Julia Hack

@jchack1·7 public vizzes

World map

This visualization presents a world map using an equal-area Earth projection, rendered as an SVG with React. It displays country boundaries in teal against a light gray sphere, with graticules and interior lines in a subtle gray. The code employs D3's `geoEqualEarth`, `geoPath`, and `geoGraticule` to project and draw geographic features from the `world-atlas` TopoJSON dataset, while `topojson`’s `feature` and `mesh` functions prepare the country and interior geometries.

Jan 17, 2022

Loading thumbnail…

Line chart - temp over time

A line chart plots temperature over time using D3 v5 scaleTime and scaleLinear scales in a React component. The SVG renders a smooth curve with d3.line and curveNatural, along with circular points for each observation. Data comes from a CSV of San Francisco weekly temperatures loaded via d3.csv. Custom AxisBottom and AxisLeft components generate tick marks and labels, while the chart includes rotated and positioned axis titles for Temperature and Time.

Jan 17, 2022

Loading thumbnail…

Temp over time

This example visualizes temperature readings over time as a scatterplot, with each data point marked by a green circle. The chart plots timestamps on the x-axis and temperature in Celsius on the y-axis, using D3's `scaleTime` and `scaleLinear` to map the data domain to pixel coordinates. React renders the SVG, with custom components for axes and tick marks, while D3's `csv` utility loads the data from a remote SF weekly temperature file. The x-axis labels are formatted as abbreviated weekday names via `timeFormat`.

Jan 17, 2022

Loading thumbnail…

Iris scatterplot

This scatterplot visualizes the Iris flower dataset, plotting sepal length against sepal width for individual specimens. The visualization uses React with SVG rendering, while D3 v5 utilities handle data loading via `d3.csv` and scale construction with `scaleLinear` and `extent`. The code explicitly defines axes through custom `AxisBottom` and `AxisLeft` components, with circular marks rendered by a `Ticks` component. Axis labels appear rotated on the y-axis, and CSS classes style the ticks, marks, and text throughout the chart.

Jan 17, 2022

Loading thumbnail…

UN population graph

This visualization displays the top 10 most populous countries using horizontal bars, ordered by country name with population shown on the x-axis in billions. The chart is built with React and D3 v5, using `scaleBand` for the categorical y-axis and `scaleLinear` with a maximum domain for the numeric x-axis. Data comes from the UN Population 2019 CSV, loaded via `d3.csv`, and rendered as SVG. Axis components and tick marks are generated from `d3.ticks`, formatted with `d3.format`, with tooltips showing exact values via SVG `<title>` elements.

Jan 16, 2022

Loading thumbnail…

Fork of Let's Make a Face Part I

This example shows an interactive SVG face that follows the mouse horizontally across a 960×500 canvas. A single circle, positioned at the center vertically, reacts to mouse movement by updating its x-coordinate in real time. Built with React’s `useState` hook and the D3 `arc` library, the app renders a minimal smiley-face precursor. The SVG’s `onMouseMove` handler triggers state updates, demonstrating a simple pattern for combining React’s declarative rendering with D3’s geometry utilities.

Nov 14, 2021

Loading thumbnail…

Fork of Hello HTML

This example displays a simple static SVG composition featuring two circles: a large yellow circle with a black outline and a smaller unfilled circle positioned to its left. The visualization is rendered using native SVG elements defined directly within the HTML file, with no external JavaScript libraries or data sources involved. The page uses inline styling to remove margins and hide overflow, while the SVG canvas is sized at 960 by 500 pixels, showing how basic geometric shapes can be assembled into a minimalist graphic.

Nov 14, 2021