Move the library-of-babel.org to Worg
This commit is contained in:
Bastien
parent
b14bff3ba5
commit
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@ -1,584 +0,0 @@
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#+title: The Library of Babel
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#+author: Org-mode People
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#+STARTUP: hideblocks
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* Introduction
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The Library of Babel is an extensible collection of ready-made and
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easily-shortcut-callable source-code blocks for handling common tasks.
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Org-babel comes pre-populated with the source-code blocks located in
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this file. It is possible to add source-code blocks from any org-mode
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file to the library by calling =(org-babel-lob-ingest
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"path/to/file.org")=.
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This file is included in worg mainly less for viewing through the web
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interface, and more for contribution through the worg git repository.
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If you have code snippets that you think others may find useful please
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add them to this file and [[file:~/src/worg/worg-git.org::contribute-to-worg][contribute them]] to worg.
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The raw Org-mode text of this file can be downloaded at
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[[repofile:contrib/babel/library-of-babel.org][library-of-babel.org]]
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* Simple
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A collection of simple utility functions:
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#+name: echo
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#+begin_src emacs-lisp :var input="echo'd"
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input
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#+end_src
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* File I/O
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** Reading and writing files
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Read the contents of the file at =file=. The =:results vector= and
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=:results scalar= header arguments can be used to read the contents of
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file as either a table or a string.
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#+name: read
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#+begin_src emacs-lisp :var file="" :var format=""
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(if (string= format "csv")
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(with-temp-buffer
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(org-table-import (expand-file-name file) nil)
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(org-table-to-lisp))
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(with-temp-buffer
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(insert-file-contents (expand-file-name file))
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(buffer-string)))
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#+end_src
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Write =data= to a file at =file=. If =data= is a list, then write it
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as a table in traditional Org-mode table syntax.
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#+name: write
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#+begin_src emacs-lisp :var data="" :var file="" :var ext='()
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(flet ((echo (r) (if (stringp r) r (format "%S" r))))
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(with-temp-file file
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(case (and (listp data)
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(or ext (intern (file-name-extension file))))
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('tsv (insert (orgtbl-to-tsv data '(:fmt echo))))
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('csv (insert (orgtbl-to-csv data '(:fmt echo))))
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(t (org-babel-insert-result data)))))
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nil
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#+end_src
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** Remote files
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*** json
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Read local or remote file in [[http://www.json.org/][json]] format into emacs-lisp objects.
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#+name: json
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#+begin_src emacs-lisp :var file='() :var url='()
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(require 'json)
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(cond
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(file
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(org-babel-with-temp-filebuffer file
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(goto-char (point-min))
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(json-read)))
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(url
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(require 'w3m)
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(with-temp-buffer
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(w3m-retrieve url)
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(goto-char (point-min))
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(json-read))))
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#+end_src
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*** Google docs
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The following code blocks make use of the [[http://code.google.com/p/googlecl/][googlecl]] Google command line
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tool. This tool provides functionality for accessing Google services
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from the command line, and the following code blocks use /googlecl/
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for reading from and writing to Google docs with Org-mode code blocks.
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**** Read a document from Google docs
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The =google= command seems to be throwing "Moved Temporarily" errors
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when trying to download textual documents, but this is working fine
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for spreadsheets.
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#+name: gdoc-read
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#+begin_src emacs-lisp :var title="example" :var format="csv"
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(let* ((file (concat title "." format))
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(cmd (format "google docs get --format %S --title %S" format title)))
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(message cmd) (message (shell-command-to-string cmd))
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(prog1 (if (string= format "csv")
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(with-temp-buffer
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(org-table-import (shell-quote-argument file) '(4))
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(org-table-to-lisp))
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(with-temp-buffer
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(insert-file-contents (shell-quote-argument file))
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(buffer-string)))
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(delete-file file)))
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#+end_src
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For example, a line like the following can be used to read the
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contents of a spreadsheet named =num-cells= into a table.
