Loading Data

100%

✓ Published0🌍 Public

Last edited Mar 20, 2023

Created on Mar 20, 2023

This example demonstrates a simple unidirectional data-flow pattern where the state is managed centrally and passed to a visualization function. The visualization renders the loaded data as a formatted JSON string inside a `<pre>` element, initially displaying a "LOADING" placeholder. Using the `csvParse` method from D3 v7, it fetches a CSV file from a GitHub gist containing NY State Assembly data, parses it, and updates the state to trigger a re-render. The code uses `select` and `join` to bind the data to the DOM, showing a clean separation between state management and rendering.

AI-generated description

A circle that follows the mouse using unidirectional data flow.

MIT Licensed

Similar vizzes

Loading thumbnail…

Loading Data

This example demonstrates how to load and parse a CSV file in D3.js, displaying the raw parsed data as a stringified JSON object in a `<pre>` element. The visualization uses a state management pattern with a `setState` function to handle asynchronous data loading, initially showing a "LOADING" placeholder. It fetches `data.csv`, parses it with `d3.csvParse`, and converts numeric columns to numbers before updating the display. The Iris flower dataset is used as the data source, with the rendering approach being a simple text-based output rather than a graphical chart.

IIshaChid76

83% match

Loading thumbnail…

loading_data_NH_2

This example demonstrates asynchronous data loading with D3 v7, displaying the contents of a CSV file as formatted JSON text in a pre element. It uses `fetch()` to retrieve `data.csv`, `csvParse` from D3 to convert the raw CSV string into an array of objects, and then iterates through the parsed data to coerce the numeric columns (`sepal_length`, `sepal_width`, `petal_length`, `petal_width`) from strings to numbers. The visualization implements a unidirectional data flow where a `setState` function updates the application state, triggering a re-render that initially shows "LOADING" before the fetched data appears.

NNavak94

82% match

Loading thumbnail…

Loading Data

This example demonstrates how to load and parse a CSV file in D3.js, displaying the Iris dataset as formatted JSON text in a `<pre>` element. The visualization initially shows a "LOADING" state, then fetches `data.csv` via the Fetch API and parses it using `d3.csvParse`. The code explicitly converts string measurements into numbers for all four numeric columns. State management is handled through a simple `setState` pattern, where the `viz` function checks whether data is loaded, triggers the asynchronous fetch, and re-renders once the parsed array of objects is available.

CCurran Kelleher

82% match

Loading thumbnail…

Loading data with React

This example shows how to load and summarize a CSV dataset using React state management. D3’s `csv` utility fetches the data, while React’s `useState` and `useEffect` hooks track the loading state and store the parsed result. The visualization displays a plain-text summary of the dataset, listing its size in kilobytes, row count, and column count, computed with `d3.csvFormat`. Before the data arrives, the interface shows a "Loading..." message. The data comes from a remote GitHub gist containing CSS named colors.

JJosoArenas

81% match

Loading thumbnail…

Loading Data with React & D3

This example demonstrates loading external data through the D3 utility `d3.csv`, which fetches a CSV file from a GitHub Gist and stores the result in React state via the `useState` and `useEffect` hooks. Once the data arrives, the app renders a `<pre>` element displaying summary statistics in the browser, including file size in kilobytes, row count, and column count. The visualization uses React for state management and D3 v5 for CSV parsing, with the output shown as plain text rather than a chart.

Sspace-captain96

81% match

Loading thumbnail…

Loading Data with React & D3

This example shows how React state and D3 utilities work together to load and summarize a CSV dataset. It displays the file size in kilobytes, the number of rows, and the number of columns inside a large <pre> element. The code uses React’s `useState` and `useEffect` hooks to fetch the CSV from a GitHub gist via `d3.csv`, then formats the result with `d3.csvFormat` and passes it to a custom message function. The visualization is minimal, focusing on data-loading mechanics rather than graphical output.

LLucyI

81% match

Loading thumbnail…

Loading Data with React & D3

This example demonstrates how to load external data in a React application using D3 utilities, displaying a summary of the dataset’s size, row count, and column count. The code uses the `useState` and `useEffect` hooks to manage data asynchronously, calling `d3.csv` to fetch a CSV file from a GitHub gist. Once loaded, the data is rendered as plain text in a `<pre>` element, with a “Loading…” placeholder shown until the fetch completes. The visualization highlights the integration of React’s state management with D3’s data-loading APIs.

JJohn Patrick Banas

81% match

Loading thumbnail…

Loading Data the React & D3

This example demonstrates how to load data with D3 utilities and manage it with React state. It fetches a CSV file from a GitHub gist using D3’s `d3.csv`, then displays a summary of the dataset via a React component. The summary shows the file size in kilobytes, the number of rows, and the number of columns, computed using `d3.csvFormat`. The visualization uses React’s `useState` and `useEffect` hooks to asynchronously load the data and update the display, rendering a plain-text message with a loading state initially.

Hhuashe418

81% match