Joshua Ulrich
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joshuaulrich.bsky.social
Joshua Ulrich
@joshuaulrich.bsky.social
Quant finance. R code artisan and package maintainer. R/Finance committee. Ice hockey player.

You can support my open-source work
https://github.com/sponsors/joshuaulrich

I blog at https://blog.fosstrading.com/
The patched version of quantmod is on cran now!
June 23, 2025 at 7:06 PM
It makes me sad that this is a common opinion of "R" due to the choices of prominent package authors and their financial sponsors.

R itself is very stable and most of the publications that do not use the offending prominent packages remain valid and useful for years.
November 8, 2023 at 3:49 PM
I've only used ggplot a handful of times.
July 30, 2023 at 12:46 AM
I was lined up with her at a face-off, and struck up a conversation while one player was mouthing off to the refs.

Her: I'm just here to exercise and have fun. I don't understand acting like that
Me: Of course you don't. You don't have testosterone poisoning
Her: lol
July 19, 2023 at 5:33 PM
These have been incredibly useful when I have to track down bugs that the CRAN team have identified.

I use the ASAN/UBSAN containers to check xts before every release.

Thanks Winston!
July 18, 2023 at 7:38 PM
I barely recognize you without a mug in front of your face
June 14, 2023 at 12:36 AM
What does the chart look like if the y-axis is linear scale? It seems like the relationship could be linear-ish.
June 8, 2023 at 6:40 PM
My first thought was that it might be related to futures funding times. But looked at a couple exchanges and they were every 8 hours.
June 8, 2023 at 6:35 PM