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: #+call: gdoc-read(title="num-cells"")
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A line like the following can be used to read the contents of a
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document as a string.
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: #+call: gdoc-read(title="loremi", :format "txt")
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**** Write a document to a Google docs
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Write =data= to a google document named =title=. If =data= is tabular
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it will be saved to a spreadsheet, otherwise it will be saved as a
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normal document.
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#+name: gdoc-write
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#+begin_src emacs-lisp :var title="babel-upload" :var data=fibs(n=10) :results silent
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(let* ((format (if (listp data) "csv" "txt"))
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(tmp-file (make-temp-file "org-babel-google-doc" nil (concat "." format)))
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(cmd (format "google docs upload --title %S %S" title tmp-file)))
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(with-temp-file tmp-file
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(insert
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(if (listp data)
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(orgtbl-to-csv
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data '(:fmt (lambda (el) (if (stringp el) el (format "%S" el)))))
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(if (stringp data) data (format "%S" data)))))
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(message cmd)
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(prog1 (shell-command-to-string cmd) (delete-file tmp-file)))
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#+end_src
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example usage
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: #+name: fibs
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: #+begin_src emacs-lisp :var n=8
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: (flet ((fib (m) (if (< m 2) 1 (+ (fib (- m 1)) (fib (- m 2))))))
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: (mapcar (lambda (el) (list el (fib el))) (number-sequence 0 (- n 1))))
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: #+end_src
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:
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: #+call: gdoc-write(title="fibs", data=fibs(n=10))
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* Plotting code
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** R
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Plot column 2 (y axis) against column 1 (x axis). Columns 3 and
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beyond, if present, are ignored.
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#+name: R-plot
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#+begin_src R :var data=R-plot-example-data
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plot(data)
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#+end_src
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#+tblname: R-plot-example-data
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| 1 | 2 |
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| 2 | 4 |
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| 3 | 9 |
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| 4 | 16 |
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| 5 | 25 |
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#+call: R-plot(data=R-plot-example-data)
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#+resname: R-plot(data=R-plot-example-data)
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: nil
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** Gnuplot
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* Org reference
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** Headline references
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#+name: headline
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#+begin_src emacs-lisp :var headline=top :var file='()
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(save-excursion
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(when file (get-file-buffer file))
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(org-open-link-from-string (org-make-link-string headline))
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(save-restriction
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(org-narrow-to-subtree)
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(buffer-string)))
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#+end_src
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#+call: headline(headline="headline references")
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* Tables
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** LaTeX Table Export
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*** booktabs
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This source block can be used to wrap a table in the latex =booktabs=
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environment. The source block adds a =toprule= and =bottomrule= (so
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don't use =hline= at the top or bottom of the table). The =hline=
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after the header is replaced with a =midrule=.
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Note that this function bypasses the Org-mode LaTeX exporter and calls
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=orgtbl-to-generic= to create the output table. This means that the
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entries in the table are not translated from Org-mode to LaTeX.
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It takes the following arguments -- all but the first two are
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optional.
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| arg | description |
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|-------+--------------------------------------------|
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| table | a reference to the table |
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| align | alignment string |
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| env | optional environment, default to "tabular" |
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| width | optional width specification string |
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#+name: booktabs
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#+begin_src emacs-lisp :var table='((:head) hline (:body)) :var align='() :var env="tabular" :var width='() :noweb yes :results latex
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(flet ((to-tab (tab)
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(orgtbl-to-generic
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(mapcar (lambda (lis)
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(if (listp lis)
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(mapcar (lambda (el)
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(if (stringp el)
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el
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(format "%S" el))) lis)
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lis)) tab)
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(list :lend " \\\\" :sep " & " :hline "\\hline"))))
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(org-fill-template
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"
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\\begin{%env}%width%align
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\\toprule
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%table
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\\bottomrule
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\\end{%env}\n"
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(list
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(cons "env" (or env "table"))
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(cons "width" (if width (format "{%s}" width) ""))
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(cons "align" (if align (format "{%s}" align) ""))
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(cons "table"
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;; only use \midrule if it looks like there are column headers
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(if (equal 'hline (second table))
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(concat (to-tab (list (first table)))
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"\n\\midrule\n"
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(to-tab (cddr table)))
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(to-tab table))))))
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#+end_src
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*** longtable
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This block can be used to wrap a table in the latex =longtable=
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environment, it takes the following arguments -- all but the first two
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are optional.
