From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Eric Schulte" Subject: Proposed New Syntax For Calling Code Blocks was: Problem with Babel and sessions Date: Fri, 10 Sep 2010 12:06:47 -0600 Message-ID: <87vd6deafb.fsf@gmail.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from [140.186.70.92] (port=57934 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Ou84C-00030s-Ez for emacs-orgmode@gnu.org; Fri, 10 Sep 2010 14:11:17 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1Ou84B-00042K-0f for emacs-orgmode@gnu.org; Fri, 10 Sep 2010 14:11:16 -0400 Received: from mail-yx0-f169.google.com ([209.85.213.169]:51343) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1Ou84A-00042F-Qk for emacs-orgmode@gnu.org; Fri, 10 Sep 2010 14:11:14 -0400 Received: by yxk8 with SMTP id 8so1669212yxk.0 for ; Fri, 10 Sep 2010 11:11:14 -0700 (PDT) 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: Christopher Witte Cc: Org Mode Hi Christopher, Thanks for the well documented example. The header arguments on the call line, are actually being used by the call line itself, not by the R block which is called. To unpack that, on evaluation the call line expands to a trivial emacs-lisp code block which is equivalent to #+begin_src emacs-lisp :var results=chartPolAngle(pol=tableTestBabel) :session testBabel:file results #+end_src So the :session header argument is used by the emacs-lisp code block in the call line, and never propagates to the R code block which is evaluated. Notice that header arguments like :results silent, will have the expected results. So for now you will have to place the header argument on the actual R code block. That said, I think that we should provide a mechanism for passing header arguments through to called code blocks making the original functionality you described possible. I'm not sure how best to do that, but currently I think we should expand the syntax used to call code blocks to be more similar to inline code blocks, s.t. header arguments can be placed inside of an optional square bracket section between the name of the code block and the arguments. Using this new proposed syntax your example below would be written as #+call: chartPolAngle[:session testBabel :file testBabel.pdf](pol=tableTestBabel) I'd be interested to hear what the community thinks of this new syntax. As an unrelated note, we also need to think of a natural way to allow the header argument portion of a code block to span multiple lines. Best -- Eric Christopher Witte writes: > I'm having a bit of trouble with org bable and R. When I try to execute the > code below (C-c C-c on the call line), as you can see, I get the results > :nil > > --------------------------------------- > #+tblname: tableTestBabel > | 0 | 4.40 | > | 30 | 4.54 | > | 60 | 7.09 | > | 90 | 9.40 | > | 120 | 9.22 | > | 150 | 6.65 | > | 180 | 4.22 | > > #+srcname: chartPolAngle(pol) > #+begin_src R > angle <- pol[,1] > energy <- pol[,2] > plot(angle,energy) > energy.model <- nls (energy ~ a1 + a2 * (sin(pi / a3 *(angle-a4)))^2, > start=list(a1=3.0, a2=7.0, a3=180, a4=0.0)) > lines(spline(angle, fitted.values(energy.model)), lwd=2) > summary(energy.model) > #+end_src > > #+call: chartPolAngle(pol=tableTestBabel) :session testBabel :file testBabel.pdf > > #+results: chartPolAngle(pol=tableTestBabel) > : nil > ------------------------------------ > > but If I move the header arguments to the source block, as in the code > below, everything works fine. I also get asked "ESS [S(R): R] starting data > directory? ~/doc/org/" which I don't get with the code above. > > --------------------------------------- > #+tblname: tableTestBabel > | 0 | 4.40 | > | 30 | 4.54 | > | 60 | 7.09 | > | 90 | 9.40 | > | 120 | 9.22 | > | 150 | 6.65 | > | 180 | 4.22 | > > #+call: chartPolAngle(pol=tableTestBabel) > > #+results: chartPolAngle(pol=tableTestBabel) > : testBabel.pdf > > > #+srcname: chartPolAngle(pol) > #+begin_src R :session testBabel :file testBabel.pdf > angle <- pol[,1] > energy <- pol[,2] > plot(angle,energy) > energy.model <- nls (energy ~ a1 + a2 * (sin(pi / a3 *(angle-a4)))^2, > start=list(a1=3.0, a2=7.0, a3=180, a4=0.0)) > lines(spline(angle, fitted.values(energy.model)), lwd=2) > summary(energy.model) > #+end_src > --------------------------------------- > > Org doesn't appear to respect the head arguments on the call. I pulled from > git a couple days ago. Any ideas why? > > Cheers > Chris Witte > _______________________________________________ > Emacs-orgmode mailing list > Please use `Reply All' to send replies to the list. > Emacs-orgmode@gnu.org > http://lists.gnu.org/mailman/listinfo/emacs-orgmode