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Re: [O] [PATCH] getting calc-units working in table formulas
From: |
Nicolas Goaziou |
Subject: |
Re: [O] [PATCH] getting calc-units working in table formulas |
Date: |
Sat, 20 Dec 2014 17:33:11 +0100 |
Hello,
Eric Abrahamsen <address@hidden> writes:
> Here's the doc patch, hope all is in order.
Thanks. Some comments follow.
> +Calc also comes with support for unit calculations, via the @code{calc-units}
> +package. For a complete list of recognized units, call
> address@hidden Units can be specified with or without a space
> +between the number and the unit name, eg @samp{2 ft} is the same as
"eg" -> "e.g.,"
> address@hidden Rates are handled automatically: multiplying @samp{3 m/s} by
> two
> +will give @samp{6 m / s}. By default, @code{calc-units} only defines one
> +units-related function for use in tables, @code{usimplify}, which can take an
> +expression such as @samp{42 km / 2.5 h} and return @samp{16.8 km / hr}.
> +Another useful function to define might be @code{math-convert-units},
> eg:
Ditto.
> address@hidden
> +(defmath uconv (expr target-units &optional pure)
> + (math-convert-units expr target-units pure))
> address@hidden example
I think you should use @lisp instead of @example here.
> +Which would allow you to use @samp{uconv($1, ft)} to, for example, convert a
> +distance specified in the cell @samp{$1} into feet. The optional
> 'pure
@code{pure} instead of 'pure
Regards,
--
Nicolas Goaziou