# observablehq.com > AI-optimized mirror of observablehq.com containing 50 pages totalling 182,370 words of clean markdown content, structured data, and semantic HTML. Original source: https://observablehq.com/. Last updated: 2026-06-13T22:44:33.188Z. Each page is available as HTML (with JSON-LD structured data) and Markdown (text-only, ideal for LLMs and RAG). ## Homepage - [Observable Notebooks 2.0 is here!](/content/site-root.html): Quickly explore and analyze data, build prototype data visualizations, and collaborate with your team in real-time with live JavaScript notebooks. (1,052 words) ## Articles & Blog Posts - [Observable documentation](/content/documentation/index.html): Everything you need to build the best data apps. (162 words) - [learn/glossary/index.html](/content/learn/glossary/index.html) (1 words) - [ambassadors/index.html](/content/ambassadors/index.html) (1 words) - [Customer stories](/content/customer-stories/index.html): Learn how leading data teams explore data and build visualizations on Observable. (458 words) - [The future of data analysis is Observable](/content/about/index.html): Learn more about our mission to help everyone make sense of the world and visualize data, together. (772 words) - [plot/api/index.html](/content/plot/api/index.html) (1 words) - [jimr1603/uk-cpih-inflation-calculator/index.html](/content/jimr1603/uk-cpih-inflation-calculator/index.html) (1 words) - [tudelft/kraijenhoff-was-here/index.html](/content/tudelft/kraijenhoff-was-here/index.html) (1 words) - [jiajuma/the-moma-collection-data-explorations/index.html](/content/jiajuma/the-moma-collection-data-explorations/index.html) (1 words) - [Integration Test Flakiness](/content/observablehq/integration-test-flakiness/index.html) (1,200 words) - [Introduction to Vega-Lite](/content/uwdata/introduction-to-vega-lite/index.html) (2,652 words) - [TTT : Visualizing W. Tobler's "first law of geography" ? - Spatial autocorrelation](/content/ljegou/spatial_autocorrelation/index.html) (2,590 words) - [Introducing sqlite-vss: A SQLite Extension for Vector Search](/content/asg017/introducing-sqlite-vss/index.html): Blog posts covering several new extensions, tools, and guides for the SQLite ecosystem, for faster and simpler data processing! (2,366 words) - [Webcam 1: MoveNet AI Powered 3D Human Pose Tracking and Analysis](/content/mt-cs/movenet-3d-pose-tracking-webcam-1/index.html) (1,053 words) - [What is a grid cartogram?](/content/blog/what-is-a-grid-cartogram/index.html): Grid cartograms are thematic maps that represent spatial regions with simplified geometric shapes like squares or hexagons. In this overview, we introduce grid cartograms, highlight pros and cons of this chart type, describe common alternatives, and share resources that can help you start building them with Observable. (1,168 words) - [Visualizing Stock Market Data with Google Trends](/content/nickamiller/visualizing-stock-market-data-with-google-trends/index.html) (957 words) - [Animated Mapbox Vector Fields (aka Wind Maps)](/content/cguastini/animated-mapbox-vector-fields-aka-wind-maps/index.html) (1,934 words) - [Data Curation Workflow](/content/mdeagen/data-curation-workflow/index.html) (1,024 words) - [McMullen carpets](/content/mcmcclur/mcmullen-carpets/index.html) (970 words) - [What is "No Use of Color Alone" in Data Visualization? (with examples)](/content/frankelavsky/no-use-of-color-alone-in-data-visualization/index.html) (1,895 words) - [MotoGP results database](/content/piratus/motogp-results-database/index.html) (229 words) - [Getting started](/content/plot/getting-started/index.html): The JavaScript library for exploratory data visualization (1,245 words) - [Sobel Operator](/content/mbostock/sobel-operator/index.html) (2,258 words) - [Sankey diagram component](/content/d3/sankey-component/index.html) (1,876 words) - [It’s never okay to crop the y-axis, except when it is](/content/blog/never-okay-crop-y-axis-except-when-it-is/index.html): A common rule of creating charts says to never cut off the y-axis for bar charts, but that it can start at any point for line charts. Research shows that cropping the y-axis leads to confusion, even with line charts. There is a useful rule of thumb that helps make this choice, though. (1,169 words) - [Refine the question](/content/blog/feed-rss.html) (123,593 words) - [Truncated-octahedron-based 3D-space-filling curve](/content/bhearn/truncated-octahedron-based-3d-space-filling-curve/index.html) (657 words) - [Decode ADS-B and Mode S messages with `rs1090`](/content/openaviation/rs1090/index.html) (1,587 words) - [xG map](/content/probberechts/xg-map/index.html) (432 words) - [LMSys Chatbot Arena leaderboard history](/content/llms/lmsys-chatbot-arena-leader-over-time/index.html) (166 words) - [Dorling cartogram of the Spanish Presidential election](/content/adrianblanco/dorling-cartogram-of-the-spanish-presidential-election.html) (1,192 words) - [Periodic Planar Three-Body Orbits](/content/rreusser/periodic-planar-three-body-orbits/index.html) (2,292 words) - [SQL Practice - Baby Names](/content/a-lexwein/sql-practice-baby-names/index.html) (1,232 words) - [plashal llc.](/content/plashal/index.html) (95 words) - [Runge Kutta visualized](/content/pcarleton/runge-kutta-visualized/index.html) (691 words) - [Jason P'ng](/content/jpngfile/index.html) (28 words) - [The best dashboards are built with code.](/content/framework/index.html) (213 words) - [3D Hilbert curves](/content/mourner/3d-hilbert-curves/index.html) (565 words) - [PM2.5 to AQI Conversion](/content/mbostock/pm25-to-aqi/index.html) (704 words) - [Report Data Base](/content/embed/14dec7fa6664410a-369/index.html) (206 words) - [Observable blog](/content/blog/index.html): Level up how you explore and analyze data, build visualizations, and share insights with these tips and resources from data visualization experts. (207 words) - [Animated treemap](/content/d3/animated-treemap/index.html) (931 words) - [Fetch an Excel sheet](/content/neocartocnrs/fetch-an-excel-sheet/index.html) (262 words) - [Iat355-Project-Data-Selection](/content/mark-soh/index.html) (15 words) - [Observable Plot The JavaScript library for exploratory data visualization](/content/plot/index.html): The JavaScript library for exploratory data visualization (235 words) - [Boggs Eumorphic](/content/d3/boggs-eumorphic/index.html) (54 words) - [HinKiuWongProjectDataSelection](/content/iat-355-workspace/hinkiuwonga3/index.html) (3,466 words) - [Climate Matters: 2026 Spring Package](/content/climatecentral/2026-spring-package/index.html) (595 words) - [Census 2021 Explorer](/content/jwolondon/census-2021-explorer/index.html) (15,916 words) ## Resources - [Full Page Index](/index.html): Browse all cached pages with rich metadata - [About This Cache](/content/about.html): Methodology, technical details, and usage guidelines - [XML Sitemap](/sitemap.xml): Machine-readable sitemap for crawler discovery - [Robots.txt](/robots.txt): Crawler directives