Observable Reviews and details

Social recommendations and mentions

• More Itertools

  You can implement most of itertools in Javascript, though making it perform well is another story. For instance, https://observablehq.com/@jrus/itertools. - Source: Hacker News / about 17 hours ago

• Modos Paper Monitor Pre-Launch on Crowd Supply

  Curious to see whether more recent dithering approaches would produce better results. They don't even have to be more resource hungry than the classic Bayer or Floyd-Steinberg dithers! Interleaved Gradient Noise[0][1][2] comes to mind as an alternative to Bayer, and it can even be approximated quite well with just 8-bit operations! Basically, use the following function to determine your threshold based on pixel... - Source: Hacker News / 7 days ago

• I'm writing a new vector search SQLite Extension

  Could this be implemented in Rust? Does that project (sqlite-loadable-rs) support WASM? https://observablehq.com/@asg017/introducing-sqlite-loadable-rs. - Source: Hacker News / 25 days ago

• Show HN: An extension to track your Wikipedia adventures

  Have you tried out a tangled-tree visualization? [1] I've found it to be super useful when visualizing these sorts of relationships in a compact way. [1] https://observablehq.com/@nitaku/tangled-tree-visualization-ii. - Source: Hacker News / 26 days ago

• A feature-rich front-end drag-and-drop component library

  Maybe I'm easy to impress, but I always stop and play around with the nested tree example when I come across Sortable. It works so flawlessly, and feels very tuned to mobile dnd. It even works to arrange (and reflow) inline spans in a paragraph! I have yet to come across this functionality in a text editor.. [0]: https://observablehq.com/@dleeftink/sortable-playground. - Source: Hacker News / about 1 month ago

• Parquet-WASM: Rust-based WebAssembly bindings to read and write Parquet data

  Arrow JS is just ArrayBuffers underneath. You do want to amortize some operations to avoid unnecessary conversions. I.e. Arrow JS stores strings as UTF-8, but native JS strings are UTF-16 I believe. Arrow is especially powerful across the WASM <--> JS boundary! In fact, I wrote a library to interpret Arrow from Wasm memory into JS without any copies [0]. (Motivating blog post [1]) [0]:... - Source: Hacker News / about 1 month ago

• A flat map with the least error possible: The Gott-Goldberg-Vanderbei projection

  Here’s the D3 implementation (which is just an interrupted azimuthal equidistant projection): https://observablehq.com/@d3/azimuthal-equidistant-hemispheres. - Source: Hacker News / about 1 month ago

• Hardest Problem in Computer Science: Centering Things

  I made a quick tool to apply the trick he suggests at the end of the article: https://observablehq.com/@gampleman/font-centering-tool. - Source: Hacker News / about 1 month ago

• Zooming User Interface (ZUI)

  There is maybe some room for design too (Figma), but there are many times I wish it DIDN'T do that and encouraged better frame/file organization instead. ------- It can also be useful for some visualizations, like taxonomy: https://itol.embl.de/itol.cgi or https://www.onezoom.org/life.html "Drill down for details" like in disk space analysis: https://www.youtube.com/watch?v=BKClylmlv3w&t=1s (or similar one in D3:... - Source: Hacker News / about 1 month ago

• Transformers.js: Machine Learning for the Web

  This library is so cool. It makes spinning up a quick demo incredibly easy - I've used it in Observable notebooks a few times: - https://observablehq.com/@simonw/openai-clip-in-a-browser - https://observablehq.com/@simonw/detect-objects-in-images The size of the models feels limiting at first, but for quite a few applications telling a user with a good laptop and connection that they have to wait 30s for it to... - Source: Hacker News / about 2 months ago

• Tonal.js: Functional music theory lib

  Thanks for posting this! I've been experimenting with adding generative ambient music to my white noise app Ambiphone [0] using tone.js, but I've just been using manually written progressions and motifs, so I'm really excited to try this out. Just a heads up that your example at https://observablehq.com/@ricardomatias/playa doesn't seem to be working at the moment because of browser autoplay restrictions - the... - Source: Hacker News / about 2 months ago

• Zoomable Circles, a Svelte component for hierarchical data

  (1) Check out the underlying D3 example of zoomable circles - https://observablehq.com/@d3/zoomable-circle-packing?intent=fork (2) Explore D3.js demos - I show potential clients this demo page frequently, and it never ceases to blow minds and start interesting conversations! Enjoy. - Source: Hacker News / about 2 months ago

• Deep Learning in JavaScript

  Not a problem, I've benchmarked some GPU backed js libraries here: [0]: https://observablehq.com/@dleeftink/ultimate-compute-show-down. - Source: Hacker News / 2 months ago

• Show HN: I built an interactive plotter art exhibit for SIGGRAPH

  Yeah that’s a great idea. I’ve got a bunch of plotter seeds on observablehq with sliders to control different parameters. For example: https://observablehq.com/@josephg/simple-sin-waves-plot I’ve never thought of using a midi controller to noodle with them. That’s a great idea! - Source: Hacker News / 2 months ago

• Show HN: Mapping almost every law, regulation and case in Australia

  I did something similar for fragrances a little while ago: https://observablehq.com/@55th/every-fragrance-at-once. - Source: Hacker News / 2 months ago

• Chronos: Learning the Language of Time Series

  - Level: where are the data points on the vertical axis? What libraries, AI, databases, etc... Would you recommend that would allow me to calculate these values? I am no data scientist and don't need forecasting but overall, I just want a dashboard that shows the most "important" graphs. [1] https://observablehq.com/framework/ [2] https://observablehq.com/framework/loaders [3]... - Source: Hacker News / 2 months ago

• Suspicious Discontinuities

  Similar to car prices, we see the same mental rounding effect in rents. People will rent a home for $2100 or $2200, sometimes even $2150 for those truly dedicated to price finding, but hardly anyone rents an apartment for $2137. Source: my data for the city of Berkeley https://observablehq.com/@jwb/berkeley-rent-board-data#cell-454. - Source: Hacker News / 2 months ago

• Ask HN: How do you analyze time series data in 2024?

  What libraries, AI, databases, etc... Exist that would allow me to calculate these values? Overall, I don't need forecasting and just need a dashboard that shows the most important graphs. [1] https://observablehq.com/framework/ [2] https://observablehq.com/framework/loaders [3] https://observablehq.com/@observablehq/plot-simple-line-chart. - Source: Hacker News / 2 months ago

• Interesting Ideas in Observable Framework

  Some community members have made available resources for converting Observable flavoured JS to vanilla (it mostly involves rewriting top-level cell definitions): [0]: https://observablehq.com/@bumbeishvili/convert-observable-code-to-normal-javascript. - Source: Hacker News / 3 months ago

• Interesting Ideas in Observable Framework

  Observable integrates really well with ClickHouse using its REST API, like in this example: https://observablehq.com/@stas-sl/github-issues-survival-analysis But I didn't try the new Observable Framework - interesting to see similar examples where it queries a database live. I hope that preloading and caching all the data is not the only option because these types of apps should be interactive. Ideally, it should... - Source: Hacker News / 3 months ago

• Interesting Ideas in Observable Framework

  My issue with Observable is that it appears to be the examples-resource for d3 [0], but you can't just copy-paste the code because it is designed to run in that framework. And it's not like d3 is easy to use so that you can use it without examples, specially considering that changes between versions are often incompatible. But apart from this, there's a lot of incredible graphics to find on the site. [0]... - Source: Hacker News / 3 months ago