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| arg | description |
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|-----------+-------------------------------------------------------------|
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| table | a reference to the table |
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| align | optional alignment string |
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| width | optional width specification string |
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| hline | the string to use as hline separator, defaults to "\\hline" |
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| head | optional "head" string |
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| firsthead | optional "firsthead" string |
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| foot | optional "foot" string |
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| lastfoot | optional "lastfoot" string |
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#+name: longtable
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#+begin_src emacs-lisp :var table='((:table)) :var align='() :var width='() :var hline="\\hline" :var firsthead='() :var head='() :var foot='() :var lastfoot='() :noweb yes :results latex
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(org-fill-template
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"
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\\begin{longtable}%width%align
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%firsthead
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%head
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%foot
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%lastfoot
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%table
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\\end{longtable}\n"
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(list
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(cons "width" (if width (format "{%s}" width) ""))
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(cons "align" (if align (format "{%s}" align) ""))
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(cons "firsthead" (if firsthead (concat firsthead "\n\\endfirsthead\n") ""))
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(cons "head" (if head (concat head "\n\\endhead\n") ""))
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(cons "foot" (if foot (concat foot "\n\\endfoot\n") ""))
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(cons "lastfoot" (if lastfoot (concat lastfoot "\n\\endlastfoot\n") ""))
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(cons "table" (orgtbl-to-generic
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(mapcar (lambda (lis)
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(if (listp lis)
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(mapcar (lambda (el)
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(if (stringp el)
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el
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(format "%S" el))) lis)
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lis)) table)
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(list :lend " \\\\" :sep " & " :hline hline)))))
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#+end_src
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*** booktabs-notes
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This source block builds on [[booktabs]]. It accepts two additional
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arguments, both of which are optional.
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#+tblname: arguments
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| arg | description |
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|--------+------------------------------------------------------|
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| notes | an org-mode table with footnotes |
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| lspace | if non-nil, insert =addlinespace= after =bottomrule= |
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An example footnote to the =arguments= table specifies the column
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span. Note the use of LaTeX, rather than Org-mode, markup.
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#+tblname: arguments-notes
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| \multicolumn{2}{l}{This is a footnote to the \emph{arguments} table.} |
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#+name: booktabs-notes
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#+begin_src emacs-lisp :var table='((:head) hline (:body)) :var notes='() :var align='() :var env="tabular" :var width='() :var lspace='() :noweb yes :results latex
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(flet ((to-tab (tab)
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(orgtbl-to-generic
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(mapcar (lambda (lis)
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(if (listp lis)
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(mapcar (lambda (el)
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(if (stringp el)
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el
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(format "%S" el))) lis)
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lis)) tab)
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(list :lend " \\\\" :sep " & " :hline "\\hline"))))
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(org-fill-template
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"
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\\begin{%env}%width%align
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\\toprule
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%table
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\\bottomrule%spacer
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%notes
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\\end{%env}\n"
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(list
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(cons "env" (or env "table"))
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(cons "width" (if width (format "{%s}" width) ""))
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(cons "align" (if align (format "{%s}" align) ""))
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(cons "spacer" (if lspace "\\addlinespace" ""))
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(cons "table"
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;; only use \midrule if it looks like there are column headers
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(if (equal 'hline (second table))
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(concat (to-tab (list (first table)))
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"\n\\midrule\n"
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(to-tab (cddr table)))
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(to-tab table)))
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(cons "notes" (if notes (to-tab notes) ""))
