Edwin Cini

@wolfchild·4 public vizzes

Making a Bar Chart

This example displays the populations of the ten most populous countries, drawn as horizontal bars scaled linearly along the x-axis and categorically along the y-axis. The chart is rendered as an SVG using the d3 library, with scales created by `scaleLinear` and `scaleBand`, and axes drawn using `axisLeft` and `axisBottom`. Data is loaded from a CSV file via d3's `csv` function, with population values multiplied by 1,000 for display.

Mar 13, 2021

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Let's make a face with D3.js!

A friendly cartoon face is assembled from basic SVG shapes, with animated eyebrows that rise and fall. The example demonstrates reusable geometric primitives and declarative transitions in D3 v6. It uses `d3.select` and `d3.arc` to construct the mouth, while circles and rectangles define eyes and brows. The `transition().duration()` chain animates the eyebrow group’s transform attribute over two sequential two-second phases. Rendering targets an SVG canvas, with styles and layout handled by CSS.

Mar 7, 2021

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Shapes with SVG and CSS

This example shows how SVG shapes—circles, rectangles, lines, and paths—can be directly styled and grouped using inline attributes and CSS classes. The code uses raw SVG elements within an HTML page, applying fill colors, strokes, and transforms like `scale` and `translate` via React’s rendering capabilities. CSS rules in `styles.css` control stroke width, color, and line joins for grouped elements, demonstrating how presentation can be separated from structure. The visualization relies purely on static markup, with no JavaScript or data-driven logic beyond the SVG’s native coordinate system.

Mar 7, 2021

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Cars Report

This example demonstrates a text-based report of used cars, filtering entries under $2,000 and formatting each line with year, make, model, and price. The page initially shows “loading...” and then displays the car list after a simulated async delay. Code uses JavaScript modules with `import`/`export`, a `Promise` with `setTimeout` in `getCars`, and array methods like `filter`, `map`, and `join` to generate the output. Data comes from an embedded JSON string parsed with `JSON.parse`.

Mar 7, 2021