That requires an implementation of ΔT <https://en.wikipedia.org/wiki/%CE%94T>, which I don't think we have unless ICU has it.
On Wed, Feb 17, 2016 at 8:06 AM, Scott Jones <[email protected]> wrote: > Is there anything to convert to/from Julia's UT seconds (which are tied to > the Earth's rotation), and SI seconds? > > > On Friday, February 12, 2016 at 3:23:22 PM UTC-5, Andrew Keller wrote: >> >> I'm happy to share a package I wrote for using physical units in Julia, >> Unitful.jl <https://www.github.com/ajkeller34/Unitful.jl>. Much credit >> and gratitude is due to Keno Fischer for the SIUnits.jl >> <https://www.github.com/keno/SIUnits.jl> package which served as my >> inspiration. This is a work in progress, but I think perhaps a serviceable >> one depending on what you're doing. >> >> Like SIUnits.jl, this package encodes units in the type signature to >> avoid run-time performance penalties. From there, the implementations >> diverge. The package is targeted to Julia 0.5 / master, as there are some >> limitations with how promote_op is used in Julia 0.4 (#13803) >> <https://github.com/JuliaLang/julia/pull/13803>. I decided it wasn't >> worth targeting 0.4 if the behavior would be inconsistent. >> >> Some highlights include: >> >> - Non-SI units are treated on the same footing as SI units, with only >> a few exceptions (unit conversion method). Use whatever weird units >> you want. >> - Support for units like micron / (meter Kelvin), where some of the >> units could cancel out but you don't necessarily want them to. >> - Support for LinSpace and other Range types. Probably there are >> still some glitches to be found, though. >> - Support for rational exponents of units. >> - Some tests (see these for usage examples). >> >> Please see the documentation for a comprehensive discussion, including >> issues / to do list, as well as how to add your own units, etc. >> Comments and feedback are welcome. >> >> Best, >> Andrew Keller >> >
