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-;;; org-plot.el --- Support for plotting from Org-mode
-
-;; Copyright (C) 2008, 2009, 2010 Free Software Foundation, Inc.
-;;
-;; Author: Eric Schulte <schulte dot eric at gmail dot com>
-;; Keywords: tables, plotting
-;; Homepage: http://orgmode.org
-;; Version: 7.4
-;;
-;; This file is part of GNU Emacs.
-;;
-;; GNU Emacs is free software: you can redistribute it and/or modify
-;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation, either version 3 of the License, or
-;; (at your option) any later version.
-
-;; GNU Emacs is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-;; GNU General Public License for more details.
-
-;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
-
-;;; Commentary:
-
-;; Borrows ideas and a couple of lines of code from org-exp.el.
-
-;; Thanks to the org-mode mailing list for testing and implementation
-;; and feature suggestions
-
-;;; Code:
-(require 'org)
-(require 'org-exp)
-(require 'org-table)
-(eval-when-compile
-  (require 'cl))
-
-(declare-function gnuplot-delchar-or-maybe-eof "ext:gnuplot" (arg))
-(declare-function gnuplot-mode "ext:gnuplot" ())
-(declare-function gnuplot-send-buffer-to-gnuplot "ext:gnuplot" ())
-
-(defvar org-plot/gnuplot-default-options
-  '((:plot-type . 2d)
-    (:with . lines)
-    (:ind . 0))
-  "Default options to gnuplot used by `org-plot/gnuplot'.")
-
-(defvar org-plot-timestamp-fmt nil)
-
-(defun org-plot/add-options-to-plist (p options)
-  "Parse an OPTIONS line and set values in the property list P.
-Returns the resulting property list."
-  (let (o)
-    (when options
-      (let ((op '(("type"    . :plot-type)
-		  ("script"  . :script)
-		  ("line"    . :line)
-		  ("set"     . :set)
-		  ("title"   . :title)
-		  ("ind"     . :ind)
-		  ("deps"    . :deps)
-		  ("with"    . :with)
-		  ("file"    . :file)
-		  ("labels"  . :labels)
-		  ("map"     . :map)
-                  ("timeind" . :timeind)
-		  ("timefmt" . :timefmt)))
-	    (multiples '("set" "line"))
-	    (regexp ":\\([\"][^\"]+?[\"]\\|[(][^)]+?[)]\\|[^ \t\n\r;,.]*\\)")
-	    (start 0)
-	    o)
-	(while (setq o (pop op))
-	  (if (member (car o) multiples) ;; keys with multiple values
-	      (while (string-match
-		      (concat (regexp-quote (car o)) regexp)
-		      options start)
-		(setq start (match-end 0))
-		(setq p (plist-put p (cdr o)
-				   (cons (car (read-from-string
-					       (match-string 1 options)))
-					 (plist-get p (cdr o)))))
-		p)
-	    (if (string-match (concat (regexp-quote (car o)) regexp)
-			      options)
-		(setq p (plist-put p (cdr o)
-				   (car (read-from-string
-					 (match-string 1 options)))))))))))
-  p)
-
-(defun org-plot/goto-nearest-table ()
-  "Move the point forward to the beginning of nearest table.
-Return value is the point at the beginning of the table."
-  (interactive) (move-beginning-of-line 1)
-  (while (not (or (org-at-table-p) (< 0 (forward-line 1)))))
-  (goto-char (org-table-begin)))
-
-(defun org-plot/collect-options (&optional params)
-  "Collect options from an org-plot '#+Plot:' line.
-Accepts an optional property list PARAMS, to which the options
-will be added.  Returns the resulting property list."
-  (interactive)
-  (let ((line (thing-at-point 'line)))
-    (if (string-match "#\\+PLOT: +\\(.*\\)$" line)
-	(org-plot/add-options-to-plist params (match-string 1 line))
-      params)))
-
-(defun org-plot-quote-timestamp-field (s)
-  "Convert field S from timestamp to Unix time and export to gnuplot."
-  (format-time-string org-plot-timestamp-fmt (org-time-string-to-time s)))
-
-(defun org-plot-quote-tsv-field (s)
-  "Quote field S for export to gnuplot."
-  (if (string-match org-table-number-regexp s) s
-    (if (string-match org-ts-regexp3 s)
-	(org-plot-quote-timestamp-field s)
-      (concat "\"" (mapconcat 'identity (split-string s "\"") "\"\"") "\""))))
-
-(defun org-plot/gnuplot-to-data (table data-file params)
-  "Export TABLE to DATA-FILE in a format readable by gnuplot.
-Pass PARAMS through to `orgtbl-to-generic' when exporting TABLE."
-  (with-temp-file
-      data-file
-    (make-local-variable 'org-plot-timestamp-fmt)
-    (setq org-plot-timestamp-fmt (or
-				  (plist-get params :timefmt)
-				  "%Y-%m-%d-%H:%M:%S"))
-    (insert (orgtbl-to-generic
-	     table
-	     (org-combine-plists
-	      '(:sep "\t" :fmt org-plot-quote-tsv-field)
-	      params))))
-  nil)
-
-(defun org-plot/gnuplot-to-grid-data (table data-file params)
-  "Export the data in TABLE to DATA-FILE for gnuplot.
