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Subject: |
24.0.92; No units specified (dimensionless quantities in Emacs Calc) |
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Date: |
Wed, 18 Jan 2012 23:24:41 -0600 |
In Calc type
'e T m^2 / hbar
Convert this to SI units with u c si RET
- That's perfect. We get a dimensionless number.
Let's try again. In Calc type (more my range of numbers)
'e T nm^2 / hbar
Now when we type again u c, Calc remembers what we did before.
So as a unit it offers "default 1". Let's take this default.
So just type RET
Error: No units specified
In other words: if an expression with units simplifies to a
dimensionless number, Calc does not accept the unit "1", though it
even offers this unit as a default for calc-convert-units.
In GNU Emacs 24.0.92.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.20.1)
of 2011-12-14 on regnitz
Windowing system distributor `The X.Org Foundation', version 11.0.10706000
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--- Begin Message ---
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Subject: |
Re: bug#10554: 24.0.92; No units specified (dimensionless quantities in Emacs Calc) |
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Date: |
Fri, 20 Jan 2012 22:21:59 -0600 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.0.92 (gnu/linux) |
> In Calc type
>
> 'e T m^2 / hbar
>
> Convert this to SI units with u c si RET
> - That's perfect. We get a dimensionless number.
> Let's try again. In Calc type (more my range of numbers)
>
> 'e T nm^2 / hbar
>
> Now when we type again u c, Calc remembers what we did before.
> So as a unit it offers "default 1". Let's take this default.
> So just type RET
>
> Error: No units specified
>
> In other words: if an expression with units simplifies to a
> dimensionless number, Calc does not accept the unit "1", though it
> even offers this unit as a default for calc-convert-units.
The version of Calc in bzr Emacs will no longer offer "1" as a default.
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