Loading data with React & D3

Loading data with React and D3

This example demonstrates how to load and display a CSV dataset in a React application, showing a text summary of the data size, row count, and column count once the file is fetched. The code uses React’s `useState` and `useEffect` hooks to manage the asynchronous loading state, while D3’s `d3.csv` fetches the data from a GitHub gist URL and `d3.csvFormat` converts it back to a string to calculate its size in kilobytes. The visualization initially displays “Loading…” and updates to the summary once the data arrives.

AAlex Stulov

Loading Data with React & D3

This example demonstrates how to combine React state and D3’s data-loading utilities in a simple data summary application. The component fetches a CSV file from a GitHub gist using the `csv` method from d3.v5, storing the parsed result in React’s `useState` hook. While the data is pending, the interface displays “loading”; once resolved, it computes and presents the file size in kilobytes, row count, and column count via `d3.csvFormat` and the data’s `columns` array. The implementation uses `useEffect` and `useCallback` for lifecycle management, with ReactDOM rendering the final message as large, styled text.

AAnthony Zornig

Loading data with React and d3

This example demonstrates how React and d3 can work together to load and display a CSV dataset, showing the file size, row count, and column count as plain text. The React component uses the `useState` and `useEffect` hooks to manage loading state and fetch data once on mount via `d3.csv`, while `d3.csvFormat` calculates the data size. The message updates from "Loading..." to the summary once the data from the GitHub-hosted CSV file arrives. It uses React 16 and d3 v7, with ReactDOM rendering the result into the page.

RRajaeKrib

Loading data with React and D3

This example demonstrates the loading of a CSV dataset within a React application, displaying a summary message that reports the file size in kilobytes, row count, and column count. The interface initially shows a loading state and updates once the data is fetched. The code combines React’s `useState` and `useEffect` hooks with the `d3.csv` function from D3 v7, and uses `d3.csvFormat` within the message utility to compute data size. The visualization renders as an SVG container, though the output is text-based.

Mmbooch22

Loading data with React and D3

This example demonstrates how to load and summarize CSV data within a React application using D3. The interface displays the number of rows, columns, and file size in kilobytes once the data has been fetched. It uses React’s `useState` and `useEffect` hooks to manage asynchronous loading, while the `d3.csv` function retrieves the dataset from a GitHub gist. The code also calls `d3.csvFormat` to calculate the raw data size, with a simple loading message shown before the fetch completes.

Nnahsiloh

Loading Data with React & D3

This example demonstrates how to load external CSV data in a React component using D3, displaying the dataset’s size, row count, and column count as formatted text. The code uses React hooks (`useState`, `useEffect`) to fetch the data via `d3.csv` from a GitHub gist URL, storing the parsed result in state. Once loaded, the `message` function formats the summary using `csvFormat`, showing the file size in kilobytes, the number of rows (entries), and the number of columns from the parsed data’s `.columns` property. Before data arrives, the UI shows a “Loading...” placeholder, set against a full-screen preformatted text layout.

KK3zter

Loading Data with React & D3

This example demonstrates how to load and summarize a CSV dataset within a React application, displaying the data’s size, row count, and column count as text. It uses D3’s `csv` function to fetch data from a remote GitHub gist, while React’s `useState` and `useEffect` hooks manage the loading state and trigger the asynchronous request. The rendered output updates from a “Loading...” message to the computed statistics once the data arrives, with the message formatted using `d3.csvFormat` and JavaScript string concatenation.

NNaoto Nishimura

Loading Data with React & D3

This example demonstrates how to load external CSV data into a React application using D3’s `csv` method, then display a summary of the dataset’s size and structure. The React `useEffect` hook fetches the CSV from a GitHub gist, storing the parsed data in state via `useState`. Once loaded, the `message` function formats the output using `d3.csvFormat` to calculate file size in kilobytes, alongside row and column counts. The interface shows the text summary inside an HTML `<pre>` element, with a simple “loading” placeholder before data arrives.

Ppsabela