Viewing profile — ChrisFoster

Exactly my thought too. The offset is just the zero frequency. But in general, the need to do this for the zero frequency would suggest that there's a scaling problem for all the l…

I'm not sure we're disagreeing here? As I understand it, some people have a certain kind of distractable brain and there's an underlying brain chemistry implicated here which isn't…

ADHD is a developmental condition which is highly genetic and relates to neurotransmitter brain chemistry (Dopamine / Norepinephrine). People with ADHD have it their whole life, it…

This is from to the history of how the Julia language was bootstrapped. The fact that Jeff happened to have written his own scheme (femtolisp) as a previous project probably helped…

That's biologically impossible, but we might end up with weeds which resemble the crop in new and interesting ways. This has already happened in history for weeds which came under …

I used to think this was true (as a developer of a lot of generic Julia code and small data analysis applications). But now as a developer of larger amounts of "application style" …

Have you tried Infiltrator.jl? It's great for breaking out into an interactive REPL from some inner scope, allowing you to examine the local variables and other program state inter…

Yes, well put. I'd take it further - in numerical code there is no real distinction /at all/ between closed form vs iterative solutions. Every type of numerical code is subject to …

This is really neat. In the past I've used similar techniques to decode binary data from a third party lidar system in parallel. In a way that the manufacturers probably didn't int…

> it makes a mess of your system that is hard to clean up This was true in the past, but the Julia ecosystem has rapidly moved away from installing anything via system package mana…

The piston idea seems like a appealing design requiring minimal new technology. The plant is the same as existing pumped hydro plant, the weight can come from the native rock. Usin…

No, I'd say it was an almost-complete success. The point of this was to test several things which they've never tested before and gather data to drive design improvements. They suc…

Punning through the union is explicitly allowed in the GCC documentation which explains why it's reliable for use in the Linux kernel. See https://gcc.gnu.org/onlinedocs/gcc/Optimi…

Actually the heat arises from the natural decay of radioactive elements within the Earth. In the far future it will be gone! It's true that in the early history of the Earth there …

> A function does not spring into existence until the definition of the function is executed. Methods and their type signatures do exist within the runtime as soon as the function …

I liked the following blog post where Jack Lindamood argues pretty convincingly against using Context.Value in nearly all circumstances, and gives some nice alternatives. https://m…

Agreed, treating log events as a string seems like throwing a lot of readily available information away. There's various logging libraries which do allow more structure but too oft…

I agree the exterior algebra is beautifully elegant mathematics, but expressive elegance of the formalism is largely irrelevant to numerical robustness. (Cramer's rule itself is a …

In terms of engineering, I can't see how steering this beam would be remotely viable: it appears you've got to line up the long axes of the 1000 km circumference muon ring to point…

My main concern with this comparison is that there's no mention of numerical stability / accuracy of this method. Calculating determinants is notoriously prone to cancellation erro…

"Static" is a reference to the size of the arrays being fixed and encoded in the type. There's various allocation strategies, for instance StaticArrays.SizedArray uses a normal hea…

A year or so I looked into "git for data" for medical research data curation. At the time I found a couple of promising solutions based on wrapping git and git annex: GIN: https://…

Current MR physicist / data scientist here. There seems to be a lot of misapprehension in this thread. First, this work is about taking data in the sensor domain ("k-space") and re…

Julia has been excellent for shelling out since almost the beginning. See https://julialang.org/blog/2012/03/shelling-out-sucks

The models you'd use for map making are often really simple. For example, the Australian plate motion model is a "seven parameter transformation" - three translations, three rotati…