Perspective › Examples
Treemap - 2 Group By — Treemap with 2-level hierarchies for Category and Sub-Category. Size is Sales.
Treemap chart of Sales, grouped by Category, Sub-Category and Segment.

Data
Programmatic variations on the Superstore retail sales dataset, showing the flexibility of Perspective's configuration: the same table re-queried as data grids, pivot tables and charts by changing only the viewer's JSON config.
Loaded from /data/superstore.lz4.arrow as arrow into the perspective-server engine.
Configuration
This example is a saved <perspective-viewer> workspace. Pass this JSON to viewer.restoreWorkspace() to reproduce it over the same table:
{
"layout": {
"type": "tab-layout",
"tabs": [
"p0"
],
"selected": 0
},
"panels": {
"p0": {
"table": "",
"title": "Treemap - 2 Group By",
"plugin": "Treemap",
"group_by": [
"Category",
"Sub-Category",
"Segment"
],
"columns": [
"Sales"
],
"theme": null
}
},
"active": "p0"
}
About Perspective
Perspective is an open-source, WebAssembly-powered data grid, pivot table and charting component for large, real-time and streaming datasets — in the browser, Python, Jupyter, Node.js and Rust.
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