From mboxrd@z Thu Jan 1 00:00:00 1970 From: Michael Brand Subject: new spreadsheet features: field coordinates, multi line TBLFM with comments Date: Sat, 13 Mar 2010 16:27:14 +0100 Message-ID: <4B9BAED2.8000600@alumni.ethz.ch> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1NqTFN-0004QC-2J for emacs-orgmode@gnu.org; Sat, 13 Mar 2010 10:27:25 -0500 Received: from [140.186.70.92] (port=59650 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1NqTFL-0004Q4-GA for emacs-orgmode@gnu.org; Sat, 13 Mar 2010 10:27:24 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1NqTFJ-0007jO-Dd for emacs-orgmode@gnu.org; Sat, 13 Mar 2010 10:27:23 -0500 Received: from mail01.solnet.ch ([212.101.4.135]:53641) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1NqTFJ-0007iq-4V for emacs-orgmode@gnu.org; Sat, 13 Mar 2010 10:27:21 -0500 List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org To: Carsten Dominik Cc: Org Mode Hi Carsten, hi all 1) field coordinates: As a proposal I implemented the following to cover one of my spreadsheet use cases: Why not let `@#' and `$#' in Calc formulas (works also for Lisp formulas) be substituted to the row or column number of the formula result field?. The traditional Lisp formula equivalents are org-table-current-dline and org-table-current-column. I believe it does not break the TBLFM syntax for any other use. My use case is an overview with the average annual relative changes of a time series. Here is an example with averages for a history of 1 year up to 4 years: | year | quote | 1 a | 2 a | 3 a | 4 a | |------+-------+-------+-------+-------+-------| | 2005 | 10 | | | | | | 2006 | 12 | 0.200 | | | | | 2007 | 14 | 0.167 | 0.183 | | | | 2008 | 16 | 0.143 | 0.155 | 0.170 | | | 2009 | 18 | 0.125 | 0.134 | 0.145 | 0.158 | #+TBLFM: $3 = if(@# + 1 > $#, ($2 / subscr(@-I$2..@+I$2, @# + 1 - $#)) ^ (1 / ($# - 2)) - 1, string("")); f3 :: $4 = if(@# + 1 > $#, ($2 / subscr(@-I$2..@+I$2, @# + 1 - $#)) ^ (1 / ($# - 2)) - 1, string("")); f3 :: $5 = if(@# + 1 > $#, ($2 / subscr(@-I$2..@+I$2, @# + 1 - $#)) ^ (1 / ($# - 2)) - 1, string("")); f3 :: $6 = if(@# + 1 > $#, ($2 / subscr(@-I$2..@+I$2, @# + 1 - $#)) ^ (1 / ($# - 2)) - 1, string("")); f3 The patch (the files with `---' were taken from org-version 6.34c): ====================================================================== --- a/doc/org.texi +++ b/doc/org.texi @@ -2098,6 +2098,21 @@ table in that entry. REF is an absolute described above for example @code{@@3$3} or @code{$somename}, valid in the referenced table. +@subsubheading Field coordinates +@cindex field coordinates +@cindex coordinates, of field +@cindex row, of field coordinates +@cindex column, of field coordinates + +For Calc formulas and Lisp formulas @code{@@#} and @code{$#} can be used to +get the row or column number of the field where the formula result goes. +The traditional Lisp formula equivalents are @code{org-table-current-dline} +and @code{org-table-current-column}. Example: + +@example +if(@@# % 2, $#, string("")) @r{column number on odd lines only} +@end example + @node Formula syntax for Calc, Formula syntax for Lisp, References, The spreadsheet @subsection Formula syntax for Calc @cindex formula syntax, Calc --- a/lisp/org-table.el +++ b/lisp/org-table.el @@ -2243,6 +2243,21 @@ not overwrite the stored one." (setq form (copy-sequence formula) lispp (and (> (length form) 2)(equal (substring form 0 2) "'("))) (if (and lispp literal) (setq lispp 'literal)) + + ;; Insert row number of formula result field + (while (string-match "\\@#" form) + (setq form + (replace-match + (save-match-data + (format "%d" (org-table-current-dline))) + t t form))) + ;; Insert column number of formula result field + (while (string-match "\\$#" form) + (setq form + (replace-match + (save-match-data + (format "%d" (org-table-current-column))) + t t form))) ;; Check for old vertical references (setq form (org-table-rewrite-old-row-references form)) ;; Insert remote references ====================================================================== 2) self-edited multi line TBLFM with comments: For me it would be great to have the now missing option to hack all the formulas myself just directly, but rather into a multi line TBLFM with comments than into the one line #+TBLFM:. For the use case above this would look like: [...] | 2009 | 18 | 0.125 | 0.134 | 0.145 | 0.158 | #+BEGIN_TBLFM $3 = if(@# + 1 > $#, ($2 / subscr(@-I$2..@+I$2, @# + 1 - $#)) ^ (1 / ($# - 2)) - 1, string("")); f3 :: # rel. change for 1 year $4 = if(@# + 1 > $#, ($2 / subscr(@-I$2..@+I$2, @# + 1 - $#)) ^ (1 / ($# - 2)) - 1, string("")); f3 :: # average for 2 years $5 = if(@# + 1 > $#, ($2 / subscr(@-I$2..@+I$2, @# + 1 - $#)) ^ (1 / ($# - 2)) - 1, string("")); f3 :: # average for 3 years $6 = if(@# + 1 > $#, ($2 / subscr(@-I$2..@+I$2, @# + 1 - $#)) ^ (1 / ($# - 2)) - 1, string("")); f3 # average for 4 years #+END_TBLFM I suggest to leave the one line #+TBLFM without the comment possibility to avoid issues with the very nice write back to #+TBLFM when editing with e. g. `C-c =' or moving rows and columns. In favor of a complexity reduction and to avoid confusion I suggest to leave the #+BEGIN_TBLFM option without write back and to unconditionally reject a trial to do it. Similar to the nice reject when trying to edit column 1 with `C-c =' in the following example, where #+TBLFM has been upset by self-editing it: | 0 | #+TBLFM: $1 = 0 :: $1 = 0 This way the implementation for the multi line TBLFM with comments could on evaluation simply strip the comments from all the lines between #+BEGIN_TBLFM and #+END_TBLFM, join the rest of these lines into one line and pass it to where the #+TBLFM: content is passed today. Of course there would still be more to do to make the whole work. Surprise: #+BEGIN_TBLFM already folds by TAB without implementing anything yet. The TBLFM comments should not be parsed as `#' but rather ` #' in order to not break a) the new field coordinates `@#' and `$#' if done as in my proposal above b) the Calc input radix Example: | (1, 1) | (1, 2) | 256 | #+BEGIN_TBLFM $1 = (@#, $#) :: $2 = (@#, $#) :: # a) numbers of row and column $3 = 16#100 # b) Calc input radix with hash char #+END_TBLFM I'm not sure if adding a regexp for multi line TBLFM comments to some face for highlighting would make too much trouble with breaking other stuff containing ` #' outside multi line TBLFM. How easy would that be to implement? Michael