Observable Reviews and details

Social recommendations and mentions

• All you need is Wide Events, not "Metrics, Logs and Traces"

  FWIW I think x-ray has everything you need, its just that AWs tooling does not give you much ability to aggregate over x-ray bundles. I wrote a tool to help bulk load x-ray samples into a local browser duckdb and then slice and dicing in realtime interactive visualisations. It also includes the ability to generate a flamegraph over the selected traces. All this great data is already in an AWS, account and we just... - Source: Hacker News / about 16 hours ago

• Minimum Volume Ellipsoid

  If you find this interesting, you might enjoy my write up of the Matoušek-Sharir-Welzl (MSW) algorithm used by D3’s circle-packing layout. https://observablehq.com/@d3/d3-packenclose I still haven’t quite figured out how to make D3’s implementation robust, though. Volodymyr Agafonkin’s robust-predicated would probably help…. - Source: Hacker News / 6 days ago

• Observable 2.0, a static site generator for data apps

  3. Select an example I like, for example - https://observablehq.com/d/3ea4b4458fed9242?page=2&collection=@observablehq/featured-creators It turns out it's D3, not Plot. I think you just have all possible viz in this section, but for me as a user coming from the Observable Plot page and clicking on "See more..." my expectation is to see only examples of what could be done with Plot, not both D3 and Plot. I need to... - Source: Hacker News / 13 days ago

• Observable 2.0, a static site generator for data apps

  Https://observablehq.com/plot/marks/cell We generally recommend stacked bar charts over pie and donut charts, so we haven’t prioritized those. But you can already implement them using custom marks, and there’s even a hacky way of doing them using Plot’s map projection system. https://observablehq.com/@observablehq/pie-to-donut-chart I don’t understand your comment about the “D3 example.” If you’re looking for Plot... - Source: Hacker News / 13 days ago

• A list of SaaS, PaaS and IaaS offerings that have free tiers of interest to devops and infradev

  Observable — a place to create, collaborate, and learn with data. Free: Unlimited notebooks, Unlimited publishing, Five editors per notebook. - Source: dev.to / 22 days ago

• Show HN: Atopile – Design circuit boards with code

  It should produce a schematic as one of its output products.. Maybe use graphviz, see: https://observablehq.com/@nturley/netlistsvg-how-to-draw-a-better-schematic-than-graphviz HDL tools all do this. - Source: Hacker News / 23 days ago

• Show HN: Marimo – an open-source reactive notebook for Python

  I primarily use Observable to build interactive tools, as opposed to Jupyter which I use more for exploratory development and analysis. Here are some of my Observable notebooks which illustrate the kind of things I use it for: https://observablehq.com/@simonw/search-for-faucets-with-clip-api https://observablehq.com/@simonw/openai-clip-in-a-browser Those are both from... - Source: Hacker News / about 2 months ago

• Show HN: Marimo – an open-source reactive notebook for Python

  This is amazing. I'm a big user of both Jupyter notebooks and Observable notebooks (https://observablehq.com/) and the thing I miss most from Observable when I'm using Jupyter is the lack of cell reactivity. You've solved that incredibly well! I also really like that the Marimo file format is just Python. Here's an example saved file from playing around with the intro:... - Source: Hacker News / about 2 months ago

• Sieve is simpler than LRU

  Https://observablehq.com/@1a1a11a/sieve-miss-ratio-plots I haven't had time to add other algorithms to the plot, but they are often similar to or worse than TinyLFU (I did not pick TinyLFU to compare deliberately; I happen to have the figures on hand). - Source: Hacker News / about 2 months ago

• Apple II Emulation Evaluation (2022)

  I've ported the GPU code that OpenEmulator uses to WebGL. You can view a demo here: https://zellyn.com/apple2shader/ (source is on github). I also ported it to Javascript, in an Observable notebook, with some attempt at explaining what was going on, here: https://observablehq.com/@zellyn/apple-ii-ntsc-emulation-openemulator-explainer This was my attempt to understand what the code was doing, but I went down the “I... - Source: Hacker News / about 2 months ago

• A Canadian payroll dependency chart

  Graphs like this are terrible for visualizing dependencies. Even a reasonable system can "look messy" when rendered this way. I'd be more interested in seeing what this would look like as a tangled tree. [1] [1] https://observablehq.com/@nitaku/tangled-tree-visualization-ii. - Source: Hacker News / about 2 months ago

• Ask HN: Why is my web server being attacked?

  These "noise storms" are becoming more common than in previous years and are generally tied to global "major" events. This: https://observablehq.com/@greynoise/noise-storms has some explanation but I'd be glad to elaborate more if needed. - Source: Hacker News / 2 months ago

• 'The science is irrefutable': US warming faster than global average, says report

  The data has many different ways to tell the story. For example, 50 years of fires: https://observablehq.com/@ktrudeau/2023-fire-weather-days. - Source: Hacker News / 4 months ago

• A Coder Considers the Waning Days of the Craft

  I wrote just the tool to optimize AI in the hand of a coding expert https://observablehq.com/@tomlarkworthy/robocoop. - Source: Hacker News / 4 months ago

• 10k Bounty for Rewriting Prettier in Rust

  > except those that need to exchange large info rapidly I've seen attempts at zero-copy memory sharing between JS and WASM, but I'm not sure if the same approach would allow different plugins to share memory and communicate via e.g. Cap'n Proto? https://observablehq.com/@kylebarron/zero-copy-apache-arrow-with-webassembly. - Source: Hacker News / 4 months ago

• Only 15% of Californians can afford a home, new data shows

  All my data and methods are at https://observablehq.com/@jwb/berkeley-rent-board-data The key graph is https://observablehq.com/@jwb/berkeley-rent-board-data#cell-613. - Source: Hacker News / 4 months ago

• Building a high performance JSON parser

  Forgot to include the link: [0]: https://observablehq.com/@mootari/regex-from-strings. - Source: Hacker News / 4 months ago

• Ask HN: Create interactive animations like on ciechanow.ski?

  Thanks for the suggestion! The problem with threejs is that (I believe) the 2d support isn't that great. A lot of custom code is necessary, and often the results don't look great. See here for example: https://observablehq.com/@grantcuster/using-three-js-for-2d-data-visualization. - Source: Hacker News / 4 months ago

• How Big Data Carried Graph Theory into New Dimensions

  I find these hands-on examples of hypergraphs quite informative [0][1]. The first one for intuiting the mathematical foundations and the second one for encoding a 'time' dimension in a flat plane (althought not strictly speaking a hyper graph). A hypergraph example of Les Miserables provided a good demonstration the d3-hypergraph package as well, but unfortunately the bl.ocks.org live examples aren't up anymore... - Source: Hacker News / 4 months ago

• Lindenmayer Systems

  Here's an Observable notebook with a bunch of examples. [1] [1] https://observablehq.com/@kelleyvanevert/l-systems-2. - Source: Hacker News / 4 months ago

• Cubic Spline Interpolation

  Here's a write-up I made a couple years ago which I think does a bit better describing the math in question: https://observablehq.com/@jrus/cubic-spline. - Source: Hacker News / 4 months ago