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)))
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#+end_src
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** Elegant lisp for transposing a matrix
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#+tblname: transpose-example
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| 1 | 2 | 3 |
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| 4 | 5 | 6 |
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#+name: transpose
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#+begin_src emacs-lisp :var table=transpose-example
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(apply #'mapcar* #'list table)
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#+end_src
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#+resname:
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| 1 | 4 |
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| 2 | 5 |
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| 3 | 6 |
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** Convert every element of a table to a string
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#+tblname: hetero-table
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| 1 | 2 | 3 |
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| a | b | c |
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#+name: all-to-string
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#+begin_src emacs-lisp :var tbl='()
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(defun all-to-string (tbl)
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(if (listp tbl)
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(mapcar #'all-to-string tbl)
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(if (stringp tbl)
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tbl
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(format "%s" tbl))))
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(all-to-string tbl)
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#+end_src
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||||
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#+begin_src emacs-lisp :var tbl=hetero-table
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(mapcar (lambda (row) (mapcar (lambda (cell) (stringp cell)) row)) tbl)
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#+end_src
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||||
|
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#+name:
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||||
| nil | nil | nil |
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||||
| t | t | t |
|
||||
|
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#+begin_src emacs-lisp :var tbl=all-to-string(hetero-table)
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(mapcar (lambda (row) (mapcar (lambda (cell) (stringp cell)) row)) tbl)
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#+end_src
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||||
#+name:
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||||
| t | t | t |
|
||||
| t | t | t |
|
||||
|
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* Misc
|
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|
||||
** File-specific Version Control logging
|
||||
:PROPERTIES:
|
||||
:AUTHOR: Luke Crook
|
||||
:END:
|
||||
|
||||
This function will attempt to retrieve the entire commit log for the
|
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file associated with the current buffer and insert this log into the
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export. The function uses the Emacs VC commands to interface to the
|
||||
local version control system, but has only been tested to work with
|
||||
Git. 'limit' is currently unsupported.
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|
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#+name: vc-log
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#+headers: :var limit=-1
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#+headers: :var buf=(buffer-name (current-buffer))
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#+begin_src emacs-lisp
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;; Most of this code is copied from vc.el vc-print-log
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||||
(require 'vc)
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||||
(when (vc-find-backend-function
|
||||
(vc-backend (buffer-file-name (get-buffer buf))) 'print-log)
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||||
(let ((limit -1)
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||||
(vc-fileset nil)
|
||||
(backend nil)
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||||
(files nil))
|
||||
(with-current-buffer (get-buffer buf)
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(setq vc-fileset (vc-deduce-fileset t)) ; FIXME: Why t? --Stef
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(setq backend (car vc-fileset))
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(setq files (cadr vc-fileset)))
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(with-temp-buffer
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(let ((status (vc-call-backend
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||||
backend 'print-log files (current-buffer))))
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||||
(when (and (processp status) ; Make sure status is a process
|
||||
(= 0 (process-exit-status status))) ; which has not terminated
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||||
(while (not (eq 'exit (process-status status)))
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||||
(sit-for 1 t)))
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||||
(buffer-string)))))
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||||
#+end_src
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||||
|
||||
** Trivial python code blocks
|
||||
|
||||
#+name: python-identity
|
||||
#+begin_src python :var a=1
|
||||
a
|
||||
#+end_src
|
||||
|
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#+name: python-add
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||||
#+begin_src python :var a=1 :var b=2
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||||
a + b
|
||||
#+end_src
|
||||
|
||||
** Arithmetic
|
||||
|
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#+name: lob-add
|
||||
#+begin_src emacs-lisp :var a=0 :var b=0
|
||||
(+ a b)
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||||
#+end_src
|
||||
|
||||
#+name: lob-minus
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||||
#+begin_src emacs-lisp :var a=0 :var b=0
|
||||
(- a b)
|
||||
#+end_src
|
||||
|
||||
#+name: lob-times
|
||||
#+begin_src emacs-lisp :var a=0 :var b=0
|
||||
(* a b)
|
||||
#+end_src
|
||||
|
||||
#+name: lob-div
|
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#+begin_src emacs-lisp :var a=0 :var b=0
|
||||
(/ a b)
|
||||
#+end_src
|
||||
|
||||
* GANTT Charts
|
||||
|
||||
The =elispgantt= source block was sent to the mailing list by Eric
|
||||
Fraga. It was modified slightly by Tom Dye.
