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“A — Life Expectancy (Loader)”

✓ Published0🌍 Public

Last edited Sep 16, 2025

Created on Sep 9, 2025

This example demonstrates a minimal data loader for global life expectancy data from Our World in Data (UN WPP 2024), using a subset of years from 2000 onward. The visualization shows the first five parsed rows in a simple HTML display, confirming that the CSV data has been loaded and formatted correctly. The code uses D3 v7’s `d3.csvParse` to convert raw text into objects with categorical, time, and quantitative attributes, and employs `d3.select` to manage the container. It serves as a foundation for future visualizations, with a clear separation between data loading and rendering logic.

AI-generated description

Dataset A — Global Life Expectancy (UN WPP via Our World in Data)

Source: Our World in Data – Life Expectancy (UN WPP 2024)
Link: https://ourworldindata.org/grapher/life-expectancy-unwpp

What it is: Country-by-year life expectancy derived from the UN World Population Prospects 2024 release.

Local data note: To stay under VizHub’s free 0.5 MB limit, this project uses a subset:

Years 2000 and newer
Renamed the life expectancy column to life_expectancy for simpler code

Columns & attribute types (VAD):

Entity — categorical (country/area name)
Code — categorical (ISO3)
Year — time (treated as integer year; ordered)
life_expectancy — quantitative (years; ratio)

Why this dataset: clean, real, and easy to scale later (filter by country, compare trends, etc.).

MIT Licensed

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