Re: SI/engineering prefixes in plots and formatting

[Jean Bréfort <jean brefort normalesup org>]

Le mardi 14 juillet 2009 à 11:44 +0800, Jason Heeris a écrit :
> Hi,
>
> Using Gnumeric 1.9.9 under Debian Squeeze (GNOME 2.26.1).
>
> I've been trying to find any information on displaying quantities
> using SI/engineering prefixes, especially in plots. Basically, I want
> to display my x-axis markers as Hz, 10 Hz, 100 Hz, 1 kHz, 10 kHz, etc.
> Is there an way to do this?

Not at the moment. It would need an implementation at the format level.
Please consider filing a bug/enhancement report at bugzilla.gnome.org

> I can figure out how to do it for the column of data itself using
> lookups, logs and rounding:
>
> =concatenate(text(A2/10^(3*floor(log(A2)/3)),$E$9),lookup(floor(log(A2)),E$3:F$6))
>
> ...where $E$9 is a formatting string for the number itself (eg. "0")
> and E$3:F$6 is a lookup table for SI prefixes by power of 10. Ugly but
> works.
>
> But I can't figure out how (or if it's possible) to do a similar thing
> for plots.
>
> I found a discussion from January 04, but no further mention:
>
> http://mail.gnome.org/archives/gnumeric-list/2004-January/msg00032.html
>
> Cheers,
> Jason Heeris
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