From cefc480f4e207a3d2bc9478a916b2783f6da3346 Mon Sep 17 00:00:00 2001 From: af867c30e46f4b444ec768838323b91d Date: Sat, 6 Jun 2020 10:34:27 +0000 Subject: [PATCH] Update toy_document_orgmode_R_en.org --- module2/exo1/toy_document_orgmode_R_en.org | 74 ++-------------------- 1 file changed, 6 insertions(+), 68 deletions(-) diff --git a/module2/exo1/toy_document_orgmode_R_en.org b/module2/exo1/toy_document_orgmode_R_en.org index 2b73d64..b0162eb 100644 --- a/module2/exo1/toy_document_orgmode_R_en.org +++ b/module2/exo1/toy_document_orgmode_R_en.org @@ -1,8 +1,6 @@ -#+TITLE: Your title -#+AUTHOR: Your name -#+DATE: Today's date +#+TITLE: On the computation of pi + #+LANGUAGE: en -# #+PROPERTY: header-args :eval never-export #+HTML_HEAD: #+HTML_HEAD: @@ -11,71 +9,11 @@ #+HTML_HEAD: #+HTML_HEAD: -* Some explanations - -This is an org-mode document with code examples in R. Once opened in -Emacs, this document can easily be exported to HTML, PDF, and Office -formats. For more information on org-mode, see -https://orgmode.org/guide/. - -When you type the shortcut =C-c C-e h o=, this document will be -exported as HTML. All the code in it will be re-executed, and the -results will be retrieved and included into the exported document. If -you do not want to re-execute all code each time, you can delete the # -and the space before ~#+PROPERTY:~ in the header of this document. - -Like we showed in the video, R code is included as follows (and is -exxecuted by typing ~C-c C-c~): +#+PROPERTY: header-args :session :exports both -#+begin_src R :results output :exports both -print("Hello world!") -#+end_src - -#+RESULTS: -: [1] "Hello world!" - -And now the same but in an R session. This is the most frequent -situation, because R is really an interactive language. With a -session, R's state, i.e. the values of all the variables, remains -persistent from one code block to the next. The code is still executed -using ~C-c C-c~. +* Asking the maths library +My computer tells me that $\pi$ is /approximatively/ #+begin_src R :results output :session *R* :exports both -summary(cars) +pi #+end_src - -#+RESULTS: -: speed dist -: Min. : 4.0 Min. : 2.00 -: 1st Qu.:12.0 1st Qu.: 26.00 -: Median :15.0 Median : 36.00 -: Mean :15.4 Mean : 42.98 -: 3rd Qu.:19.0 3rd Qu.: 56.00 -: Max. :25.0 Max. :120.00 - -Finally, an example for graphical output: -#+begin_src R :results output graphics :file "./cars.png" :exports results :width 600 :height 400 :session *R* -plot(cars) -#+end_src - -#+RESULTS: -[[file:./cars.png]] - -Note the parameter ~:exports results~, which indicates that the code -will not appear in the exported document. We recommend that in the -context of this MOOC, you always leave this parameter setting as -~:exports both~, because we want your analyses to be perfectly -transparent and reproducible. - -Watch out: the figure generated by the code block is /not/ stored in -the org document. It's a plain file, here named ~cars.png~. You have -to commit it explicitly if you want your analysis to be legible and -understandable on GitLab. - -Finally, don't forget that we provide in the resource section of this -MOOC a configuration with a few keyboard shortcuts that allow you to -quickly create code blocks in R by typing ~