From: "Cook, Malcolm" <MEC@stowers.org>
To: "'Charles C. Berry'" <ccberry@ucsd.edu>
Cc: "emacs-orgmode@gnu.org" <emacs-orgmode@gnu.org>
Subject: Re: BUG: emacs orgmode ob-R.el function org-babel-R-evaluate-session over aggressively performs "; ; cleanup extra prompts left in output" and a possible workaround
Date: Mon, 9 Nov 2015 20:04:38 +0000 [thread overview]
Message-ID: <39f0e21eec95434b95514837a7ccb71f@exchsrv2.sgc.loc> (raw)
In-Reply-To: <alpine.OSX.2.20.1511071612320.3906@charles-berrys-macbook.local>
> -----Original Message-----
> From: Charles C. Berry [mailto:ccberry@ucsd.edu]
> Sent: Saturday, November 07, 2015 6:33 PM
> To: Cook, Malcolm <MEC@stowers.org>
> Cc: emacs-orgmode@gnu.org
> Subject: Re: BUG: emacs orgmode ob-R.el function org-babel-R-evaluate-
> session over aggressively performs "; ; cleanup extra prompts left in output"
> and a possible workaround
>
> On Sat, 7 Nov 2015, Cook, Malcolm wrote:
>
> > Thanks Chuck for setting this through.
> >
> [...]
> >
> > I've wondered if there is not a better way for Babel to share an
> > interactive session with the user. For instance, if we wanted to
> > support a new form of results processing on addition to value and
> > output.... Namely, "transcript", wherein the results of evaluating a
> > source block would be a transcript of the season with statements
> > interwoven with their respective outputs.... I suspect that this would
> > not be easy extension of the current approach since it would require
> > parsing the source into statements that get evaluated sequentially with
> > visible results echoed into the transcript.
>
> You can do stuff like this using babel and some R code.
>
> Here is a start:
>
> --8<---------------cut here---------------start------------->8---
> #+NAME: my-block
> #+BEGIN_SRC R :eval no
> ls()
> a <- 1
> sqrt(a+2)
> ls()
> #+END_SRC
>
>
> #+BEGIN_SRC R :session :noweb yes :results value raw :wrap example
> capture.output(
> source(textConnection("
> <<my-block>>
> "),
> echo=T,print=T))
> #+END_SRC
>
> #+RESULTS:
> #+BEGIN_example
>
> > ls()
> [1] "a"
>
> > a <- 1
>
> > sqrt(a+2)
> [1] 1.732051
>
> > ls()
> [1] "a"
> #+END_example
>
>
> --8<---------------cut here---------------end--------------->8---
>
> I suppose you would want `:exports results'.
Hi Chuck,
Sourcing a textConnection on a :noweb interpolated block will not handle embedded quotes in the source block correctly. Adding an assignment of a string to a variable in my-block reveals this (i.e. `b<-"asdf"`)
Nor does it extend to my underspecified conception of what :transcript output would be. I intended that :transcript would generate a colorized source blocks separated by results for statements which generated visible results. You implementation makes the source and results undifferentiated. My mistake for underspecifying my intention. I think I might be able to cobble what I want using the 'evaluate' package (https://cran.rstudio.com/web/packages/evaluate/evaluate.pdf) with an output handler to format source as an R code block and results as R results block. Probably not worth the effort. Or rather, probably already done within the knitr/rmarkdown.
Thanks,
Malcolm
>
> Best,
> Chuck
next prev parent reply other threads:[~2015-11-09 20:04 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-01 19:59 BUG: emacs orgmode ob-R.el function org-babel-R-evaluate-session over aggressively performs "; ; cleanup extra prompts left in output" and a possible workaround Cook, Malcolm
2015-10-01 21:56 ` Charles C. Berry
2015-10-01 23:15 ` Cook, Malcolm
2015-10-08 19:24 ` Charles C. Berry
2015-10-08 20:41 ` Cook, Malcolm
2015-11-05 12:57 ` Nicolas Goaziou
2015-11-06 23:11 ` Charles C. Berry
2015-11-07 21:30 ` Charles C. Berry
2015-11-07 21:41 ` Nicolas Goaziou
2015-11-07 23:22 ` Cook, Malcolm
2015-11-08 0:32 ` Charles C. Berry
2015-11-09 20:04 ` Cook, Malcolm [this message]
2015-11-09 20:56 ` Charles C. Berry
2015-11-09 22:11 ` Cook, Malcolm
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