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Date: Tue, 11 Dec 2012 08:49:15 -0500
Message-ID: <CAM2RGhSw9PLVoGFQGWmC17ZrBuZAy=24NE2O5A8Bm6Ar6ONJtA@mail.gmail.com>
Subject: Re: [geda-user] Translating SI notation to SPICE
From: Evan Foss <evanfoss AT gmail DOT com>
To: geda-user AT delorie DOT com
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Precedence: bulk

I don't like that because it would mean 4.7u/F which looks so wrong.
Besides there are people who do math in gschem and that use of the
division symbol would be a mess for them. Multiplication would be ok
if not ugly. I know mathcad does it that way.

On Tue, Dec 11, 2012 at 3:00 AM, Karl Hammar <karl AT aspodata DOT se> wrote:
> Evan Foss:
>> For the over bar on things we have the \_ what if we declared \S to
>> delineate the part of the attribute that is the scale? Alternatively
>> we could go the mathcad route and put a multiplication sight between
>> the scale and the units but I think that looks ugly.
>
> Why not write it as an engineer/scientist would do it?
> E.g. 10 Hz, 10Hz, 10 1/s, 15 A/V, 25 m/s2, 2e-4mmol, 3 km/ms, 3 V/As ...
>
> It cannot be that hard to parse that, something like:
>
> value : number dimension
> dimension : tdimension | tdimension "/" tdimension
> tdimension : "" | "1" | prefix unit | tdimension sep tdimension |
>              tdimension exponent | "(" tdimension ")" exponent
> sep : " " | "*"
>
> Regards,
> /Karl Hammar
>
> -----------------------------------------------------------------------
> Aspö Data
> Lilla Aspö 148
> S-742 94 Östhammar
> Sweden
> +46 173 140 57
>
>



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