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org-plot.el (org-plot/gnuplot): Correct the callback for the and register it as soon as possible. The data-file variable is not in the scope of the callback, one needs to grab its value while registering the callback. With this patch the timer is set as soon as the file is created. Without this patch the timer is set at the end of a let-block, if anything goes wrong in the let-block before the timer is set, the file will not be removed. TINYCHANGE
357 lines
13 KiB
EmacsLisp
357 lines
13 KiB
EmacsLisp
;;; org-plot.el --- Support for plotting from Org-mode
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;; Copyright (C) 2008-2014 Free Software Foundation, Inc.
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;;
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;; Author: Eric Schulte <schulte dot eric at gmail dot com>
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;; Keywords: tables, plotting
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;; Homepage: http://orgmode.org
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;;
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;; This file is part of GNU Emacs.
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;;
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Borrows ideas and a couple of lines of code from org-exp.el.
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;; Thanks to the org-mode mailing list for testing and implementation
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;; and feature suggestions
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;;; Code:
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(require 'org)
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(require 'org-table)
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(eval-when-compile
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(require 'cl))
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(declare-function gnuplot-delchar-or-maybe-eof "ext:gnuplot" (arg))
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(declare-function gnuplot-mode "ext:gnuplot" ())
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(declare-function gnuplot-send-buffer-to-gnuplot "ext:gnuplot" ())
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(defvar org-plot/gnuplot-default-options
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'((:plot-type . 2d)
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(:with . lines)
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(:ind . 0))
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"Default options to gnuplot used by `org-plot/gnuplot'.")
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(defvar org-plot-timestamp-fmt nil)
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(defun org-plot/add-options-to-plist (p options)
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"Parse an OPTIONS line and set values in the property list P.
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Returns the resulting property list."
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(let (o)
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(when options
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(let ((op '(("type" . :plot-type)
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("script" . :script)
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("line" . :line)
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("set" . :set)
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("title" . :title)
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("ind" . :ind)
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("deps" . :deps)
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("with" . :with)
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("file" . :file)
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("labels" . :labels)
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("map" . :map)
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("timeind" . :timeind)
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("timefmt" . :timefmt)))
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(multiples '("set" "line"))
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(regexp ":\\([\"][^\"]+?[\"]\\|[(][^)]+?[)]\\|[^ \t\n\r;,.]*\\)")
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(start 0)
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o)
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(while (setq o (pop op))
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(if (member (car o) multiples) ;; keys with multiple values
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(while (string-match
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(concat (regexp-quote (car o)) regexp)
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options start)
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(setq start (match-end 0))
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(setq p (plist-put p (cdr o)
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(cons (car (read-from-string
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(match-string 1 options)))
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(plist-get p (cdr o)))))
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p)
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(if (string-match (concat (regexp-quote (car o)) regexp)
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options)
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(setq p (plist-put p (cdr o)
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(car (read-from-string
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(match-string 1 options)))))))))))
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p)
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(defun org-plot/goto-nearest-table ()
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"Move the point forward to the beginning of nearest table.
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Return value is the point at the beginning of the table."
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(interactive) (move-beginning-of-line 1)
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(while (not (or (org-at-table-p) (< 0 (forward-line 1)))))
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(goto-char (org-table-begin)))
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(defun org-plot/collect-options (&optional params)
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"Collect options from an org-plot '#+Plot:' line.
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Accepts an optional property list PARAMS, to which the options
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will be added. Returns the resulting property list."
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(interactive)
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(let ((line (thing-at-point 'line)))
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(if (string-match "#\\+PLOT: +\\(.*\\)$" line)
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(org-plot/add-options-to-plist params (match-string 1 line))
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params)))
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(defun org-plot-quote-timestamp-field (s)
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"Convert field S from timestamp to Unix time and export to gnuplot."
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(format-time-string org-plot-timestamp-fmt (org-time-string-to-time s)))
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(defun org-plot-quote-tsv-field (s)
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"Quote field S for export to gnuplot."
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(if (string-match org-table-number-regexp s) s
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(if (string-match org-ts-regexp3 s)
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(org-plot-quote-timestamp-field s)
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(concat "\"" (mapconcat 'identity (split-string s "\"") "\"\"") "\""))))
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(defun org-plot/gnuplot-to-data (table data-file params)
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"Export TABLE to DATA-FILE in a format readable by gnuplot.
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Pass PARAMS through to `orgtbl-to-generic' when exporting TABLE."
