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Loading Data

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BBismark Kofi Owusu Sarfo
Last edited Sep 3, 2025
Created on Sep 3, 2025

This example demonstrates a loading and state-management workflow for a D3.js scatter plot using the Iris flower dataset. When the page opens, the visualization displays a “Loading…” message while fetching data from a CSV file via `d3.csv`. Once the data arrives, it renders circles mapping sepal length and sepal width, with axes and labels drawn using `d3.axisBottom` and `d3.axisLeft`. The code relies on D3’s `select` and `join` APIs to manage SVG elements across state transitions, handling loading, error, and data-ready states.

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