erfa
oorb
erfa | oorb | |
---|---|---|
2 | 3 | |
125 | 54 | |
0.0% | - | |
4.0 | 5.3 | |
10 days ago | about 2 months ago | |
C | Fortran | |
GNU General Public License v3.0 or later | GNU General Public License v3.0 only |
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erfa
- Julia 1.10 Released
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License Adherence Help
I'm working on a pure Rust approximation of astropy. Up til now, I was able to recreate the intent by looking at an external API, but I'm moving on to functionality that I don't understand enough to implement without basically copying the code. Astropy uses the BSD-3 license, and it wraps the ERFA library which uses a custom license. My project currently uses the MIT license. My PR is here - my question is have I attributed everything correctly, or is there anything I need to change for everything to be above-board?
oorb
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Show HN: OpenOrb, a curated search engine for Atom and RSS feeds
Imagine my surprise to see OpenOrb, the standard open source software package for orbit determination and minor planet propagation, on the front page of HackerNews. Its interesting software with a beautiful theoretical basis in Bayesian statistics, and a gnarly Fortran codebase - I can’t wait to see the discussion!
Oh.
It’s one thing to land near a name in use. It is quite another to take it directly!
https://github.com/oorb/oorb
- Julia 1.10 Released
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NASA’s Double Asteroid Redirection Test Is a Smashing Success
Mostly Python and Fortran. See for example https://github.com/oorb/oorb.
The hardest problems are always the social ones. How do you get uptake of a new method, how do you get funding, how do you politely tell a collaboration they are doing the wrong thing, etc.
But if you mean pure technical stuff - the hardest problem I had to solve was rethinking some of the inner loops of the THOR algorithm. The problem was essentially to speed up a Hough transform in 6D space. Lots of time spent profiling CPU cache timings to get that fast.
What are some alternatives?
astro-rs - Astronomy utils written in Rust
thor - Tracklet-less Heliocentric Orbit Recovery
astropy - Astronomy and astrophysics core library
Torch.jl - Sensible extensions for exposing torch in Julia.
threads - Threads for Lua and LuaJIT. Transparent exchange of data between threads is allowed thanks to torch serialization.
assist - ASSIST is a software package for ephemeris-quality integrations of test particles.
Tidier.jl - Meta-package for data analysis in Julia, modeled after the R tidyverse.
PyCallChainRules.jl - Differentiate python calls from Julia
Lux.jl - Explicitly Parameterized Neural Networks in Julia