horizontally, with bar widths proportional to population values. The code also includes a separate, commented-out smiley face example, but the active visualization focuses solely on the bar chart, displaying five countries with varying population sizes.

Sep 18, 2019

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Let's make a face with D3.js!

This example illustrates fundamental DOM manipulation with D3.js by building a smiley face from SVG primitives. A yellow circle forms the head, with two eye circles, a mouth path created using the `arc` generator, and rectangular eyebrows. The animation uses chained `transition()` calls to animate the eyebrow group's `transform` attribute upward and then back down over two seconds each, creating a simple moving expression. The code relies on `svg.append`, `.attr`, and D3's selection and transition APIs, rendering entirely through SVG without external data.

Sep 18, 2019