Hello everyone, I want to use an org-spreadsheet to perform unit conversions for me. | Mass (g) | Mass (lb) | |----------+---------------| | 300 g | 0.66138679 lb | | 23 kg | 50.706320 lb | | 50 Mg | 110231.13 lb | #+TBLFM: $2=uconvert($1, lb) I made the table above, but can't figure out how to format the output. I tried using the ;%.2f notation shown in the manual, but it cuts the units off for some reason. Here is what org-table displays with ;%.2f appended onto my table formula: | Mass (g) | Mass (lb) | |----------+---------------| | 300 g | 0.66 | | 23 kg | 50.71 | | 50 Mg | 110231.13 | #+TBLFM: $2=uconvert($1, lb);%.2f Here is what I wish appending ;%.2f would cause org-table to display: | Mass (g) | Mass (lb) | |----------+---------------| | 300 g | 0.66 lb | | 23 kg | 50.71 lb | | 50 Mg | 110231.13 lb | #+TBLFM: $2=uconvert($1, lb);%.2f If you type in '0.66138679 lb into calc directly, and press d f 2, calc displays 0.66 lb as desired. Is there any reason for the %.2f notation chops off the units? Is there some better way to accomplish what I want? Thanks! Note: my spreadsheet uses the wrapper function below to convert units with calc. #+begin_src emacs-lisp (defmath uconvert (expression new-units) (math-convert-units expression new-units))) #+end_src -- Kyle C. Andrews kyle.c.andrews@gmail.com

```
Kyle Andrews <kyle.c.andrews@gmail.com> wrote:
> Hello everyone,
>
> I want to use an org-spreadsheet to perform unit conversions for me.
>
> | Mass (g) | Mass (lb) |
> |----------+---------------|
> | 300 g | 0.66138679 lb |
> | 23 kg | 50.706320 lb |
> | 50 Mg | 110231.13 lb |
> #+TBLFM: $2=uconvert($1, lb)
>
>
> I made the table above, but can't figure out how to format the output. I
> tried using the ;%.2f notation shown in the manual, but it cuts the
> units off for some reason.
>
> Here is what org-table displays with ;%.2f appended onto my table
> formula:
>
> | Mass (g) | Mass (lb) |
> |----------+---------------|
> | 300 g | 0.66 |
> | 23 kg | 50.71 |
> | 50 Mg | 110231.13 |
> #+TBLFM: $2=uconvert($1, lb);%.2f
>
>
> Here is what I wish appending ;%.2f would cause org-table to display:
>
>
> | Mass (g) | Mass (lb) |
> |----------+---------------|
> | 300 g | 0.66 lb |
> | 23 kg | 50.71 lb |
> | 50 Mg | 110231.13 lb |
> #+TBLFM: $2=uconvert($1, lb);%.2f
>
>
> If you type in '0.66138679 lb into calc directly, and press d f 2, calc
> displays 0.66 lb as desired. Is there any reason for the %.2f notation
> chops off the units? Is there some better way to accomplish what I
> want?
>
> Thanks!
>
>
> Note: my spreadsheet uses the wrapper function below to convert units with calc.
>
> #+begin_src emacs-lisp
> (defmath uconvert (expression new-units)
> (math-convert-units expression new-units)))
> #+end_src
>
There might be a better, more local, way of doing it, so take the following as an
existence proof: if you customize the variable org-calc-default-modes and change
the calc-float-format to (fix 2), the table will recalculate to your expectations.
I don't know how to stitch together the better solution however, so I leave that
as an exercise for you :-)
Nick
```

```
Hi Kyle
On Wed, Sep 5, 2012 at 11:46 PM, Kyle Andrews <kyle.c.andrews@gmail.com> wrote:
> If you type in '0.66138679 lb into calc directly, and press d f 2, calc
> displays 0.66 lb as desired. Is there any reason for the %.2f notation
> chops off the units? Is there some better way to accomplish what I
> want?
Org spreadsheet gives access to the format of calc, use
#+TBLFM: $2=uconvert($1, lb);f-2
or less recommended the format of Org spreadsheet with a text
#+TBLFM: $2=uconvert($1, lb);%.2f lb
Michael
```

[-- Attachment #1: Type: text/plain, Size: 389 bytes --] Hi all On Wed, Sep 5, 2012 at 11:46 PM, Kyle Andrews <kyle.c.andrews@gmail.com> wrote: > [...] > #+TBLFM: $2=uconvert($1, lb) > [...] > #+begin_src emacs-lisp > (defmath uconvert (expression new-units) > (math-convert-units expression new-units))) > #+end_src Calc `defmath' is not mentioned in the Org manual or on Worg, so I suggest the attached patch for the Org manual. Michael [-- Attachment #2: 0001-org.texi-Mention-defmath.patch.txt --] [-- Type: text/plain, Size: 1021 bytes --] From 64c0fad8b4fddca4b8839fadc52d2f2e7086ebd6 Mon Sep 17 00:00:00 2001 From: Michael Brand <michael.ch.brand@gmail.com> Date: Fri, 7 Sep 2012 19:24:14 +0200 Subject: [PATCH] org.texi: Mention Calc defmath * org.texi (Formula syntax for Calc): Add a sentence to mention Calc defmath. --- doc/org.texi | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/doc/org.texi b/doc/org.texi index b82d5db..c9fc008 100644 --- a/doc/org.texi +++ b/doc/org.texi @@ -2659,6 +2659,9 @@ if($1<20,teen,string("")) @r{"teen" if age $1 less than 20, else empty} Note that you can also use two org-specific flags @code{T} and @code{t} for durations computations @ref{Durations and time values}. +You can add your own Calc functions defined in Emacs Lisp with @code{defmath} +and use them in formula syntax for Calc. + @node Formula syntax for Lisp, Durations and time values, Formula syntax for Calc, The spreadsheet @subsection Emacs Lisp forms as formulas @cindex Lisp forms, as table formulas -- 1.7.4.2

```
Hi Michael,
Michael Brand <michael.ch.brand@gmail.com> writes:
> Calc `defmath' is not mentioned in the Org manual or on Worg, so I
> suggest the attached patch for the Org manual.
Applied, thanks!
--
Bastien
```