And now it's all this

And now it's all this

Dr. Drang

I just said what I said and it was wrong or was taken wrong

Latest Posts

Latest sunrise and earliest sunset

Here’s a fun post by Andrew Plotkin. He’s a late riser, so the shortest day of the year, which is on the solstice, means nothing to him. He’s interested in the date of the...

Solving a snaky math problem with Mathematica

[Equations in this post may not look right (or appear at all) in your RSS reader. Go to the original article to see them rendered properly.] I’m in the middle of a three-lecture...

Date calculations on the iPhone

Back in early 2023, I wrote about combining some of my simple command-line date commands into a single Keyboard Maestro macro. This became my go-to system for quickly getting...

A sense of structure

I checked out Practical Approximate Analysis of Beams and Frames from the University of Illinois library a couple of weeks ago. I haven’t dug into it deeply yet, but I smiled in...

Thanksgivings and Thursdays

Thanksgiving is not the last Thursday of November. I mean, it is this year, and it usually is, but that’s not how it’s determined. Since 1942, Thanksgiving—the US one, not the...

NASA fact sheets—missing and found

While I was putting together my recent post on Maya calendar calculations, I tried to get some information on the Moon from a NASA website. Specifically, a page with the prosaic...

Web logs with Pandas

I don’t care much about monitoring the traffic here, but analyzing web logs seemed like a good way to practice using Pandas. I used some old data analysis friends, like groupby,...

Some Maya calendar calculations

Longtime readers of this blog know I’m a sucker for calendrical calculations. So I couldn’t stop myself from doing some after reading this article by Jennifer Ouellette at Ars...

Charting malpractice

I expect Fox News to make bad charts as part of its predisposition to promote right wing views. But today I saw an incredibly bad chart that, as far as I can tell, doesn’t...

Casting about again

Except for a short period when its original developers were unable to keep up and the app suffered badly, Castro has been my podcast player for many years. Its triage system of...

Variance of a sum

[Equations in this post may not look right (or appear at all) in your RSS reader. Go to the original article to see them rendered properly.] Earlier this week, John D. Cook...

Snow and memory

Two things came together over the past few days. First was my longstanding belief that winters here in the Chicago area were snowier when I was a kid than they are now. I’m not...

The wait for new Siri continues

Yesterday, I drove to Champaign-Urbana for the Illinois men’s home basketball opener. Because I’m going to the CSO concert tonight, I stayed here overnight. When I started my...

The problem with dollars

I stopped charting Apple’s quarterly results back in 2019 and don’t intend to return to it, but after seeing the recent posts at Six Colors and TidBITS, I thought I’d try out a...

Vectors and weathervanes

Before going out for a bike ride this morning, I checked the Weather app to see the speed and direction of the wind. On days with a decent wind, I prefer to ride out against the...
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