Mister Super Nester

Mister Nester

Mister Nester is an interactive console for learning and experimenting with d3.js data nesting. It presents sample data from California counties—including FIPS codes, population, and Hispanic percentage across census years—and lets users convert between flat data and nested JSON structures. The interface displays input text, editable nesting code, and the resulting output side-by-side, with syntax highlighting via highlight.js. Users modify the d3.nest() code in the middle panel and click a button to see the transformed output.

SSigfried

83% match

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Mister Nester

Mister Nester is an interactive console for learning and experimenting with data nesting in d3.js. The interface presents a text area where tabular data—such as county-level population and Hispanic percentage by year—can be pasted, and a preview pane displays the nested structure generated from it. The visualization updates in real time as the input is edited, using the d3.v3 library to parse and reorganize the data into a hierarchical format. Users can select from sample datasets and trigger the nesting process via a button, making the tool a practical playground for understanding how d3 handles nested data relationships.

TThanaporn-sk

81% match

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Mister Nester

Mister Nester is an interactive console for learning and experimenting with data nesting in d3.js. The interface presents a text area where tabular data—such as county-level population and Hispanic percentage by year—can be pasted, and a preview pane displays the nested structure generated from it. The visualization updates in real time as the input is edited, using the d3.v3 library to parse and reorganize the data into a hierarchical format. Users can select from sample datasets and trigger the nesting process via a button, making the tool a practical playground for understanding how d3 handles nested data relationships.

TThanaporn-sk

81% match

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Mister Nester

Mister Nester is an interactive console for learning and experimenting with data nesting in d3.js. The interface presents a text area where tabular data—such as county-level population and Hispanic percentage by year—can be pasted, and a preview pane displays the nested structure generated from it. The visualization updates in real time as the input is edited, using the d3.v3 library to parse and reorganize the data into a hierarchical format. Users can select from sample datasets and trigger the nesting process via a button, making the tool a practical playground for understanding how d3 handles nested data relationships.

TThanaporn-sk

81% match

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un-nest

This example demonstrates a data transformation workflow using D3.js. It loads tabular data containing FIPS codes, population totals, and Hispanic population percentages for multiple census years, then nests the records by year. A custom function unnests the data, flattening the hierarchical structure back into individual records while preserving the parent year key. The code uses D3's `d3.select`, `d3.tsv`, and `d3.nest` APIs to handle SVG rendering, file parsing, and data grouping, with the unnested result logged to the console.

SSpaceActuary

72% match

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rollup-nestby

The visualization demonstrates nested data aggregation by grouping and rolling up values across multiple categorical levels. It uses `d3.nest()` with `.key()` and `.rollup()` functions to transform raw data into a hierarchical structure, which is then rendered as a treemap layout. The color scale applies sequential chromatic interpolation from `d3-scale-chromatic` to encode aggregated values. A custom D3 build bundles modules including `d3-jetpack` utilities, with the visualization rendered as a static treemap using `d3.hierarchy()` and `d3.treemap()`. The example shows how nested hierarchies can be computed and displayed through layered grouping operations.

11wheel

71% match

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D3 nest examples

A collection of interactive tutorial examples demonstrates how to use the d3.nest() function to group, roll up, and sort tabular CSV data containing task management records. The page shows progressively more complex nesting operations, from single-key grouping by status to two-level hierarchies with custom sort orders and leaf-level sorting, while also demonstrating how rollup can compute counts and sums. Each example displays the JavaScript code alongside the resulting nested data structure in text areas.

GGerHobbelt

70% match

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Untitled

This interactive treemap visualizes a hierarchical dataset with nested rectangles sized by a primary numeric measure and colored by a secondary metric. Users can hover over nodes to see tooltips with additional data, while clicking parent and grandparent rectangles zooms into deeper levels of the hierarchy. Built with D3 v4, the implementation uses `d3.hierarchy`, `d3.treemap`, and `d3.nest` to aggregate data, with SVG rendering and smooth transitions between zoom states. The hover effects and tooltip functionality are implemented with CSS and JavaScript event handlers.

GGuillamon

70% match