|
||||
|
||||
#+name: elispgantt
|
||||
#+begin_src emacs-lisp :var table=gantttest
|
||||
(let ((dates "")
|
||||
(entries (nthcdr 2 table))
|
||||
(milestones "")
|
||||
(nmilestones 0)
|
||||
(ntasks 0)
|
||||
(projecttime 0)
|
||||
(tasks "")
|
||||
(xlength 1))
|
||||
(message "Initial: %s\n" table)
|
||||
(message "Entries: %s\n" entries)
|
||||
(while entries
|
||||
(let ((entry (first entries)))
|
||||
(if (listp entry)
|
||||
(let ((id (first entry))
|
||||
(type (nth 1 entry))
|
||||
(label (nth 2 entry))
|
||||
(task (nth 3 entry))
|
||||
(dependencies (nth 4 entry))
|
||||
(start (nth 5 entry))
|
||||
(duration (nth 6 entry))
|
||||
(end (nth 7 entry))
|
||||
(alignment (nth 8 entry)))
|
||||
(if (> start projecttime) (setq projecttime start))
|
||||
(if (string= type "task")
|
||||
(let ((end (+ start duration))
|
||||
(textposition (+ start (/ duration 2)))
|
||||
(flush ""))
|
||||
(if (string= alignment "left")
|
||||
(progn
|
||||
(setq textposition start)
|
||||
(setq flush "[left]"))
|
||||
(if (string= alignment "right")
|
||||
(progn
|
||||
(setq textposition end)
|
||||
(setq flush "[right]"))))
|
||||
(setq tasks
|
||||
(format "%s \\gantttask{%s}{%s}{%d}{%d}{%d}{%s}\n"
|
||||
tasks label task start end textposition flush))
|
||||
(setq ntasks (+ 1 ntasks))
|
||||
(if (> end projecttime)
|
||||
(setq projecttime end)))
|
||||
(if (string= type "milestone")
|
||||
(progn
|
||||
(setq milestones
|
||||
(format
|
||||
"%s \\ganttmilestone{$\\begin{array}{c}\\mbox{%s}\\\\ \\mbox{%s}\\end{array}$}{%d}\n"
|
||||
milestones label task start))
|
||||
(setq nmilestones (+ 1 nmilestones)))
|
||||
(if (string= type "date")
|
||||
(setq dates (format "%s \\ganttdateline{%s}{%d}\n"
|
||||
dates label start))
|
||||
(message "Ignoring entry with type %s\n" type)))))
|
||||
(message "Ignoring non-list entry %s\n" entry)) ; end if list entry
|
||||
(setq entries (cdr entries)))) ; end while entries left
|
||||
(format "\\pgfdeclarelayer{background}
|
||||
\\pgfdeclarelayer{foreground}
|
||||
\\pgfsetlayers{background,foreground}
|
||||
\\renewcommand{\\ganttprojecttime}{%d}
|
||||
\\renewcommand{\\ganttntasks}{%d}
|
||||
\\noindent
|
||||
\\begin{tikzpicture}[y=-0.75cm,x=0.75\\textwidth]
|
||||
\\begin{pgfonlayer}{background}
|
||||
\\draw[very thin, red!10!white] (0,1+\\ganttntasks) grid [ystep=0.75cm,xstep=1/\\ganttprojecttime] (1,0);
|
||||
\\draw[\\ganttdatelinecolour] (0,0) -- (1,0);
|
||||
\\draw[\\ganttdatelinecolour] (0,1+\\ganttntasks) -- (1,1+\\ganttntasks);
|
||||
\\end{pgfonlayer}
|
||||
%s
|
||||
%s
|
||||
%s
|
||||
\\end{tikzpicture}" projecttime ntasks tasks milestones dates))
|
||||
#+end_src
|
||||
|
||||
