| | Hex is an AI analytics platform where analysts do deep technical work, business users self-serve in plain language, and every answer is grounded in the same shared context. Data Elixir readers get 30 days free.
*Message from this week's sponsor, Hex Technologies |
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| | 🔗 Note: if you don’t see links in this email, it’s also available on the web: dataelixir.com/archive/issue-581.html |
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| | The data stack has become a maze of warehouses, lakes, query engines, transformation tools, and orchestrators. This guide maps the landscape, explains what each layer does, and shows how the pieces fit together. It’s written for developers, but there’s a lot of value here for anyone who works with data.
Oleg Wock |
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| | The critics of LLMs are right about a lot of things. Jeremy Theocharis uses them anyway. This thoughtful post explains why, with practical ideas for keeping humans responsible for the framing, judgment, and final decisions.
Jeremy Theocharis |
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| | Chord diagrams can be used to show flows and relationships between groups in a single circular chart. In this tutorial, Nicola Rennie introduces ggchord2, a new R package that makes them feel more like ordinary ggplot2 charts, then explores how the same data looks in a Sankey diagram.
Nicola Rennie |
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| | | | Data science gets strange in high dimensions. Geometry behaves unexpectedly, familiar intuition starts to break down, and effects that look like curses can sometimes become useful. This free ~500 page textbook begins there, then builds toward PCA, regression, clustering, classification, compressed sensing, and other mathematical foundations.
Afonso S. Bandeira, Amit Singer, Thomas Strohmer |
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| | Most tutorials show you exactly what to do. These analysis journeys start with the raw data and a target result, then let you work out the path yourself. Hints and solutions are there when you need them, making this a useful way to practice real R analysis.
James Bartlett, Wilhelmiina Toivo |
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| | | GeoSQL gives coding agents a better way to work with spatial data. It can inspect schemas, write geospatial SQL, check query costs, validate geometries, and render maps so the agent can spot mistakes that wouldn’t show up in a table.
GitHub | dekart-xyz |
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| | SQLite’s query planner can tell you a lot about performance, but its output can be hard to interpret. This tool turns it into plain English so you can understand where a query may be inefficient and what SQLite is actually doing.
Simon Willison |
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| | | These animated match portraits rebuild every World Cup game from event data, turning momentum, territory, shots, and goals into a shifting visual landscape. Click the match thumbnails to watch each game unfold.
Alexander Bogachev |
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