* Newbie Questions on Spreadsheets
@ 2022-05-19 2:13 Jun Inoue
2022-05-19 13:45 ` Quiliro Ordóñez
0 siblings, 1 reply; 4+ messages in thread
From: Jun Inoue @ 2022-05-19 2:13 UTC (permalink / raw)
To: emacs-orgmode
[-- Attachment #1: Type: text/plain, Size: 2805 bytes --]
Hi! I've recently started using org mode, and have loved pretty much every
step of it. Thanks for all your work!
I just discovered the power of tables and spreadsheets and started toying
around with it, but there are a few things I can't get to work the way I
want. Would someone please help me out, or tell me if I'm trying to use it
wrong?
1. How do you apply a column formula?
The info manual mentions C-u C-c *, but this doesn't always work. For
example, I have
| $ | | |
| | 2.80 | |
| | 5.53 | |
#+TBLFM: $3=$2
and typing C-u C-c * inside the table changes nothing. If I remove the $
cell the C-u C-c * does update the whole table, so could it be a bug in the
handling of $?
2. Is there a way to move/delete columns and rows without screwing up
formulas?
While minimizing the example above, I deleted a bunch of columns from a
larger table using org-table-delete-column, only to find that the formulas
are not updated, so they become dangling references or reference the wrong
columns. Same for rows, or moving them with e.g. org-metadown. Is there a
way to have the formulas update as I restructure the table?
3. Formatting directives seem to take the numerators of rationals.
For example, if I hit C-c C-c in
| 5:6 | :=@1$1;%.2f |
I get
| 5:6 | 5.00 |
#+TBLFM: @1$2=@1$1;%.2f
whereas I would have expected the last column to be 0.17. It seems that %f
directives take the numerators of ratios, but I would have expected it to
coerce to the closest floating point instead. (It doesn't make sense to
me: when would you /want/ to drop the denominator?) I know I can coerce
manually with float(), but counting on myself to insert that every time
sounds like a mistake waiting to happen.
Is there a way to customize it so that ratios are converted to float by the
%f directive, rather than having its denominator thrown away?
4. Is there a way to combine concise display with high-precision
calculations?
I prefer floating point to be formatted concisely, like %.2f, to avoid
visual clutter and to keep column sizes manageable (especially since I use
visual-line-mode). But if I put %.2f everywhere, I quickly run into
precision issues. For example:
| :=2/3;%.2f | := @1$1+@1$1 | :=@1$2 + @1$2 + @1$2 |
Evaluating these formulas gives
| 0.67 | 1.34 | 4.02 |
#+TBLFM: @1$1=2/3;%.2f::@1$2=@1$1+@1$1::@1$3=@1$2 + @1$2 + @1$2
The calculation is cut off at two decimal places. Full-blown spreadsheet
software usually separates the internal data representation from the
formatting, so that formatting doesn't affect precision. Is there a way to
achieve a similar effect, or is that difficult given how org-mode tables
keep all the data as explicit text?
BTW, I'm using Org mode 9.5.2 with Emacs 28.1 on macOS (so-called
Mitsuharu's mac-port).
--
Jun Inoue
[-- Attachment #2: Type: text/html, Size: 3142 bytes --]
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Newbie Questions on Spreadsheets
2022-05-19 2:13 Newbie Questions on Spreadsheets Jun Inoue
@ 2022-05-19 13:45 ` Quiliro Ordóñez
2022-05-19 23:14 ` Jun Inoue
0 siblings, 1 reply; 4+ messages in thread
From: Quiliro Ordóñez @ 2022-05-19 13:45 UTC (permalink / raw)
To: emacs-orgmode
El 2022-05-18 21:13, Jun Inoue escribió:
> 1. How do you apply a column formula?
>
> The info manual mentions C-u C-c *, but this doesn't always work. For
> example, I have
>
> | $ | | |
> | | 2.80 | |
> | | 5.53 | |
> #+TBLFM: $3=$2
>
> and typing C-u C-c * inside the table changes nothing. If I remove
> the $ cell the C-u C-c * does update the whole table, so could it be a
> bug in the handling of $?
I changed the `$' for `dollars' and it worked for me. I am a newbie
too.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Newbie Questions on Spreadsheets
2022-05-19 13:45 ` Quiliro Ordóñez
@ 2022-05-19 23:14 ` Jun Inoue
2022-05-20 0:37 ` Quiliro Ordóñez
0 siblings, 1 reply; 4+ messages in thread
From: Jun Inoue @ 2022-05-19 23:14 UTC (permalink / raw)
To: Quiliro Ordóñez; +Cc: emacs-orgmode
[-- Attachment #1: Type: text/plain, Size: 847 bytes --]
On Thu, May 19, 2022 at 10:47 PM Quiliro Ordóñez <quiliro@riseup.net> wrote:
> El 2022-05-18 21:13, Jun Inoue escribió:
>
> > 1. How do you apply a column formula?
> >
> > The info manual mentions C-u C-c *, but this doesn't always work. For
> > example, I have
> >
> > | $ | | |
> > | | 2.80 | |
> > | | 5.53 | |
> > #+TBLFM: $3=$2
> >
> > and typing C-u C-c * inside the table changes nothing. If I remove
> > the $ cell the C-u C-c * does update the whole table, so could it be a
> > bug in the handling of $?
>
> I changed the `$' for `dollars' and it worked for me. I am a newbie
> too.
>
>
Hi Quiliro! This $ is actually not a money amount, but it has special
meaning within org-mode spreadsheets. Have a look at this page:
https://orgmode.org/manual/Advanced-features.html
--
Jun Inoue
[-- Attachment #2: Type: text/html, Size: 1395 bytes --]
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Newbie Questions on Spreadsheets
2022-05-19 23:14 ` Jun Inoue
@ 2022-05-20 0:37 ` Quiliro Ordóñez
0 siblings, 0 replies; 4+ messages in thread
From: Quiliro Ordóñez @ 2022-05-20 0:37 UTC (permalink / raw)
To: Jun Inoue; +Cc: emacs-orgmode
El 2022-05-19 18:14, Jun Inoue escribió:
> Hi Quiliro! This $ is actually not a money amount, but it has special
> meaning within org-mode spreadsheets. Have a look at this page:
> https://orgmode.org/manual/Advanced-features.html
Nice! Thanks.
‘$’ Fields in this row can define parameters for formulas. For
example, if a field in a ‘$’ row contains ‘max=50’, then formulas in
this table can refer to the value 50 using ‘$max’. Parameters work
exactly like constants, only that they can be defined on a per-table
basis.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2022-05-20 0:38 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-05-19 2:13 Newbie Questions on Spreadsheets Jun Inoue
2022-05-19 13:45 ` Quiliro Ordóñez
2022-05-19 23:14 ` Jun Inoue
2022-05-20 0:37 ` Quiliro Ordóñez
Code repositories for project(s) associated with this public inbox
https://git.savannah.gnu.org/cgit/emacs/org-mode.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).