* Available languages
|
||||
:PROPERTIES:
|
||||
:AUTHOR: Bastien
|
||||
:END:
|
||||
|
||||
** From Org's core
|
||||
|
||||
| Language | Identifier | Language | Identifier |
|
||||
|------------+------------+----------------+------------|
|
||||
| Asymptote | asymptote | Awk | awk |
|
||||
| Emacs Calc | calc | C | C |
|
||||
| C++ | C++ | Clojure | clojure |
|
||||
| CSS | css | ditaa | ditaa |
|
||||
| Graphviz | dot | Emacs Lisp | emacs-lisp |
|
||||
| gnuplot | gnuplot | Haskell | haskell |
|
||||
| Javascript | js | LaTeX | latex |
|
||||
| Ledger | ledger | Lisp | lisp |
|
||||
| Lilypond | lilypond | MATLAB | matlab |
|
||||
| Mscgen | mscgen | Objective Caml | ocaml |
|
||||
| Octave | octave | Org-mode | org |
|
||||
| | | Perl | perl |
|
||||
| Plantuml | plantuml | Python | python |
|
||||
| R | R | Ruby | ruby |
|
||||
| Sass | sass | Scheme | scheme |
|
||||
| GNU Screen | screen | shell | sh |
|
||||
| SQL | sql | SQLite | sqlite |
|
||||
|
||||
** From Org's contrib/babel/langs
|
||||
|
||||
- ob-oz.el, by Torsten Anders and Eric Schulte
|
||||
- ob-fomus.el, by Torsten Anders
|
||||
|
|
@ -2554,8 +2554,9 @@ manual for details.
|
|||
@subheading Library of Babel
|
||||
Use @kbd{C-c C-v l} to load the code blocks from an Org-mode files into the
|
||||
``Library of Babel'', these blocks can then be evaluated from any Org-mode
|
||||
buffer. A collection of generally useful code blocks is distributed with
|
||||
Org-mode in @code{contrib/library-of-babel.org}.
|
||||
buffer. A collection of generally useful code blocks is accessible through
|
||||
Org-mode’s community-driven documentation on
|
||||
@uref{http://orgmode.org/worg/libary-of-babel.html,Worg}.
|
||||
|
||||
@subheading Header Arguments
|
||||
Many aspects of the evaluation and export of code blocks are controlled
|
||||
|
|
|
|||
|
|
@ -408,10 +408,17 @@ Call ~org-agenda-set-restriction-lock~ from the agenda.
|
|||
|
||||
** Miscellaneous
|
||||
|
||||
*** The Library of Babel now on Worg
|
||||
|
||||
The library-of-babel.org used to be accessible from the =doc/=
|
||||
directory, distributed with Org’s core. It is now accessible
|
||||
from the Worg community-driven documentation [[http://orgmode.org/worg/library-of-babel.html][here]].
|
||||
|
||||
If you want to contribute to it, please see [[http://orgmode.org/worg/org-contribute.html][how to contribute]].
|
||||
|
||||
*** Allow multiple columns view
|
||||
|
||||
Columns view is not limited to a single buffer anymore.
|
||||
|
||||
*** Org Attach obeys ~dired-dwim-target~
|
||||
|
||||
When a Dired buffer is opened next to the Org document being edited,
|
||||
|
|
|
|||
Loading…
Reference in New Issue