Phew, altitude PR and probably the most incredible view I’ve seen from a mountain. 🌋🦙 #cotopaxi #volcano #ecuador #mountaineering

Every now and then I find an album I can listen to endlessly on repeat, and right now it’s Paul-Marie Barbier’s Solo on the Side. m.youtube.com/watch?v=Q4Lu...

OMG hummingbirds

Can you believe that back in the day the recommended solution was not just to shut it down and turn it back on again, but to actually drop the entire thing six inches onto a hard surface in the hope that loose senators would reseat themselves?

Wow, @observablehq.com's new Notebooks 2.0 seems really, really good. An offline editor app, a pleasantly-human-readable notebook format, and had no trouble integrating it into my website here: rreusser.github.io/notebooks/he...

I'm in the phase of my programming career where I've figured out how to write a simple-enough recursive descent parser, and suddenly everything looks like a parsing problem.

Turn on the sound — this is how nearly every night sounds for me and my family. Imagine getting used to that, living, working, raising kids. A lesson the world didn’t learn from WW2: when you tolerate and appease evil, it grows stronger, and you won’t notice until it reaches your home.

Expanded it to work across an array of satellite tiles and added soft shadows. Softening shadows around the azimuth is easy because you just average samples (here, 16), and along the altitude is even easier because the horizon algorithm gives enough information to simply do a smooth fade.

A 24-hour loop of summer solstice sun rising over Mount Adams, Washington, USA. Not terribly user-friendly, but you can select a region and encode a loop here: observablehq.com/@rreusser/li...

Relatively pleased with this development.

Halfway through a week of looking after our neighbor’s cat and have discovered: I appear to be allergic to cats.

Pretty good turnout! #nokings

🎵 2 weeks ago, me and my band Obiymy Doschu have released “Vidrada”, our new album, passionately crafted in Kyiv for 7 years. I've never been more invested in a project, and will be proud of it for the rest of my life. All my love, dreams, hopes and worries in one record. ⬇️

Made a quick page for sharing/browsing Mapbox maps. Has a screenshot button, a style selector, a share link, and can add to homescreen, if that's your thing. E.g. an excellent boat wake 🚢: rreusser.github.io/maps/box-o-m...

If you write “Voight–Kampff” instead of “Voight-Kampff” you’re a LLM.

Omg, 😍. “This is a site for pictures of owls… in towels.” owlsintowels.org

@vtcraghead.bsky.social 2*arcsin(1/3). Nice.

Happened to stay up late and catch Sam Watson (spoiler alert) setting two speed climbing world records last night! Made a quick plot of the world record progression, and if we can simply extrapolate this, then it looks reasonable to expect more. So fast. #climbing observablehq.com/@rreusser/sp...

A photo from a recent trip to Wadi Rum, Jordan. Still in absolute awe of the place. Absolutely excellent climbing, plenty of interesting fauna, and the people were extremely friendly (and confused about what's going on in the US). (full disclosure: photo has been slightly edited.)

Alright, fixed the ad hoc lighting computation for my terrain shading, I think. Always tricky to balance good appearance and good controllability. Try it live here: observablehq.com/@rreusser/li...

The sun rising over Thor Peak, Auyuittuq National Park, Canada. It's using line sweep horizon tracking to compute ambient occlusion and physically accurate shadows together with relief shading, all packed into an RGBA texture. Pretty happy with the scanline algorithm, but the shading needs work.

A more modest Trains and Trails run this week through Briones Regional Park. 14 miles and just over 3 hours from door to door. Already can't wait to go back. ☀️🏃‍♂️🐄 rreusser.github.io/trains-and-t... #running #trailrunning

Please help my mug did a topology

I've put a lot of work into the template for my running blog site. Not looking for congratulations, just genuinely curious: if I took the time to clean up the rough edges and turn it into a proper authoring tool, is that a thing literally anyone would use/want? rreusser.github.io/trains-and-t...

New Trains and Trails! From Lagunitas, toward Point Reyes National Seashore, then back down the ridge to Stinson Beach. And a Dipsea. A pretty intense day by the end, but I'm going to call this the best route I've run in the Bay Area. Oh my gosh it was lovely. 🌲🥰🌲 rreusser.github.io/trains-and-t...

When I finally open my bakery, its name will be “Pas de Pain, Pas de Gain.”

Sometimes you're goofing off and stumble upon someone's little corner of the web, and something really wows you, and the next thing you know it's three hours later and oh no I think I was supposed to pick a kid up from school. (On here as @rreusser.bsky.social)

Antioch to Mount Diablo, my first Trains and Trails addition in over a year. 27.5 miles, 5 hours 20 minutes, 5400 feet up/5100 feet down. Rough day overall, but always nice to get out there. 👏 rreusser.github.io/trains-and-t...

Yay, a long run up Mount Diablo, in accordance with my tradition of putting myself in a distressed post-long-run stupor so that I can enjoy the game! (File photo ⛰️)

Top comment on the recent NYT story on DOGE’s young aides www.nytimes.com/shared/comme...

LOL a slow, downhill, trail 2 mile PR, thanks Strava. strava.app.link/sJQ2SbAjfQb

Every couple years I check in, hoping someone finally put together a BLAS/LAPACK solution for the web, but—and correct me if I'm wrong—2025 is here, and I'm still not aware of one. Since I don't have a job, maybe it's finally time to make it happen.

I’m not even a particular fan of Chopin, but if you have a passing interest in piano, The Chopin Podcast by Garrick Ohlsson and Ben Laude is so exceptionally good. podcasts.apple.com/us/podcast/t...

Yay a potential flow panel solver. Variables are source/sink strength distributed along each segment and uniform circulation along the curve. It solves for the values that make flow 1) not pass through the rigid surface, and 2) leave the trailing edge smoothly. 🛫 rreusser.github.io/hess-smith-p...

I don't trust your status page. What I really want to see is the number of people currently viewing your status page.

Wanted to catch sunrise on Half Dome. Arrived at about the right time but then sat/slept in car for two hours with (literally) cold feet trying to psych myself up and not bail completely. Went through with it; no sunrise. Bad run, but a lovely day.

absolutely incredible attack vector

One more music bit I want to share: a live video from a recent acoustic performance in Kyiv, with a song about not giving up — feels especially relevant that's it out today, after yet another mass missile strike on Ukrainian civilians. youtu.be/0oMRsFizTTg

I am from thousands of miles away, but letting myself forget the scenery for a moment, an icy, silent run in late autumn brought on an unexpectedly intense wave of homesickness.

Not quite certain what I'm doing with my time off just yet. Mostly just reading other people's code, documentation and tutorials. Feels like it must somehow equate to time well spent, even if I'm not sure quite how just yet.

A hydraulic erosion simulation, but it's a bit finicky and unstable and I'm not super happy with it. Try it live here: observablehq.com/@rreusser/hy...