-This means in a format appropriate for grid plotting by gnuplot.
-PARAMS specifies which columns of TABLE should be plotted as independent
-and dependant variables."
-  (interactive)
-  (let* ((ind (- (plist-get params :ind) 1))
-	 (deps (if (plist-member params :deps)
-		   (mapcar (lambda (val) (- val 1)) (plist-get params :deps))
-		 (let (collector)
-		   (dotimes (col (length (first table)))
-		     (setf collector (cons col collector)))
-		   collector)))
-	 row-vals (counter 0))
-    (when (>= ind 0) ;; collect values of ind col
-      (setf row-vals (mapcar (lambda (row) (setf counter (+ 1 counter))
-			       (cons counter (nth ind row))) table)))
-    (when (or deps (>= ind 0)) ;; remove non-plotting columns
-      (setf deps (delq ind deps))
-      (setf table (mapcar (lambda (row)
-			    (dotimes (col (length row))
-			      (unless (memq col deps)
-				(setf (nth col row) nil)))
-			    (delq nil row))
-			  table)))
-    ;; write table to gnuplot grid datafile format
-    (with-temp-file data-file
-      (let ((num-rows (length table)) (num-cols (length (first table)))
-	    front-edge back-edge)
-	(flet ((gnuplot-row (col row value)
-			    (setf col (+ 1 col)) (setf row (+ 1 row))
-			    (format "%f  %f  %f\n%f  %f  %f\n"
-				    col (- row 0.5) value ;; lower edge
-				    col (+ row 0.5) value))) ;; upper edge
-	  (dotimes (col num-cols)
-	    (dotimes (row num-rows)
-	      (setf back-edge
-		    (concat back-edge
-			    (gnuplot-row (- col 1) row (string-to-number
-							(nth col (nth row table))))))
-	      (setf front-edge
-		    (concat front-edge
-			    (gnuplot-row col row (string-to-number
-						  (nth col (nth row table)))))))
-	    ;; only insert once per row
-	    (insert back-edge) (insert "\n") ;; back edge
-	    (insert front-edge) (insert "\n") ;; front edge
-	    (setf back-edge "") (setf front-edge "")))))
-    row-vals))
-
-(defun org-plot/gnuplot-script (data-file num-cols params &optional preface)
-  "Write a gnuplot script to DATA-FILE respecting the options set in PARAMS.
-NUM-COLS controls the number of columns plotted in a 2-d plot.
-Optional argument PREFACE returns only option parameters in a
-manner suitable for prepending to a user-specified script."
-  (let* ((type (plist-get params :plot-type))
-	 (with (if (equal type 'grid)
-		   'pm3d
-		 (plist-get params :with)))
-	 (sets (plist-get params :set))
-	 (lines (plist-get params :line))
-	 (map (plist-get params :map))
-	 (title (plist-get params :title))
-	 (file (plist-get params :file))
-	 (ind (plist-get params :ind))
-	 (time-ind (plist-get params :timeind))
-	 (timefmt (plist-get params :timefmt))
-	 (text-ind (plist-get params :textind))
-	 (deps (if (plist-member params :deps) (plist-get params :deps)))
-	 (col-labels (plist-get params :labels))
-	 (x-labels (plist-get params :xlabels))
-	 (y-labels (plist-get params :ylabels))
-	 (plot-str "'%s' using %s%d%s with %s title '%s'")
-	 (plot-cmd (case type
-		     ('2d "plot")
-		     ('3d "splot")
-		     ('grid "splot")))
-	 (script "reset") plot-lines)
-    (flet ((add-to-script (line) (setf script (format "%s\n%s" script line))))
-      (when file ;; output file
-	(add-to-script (format "set term %s" (file-name-extension file)))
-	(add-to-script (format "set output '%s'" file)))
-      (case type ;; type
-	('2d ())
-	('3d (if map (add-to-script "set map")))
-	('grid (if map
-		   (add-to-script "set pm3d map")
-		 (add-to-script "set pm3d"))))
-      (when title (add-to-script (format "set title '%s'" title))) ;; title
-      (when lines (mapc (lambda (el) (add-to-script el)) lines)) ;; line
-      (when sets ;; set
-	(mapc (lambda (el) (add-to-script (format "set %s" el))) sets))
-      (when x-labels ;; x labels (xtics)
-	(add-to-script
-	 (format "set xtics (%s)"
-		 (mapconcat (lambda (pair)
-			      (format "\"%s\" %d" (cdr pair) (car pair)))
-			    x-labels ", "))))
-      (when y-labels ;; y labels (ytics)
-	(add-to-script
-	 (format "set ytics (%s)"
-		 (mapconcat (lambda (pair)
-			      (format "\"%s\" %d" (cdr pair) (car pair)))
-			    y-labels ", "))))
-      (when time-ind ;; timestamp index
-	(add-to-script "set xdata time")
-	(add-to-script (concat "set timefmt \""
-			       (or timefmt ;; timefmt passed to gnuplot
-				   "%Y-%m-%d-%H:%M:%S") "\"")))
-      (unless preface
-        (case type ;; plot command
-	('2d (dotimes (col num-cols)
-	       (unless (and (equal type '2d)
-			    (or (and ind (equal (+ 1 col) ind))
-				(and deps (not (member (+ 1 col) deps)))))
-		 (setf plot-lines
-		       (cons
-			(format plot-str data-file
-				(or (and ind (> ind 0)
-                                         (not text-ind)
-                                         (format "%d:" ind)) "")
-				(+ 1 col)
-				(if text-ind (format ":xticlabel(%d)" ind) "")
-				with
-				(or (nth col col-labels) (format "%d" (+ 1 col))))
-			plot-lines)))))
-	('3d
-	 (setq plot-lines (list (format "'%s' matrix with %s title ''"
-					data-file with))))
-	('grid
-	 (setq plot-lines (list (format "'%s' with %s title ''"
-					data-file with)))))
-        (add-to-script
-         (concat plot-cmd " " (mapconcat 'identity (reverse plot-lines) ",\\\n    "))))
-      script)))
-
-;;-----------------------------------------------------------------------------
-;; facade functions
-;;;###autoload
-(defun org-plot/gnuplot (&optional params)
-  "Plot table using gnuplot.  Gnuplot options can be specified with PARAMS.
