I'm having a hard time figuring out the LaTeX commands to define new units of year and century in siunitx.
I'd like to write \SI{3}{\cm\per\year} and have it show: 3 cm yr-1, or \SI{42}{\micro\meter\per\century} become 4.2E-5 m/century
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In your preamble
\DeclareSIUnit\century{century}
\DeclareSIUnit\year{yr}
See the siunitx manual (v2.1 series), Section 4.5, page 12.
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I have added
\DeclareSIUnit\annum{a}, but it does not seem to have any effect. How to I find out what version I'm using? – mankoff Dec 1 '10 at 17:49 -
Add
\listfilesto your source and look in the log. I'd be interested to see an example of this: perhaps you can post one here. – Joseph Wright♦ Dec 1 '10 at 18:01 -
OK, I'm using v1.0i (2008/08/14), probably because my LaTeX is via OS X
fink install texlivewhich is v 2008. I presume an example is no longer necessary. – mankoff Dec 1 '10 at 18:24 -
Okay, in that case you want
\newunit\annum{a}. (I'd also note that it is generally recommended to use MacTeX or vanilla TeX Live on OS X, rather than using one of the ports, as you get a much more up to date system.) – Joseph Wright♦ Dec 1 '10 at 19:12
\SI{3}{\cm\per yr}, pehaps you could add a little more detail to your question? – Seamus Nov 26 '10 at 21:58siunitxcan convert prefixes into powers, but does not then attempt to update the number to account for this. I guess I can add this as a feature request for v2.2. – Joseph Wright♦ Nov 26 '10 at 22:18