From: Nick Dokos <nicholas.dokos@hp.com>
To: Bob Newell <bobnewell@bobnewell.net>
Cc: emacs-orgmode@gnu.org
Subject: Re: Distinguish between blank and zero in org-mode spreadsheet
Date: Tue, 11 Dec 2012 01:10:38 -0500 [thread overview]
Message-ID: <5596.1355206238@alphaville> (raw)
In-Reply-To: Message from Bob Newell <bobnewell@bobnewell.net> of "Tue, 11 Dec 2012 04:50:50 GMT." <loom.20121211T054246-546@post.gmane.org>
Bob Newell <bobnewell@bobnewell.net> wrote:
> I'm making it work, and using "L" rather than "S" turns out to be better, as in
> this revision of my example above:
>
> $9 = '(if (eq "$2" "") "" (* @2$8 $1));L
>
> But when I want different actions when there is an explicit number (including 0)
> vs. a blank cell, and if my action is at all complex, I end up with one monster
> like this:
>
> $3 = '(if (eq "$2" "") "" (if (< $2 @2$8) 0 (calcFunc-max 0 (calcFunc-ilog (/ $2
> @2$8) 2))));L
>
> and it just seems that "there oughta be a way" to do this with calc and outside
> of elisp. I've tried all sorts of calc things without success to date.
>
I don't know of a calc way to do it, but I'm no calc expert.
> (This gets even worse when you work with ranges and need to do operations on the
> cells in those ranges.)
>
> I guess the upside is that with elisp you can eventually do almost anything that
> comes to mind, if you have enough patience.
>
Yes indeed - but using babel, you can also organize your file so all the
complexity is encapsulated:
--8<---------------cut here---------------start------------->8---
* helpers
#+BEGIN_SRC elisp
(defun some-func-wrapper (x y)
(cond ((and (stringp x) (stringp y))
(if (or (string= x "") (string= y ""))
""
(some-func (string-to-number x) (string-to-number y))))))
(defun some-func (x y)
(* x y))
(defun sum-of-squares-wrapper (&rest x)
(sum-of-squares (mapcar 'string-to-number x)))
(defun sum-of-squares (l)
(apply '+ (mapcar (lambda (x) (* x x)) l)))
#+END_SRC
#+RESULTS:
: sum-of-squares
* table with empty cells
| a | b | c | d | e |
|---+---+----+---+----|
| 1 | 1 | 1 | 6 | 14 |
| 2 | 3 | 6 | 5 | 13 |
| | | | 3 | 9 |
| 3 | 4 | 12 | 3 | 9 |
#+TBLFM: $3 = '(some-func-wrapper $1 $2) :: $4 = vsum(@0$1..@>$1) :: $5 = '(sum-of-squares-wrapper @0$1..@>$1)
--8<---------------cut here---------------end--------------->8---
C-c C-c on the code block to define the functions and C-c C-c on the
table formula to recalculate the table. C-c ' on the code block
allows you to edit it conveniently.
My examples do not try to duplicate exactly any of your examples, but I
hope they can be generalized (and fairly easily too).
Nick
next prev parent reply other threads:[~2012-12-11 6:10 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-10 22:32 Distinguish between blank and zero in org-mode spreadsheet Bob Newell
2012-12-10 22:57 ` Thorsten Jolitz
2012-12-11 4:50 ` Bob Newell
2012-12-11 6:10 ` Nick Dokos [this message]
2012-12-11 15:14 ` Michael Brand
2012-12-15 9:15 ` Michael Brand
2012-12-15 9:23 ` Bastien
2012-12-28 14:10 ` Michael Brand
2012-12-29 13:39 ` Bastien
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://www.orgmode.org/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5596.1355206238@alphaville \
--to=nicholas.dokos@hp.com \
--cc=bobnewell@bobnewell.net \
--cc=emacs-orgmode@gnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
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).