-If not given options will be taken from the +PLOT
-line directly before or after the table."
-  (interactive)
-  (require 'gnuplot)
-  (save-window-excursion
-    (delete-other-windows)
-    (when (get-buffer "*gnuplot*") ;; reset *gnuplot* if it already running
-      (with-current-buffer "*gnuplot*"
-	(goto-char (point-max))
-	(gnuplot-delchar-or-maybe-eof nil)))
-    (org-plot/goto-nearest-table)
-    ;; set default options
-    (mapc
-     (lambda (pair)
-       (unless (plist-member params (car pair))
-	 (setf params (plist-put params (car pair) (cdr pair)))))
-     org-plot/gnuplot-default-options)
-    ;; collect table and table information
-    (let* ((data-file (make-temp-file "org-plot"))
-	   (table (org-table-to-lisp))
-	   (num-cols (length (if (eq (first table) 'hline) (second table)
-			       (first table)))))
-      (while (equal 'hline (first table)) (setf table (cdr table)))
-      (when (equal (second table) 'hline)
-	(setf params (plist-put params :labels (first table))) ;; headers to labels
-	(setf table (delq 'hline (cdr table)))) ;; clean non-data from table
-      ;; collect options
-      (save-excursion (while (and (equal 0 (forward-line -1))
-				  (looking-at "[[:space:]]*#\\+"))
-			(setf params (org-plot/collect-options params))))
-      ;; dump table to datafile (very different for grid)
-      (case (plist-get params :plot-type)
-	('2d   (org-plot/gnuplot-to-data table data-file params))
-	('3d   (org-plot/gnuplot-to-data table data-file params))
-	('grid (let ((y-labels (org-plot/gnuplot-to-grid-data
-				table data-file params)))
-		 (when y-labels (plist-put params :ylabels y-labels)))))
-      ;; check for timestamp ind column
-      (let ((ind (- (plist-get params :ind) 1)))
-	(when (and (>= ind 0) (equal '2d (plist-get params :plot-type)))
-	  (if (= (length
-		  (delq 0 (mapcar
-			   (lambda (el)
-			     (if (string-match org-ts-regexp3 el)
-				 0 1))
-			   (mapcar (lambda (row) (nth ind row)) table)))) 0)
-	      (plist-put params :timeind t)
-	    ;; check for text ind column
-	    (if (or (string= (plist-get params :with) "hist")
-		    (> (length
-			(delq 0 (mapcar
-				 (lambda (el)
-				   (if (string-match org-table-number-regexp el)
-				       0 1))
-				 (mapcar (lambda (row) (nth ind row)) table)))) 0))
-		(plist-put params :textind t)))))
-      ;; write script
-      (with-temp-buffer
-	(if (plist-get params :script) ;; user script
-	    (progn (insert
-                    (org-plot/gnuplot-script data-file num-cols params t))
-                   (insert "\n")
-                   (insert-file-contents (plist-get params :script))
-                   (goto-char (point-min))
-                   (while (re-search-forward "$datafile" nil t)
-                     (replace-match data-file nil nil)))
-	  (insert
-	   (org-plot/gnuplot-script data-file num-cols params)))
-	;; graph table
-	(gnuplot-mode)
-	(gnuplot-send-buffer-to-gnuplot))
-      ;; cleanup
-      (bury-buffer (get-buffer "*gnuplot*"))
-      (run-with-idle-timer 0.1 nil (lambda () (delete-file data-file))))))
-
-(provide 'org-plot)
-
-;; arch-tag: 5763f7c6-0c75-416d-b070-398ee4ec0eca
-;;; org-plot.el ends here