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(with-temp-file
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data-file
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(make-local-variable 'org-plot-timestamp-fmt)
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(setq org-plot-timestamp-fmt (or
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(plist-get params :timefmt)
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"%Y-%m-%d-%H:%M:%S"))
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(insert (orgtbl-to-generic
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table
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(org-combine-plists
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'(:sep "\t" :fmt org-plot-quote-tsv-field)
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params))))
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nil)
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(defun org-plot/gnuplot-to-grid-data (table data-file params)
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"Export the data in TABLE to DATA-FILE for gnuplot.
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This means in a format appropriate for grid plotting by gnuplot.
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PARAMS specifies which columns of TABLE should be plotted as independent
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and dependant variables."
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(interactive)
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(let* ((ind (- (plist-get params :ind) 1))
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(deps (if (plist-member params :deps)
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(mapcar (lambda (val) (- val 1)) (plist-get params :deps))
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(let (collector)
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(dotimes (col (length (first table)))
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(setf collector (cons col collector)))
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collector)))
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(counter 0)
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row-vals)
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(when (>= ind 0) ;; collect values of ind col
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(setf row-vals (mapcar (lambda (row) (setf counter (+ 1 counter))
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(cons counter (nth ind row))) table)))
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(when (or deps (>= ind 0)) ;; remove non-plotting columns
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(setf deps (delq ind deps))
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(setf table (mapcar (lambda (row)
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(dotimes (col (length row))
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(unless (memq col deps)
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(setf (nth col row) nil)))
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(delq nil row))
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table)))
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;; write table to gnuplot grid datafile format
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(with-temp-file data-file
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(let ((num-rows (length table)) (num-cols (length (first table)))
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(gnuplot-row (lambda (col row value)
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(setf col (+ 1 col)) (setf row (+ 1 row))
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(format "%f %f %f\n%f %f %f\n"
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col (- row 0.5) value ;; lower edge
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col (+ row 0.5) value))) ;; upper edge
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front-edge back-edge)
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(dotimes (col num-cols)
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(dotimes (row num-rows)
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(setf back-edge
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(concat back-edge
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(funcall gnuplot-row (- col 1) row
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(string-to-number (nth col (nth row table))))))
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(setf front-edge
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(concat front-edge
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(funcall gnuplot-row col row
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(string-to-number (nth col (nth row table)))))))
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;; only insert once per row
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(insert back-edge) (insert "\n") ;; back edge
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(insert front-edge) (insert "\n") ;; front edge
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(setf back-edge "") (setf front-edge ""))))
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row-vals))
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(defun org-plot/gnuplot-script (data-file num-cols params &optional preface)
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"Write a gnuplot script to DATA-FILE respecting the options set in PARAMS.
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NUM-COLS controls the number of columns plotted in a 2-d plot.
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Optional argument PREFACE returns only option parameters in a
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manner suitable for prepending to a user-specified script."
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(let* ((type (plist-get params :plot-type))
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(with (if (equal type 'grid)
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'pm3d
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(plist-get params :with)))
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(sets (plist-get params :set))
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(lines (plist-get params :line))
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(map (plist-get params :map))
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(title (plist-get params :title))
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(file (plist-get params :file))
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(ind (plist-get params :ind))
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(time-ind (plist-get params :timeind))
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(timefmt (plist-get params :timefmt))
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(text-ind (plist-get params :textind))
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(deps (if (plist-member params :deps) (plist-get params :deps)))
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(col-labels (plist-get params :labels))
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(x-labels (plist-get params :xlabels))
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(y-labels (plist-get params :ylabels))
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(plot-str "'%s' using %s%d%s with %s title '%s'")
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(plot-cmd (case type
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('2d "plot")
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('3d "splot")
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('grid "splot")))
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(script "reset")
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; ats = add-to-script
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(ats (lambda (line) (setf script (format "%s\n%s" script line))))
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plot-lines)
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(when file ;; output file
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(funcall ats (format "set term %s" (file-name-extension file)))
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(funcall ats (format "set output '%s'" file)))
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(case type ;; type
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('2d ())
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('3d (if map (funcall ats "set map")))
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('grid (if map (funcall ats "set pm3d map")
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(funcall ats "set pm3d"))))
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(when title (funcall ats (format "set title '%s'" title))) ;; title
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(when lines (mapc (lambda (el) (funcall ats el)) lines)) ;; line
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(when sets ;; set
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(mapc (lambda (el) (funcall ats (format "set %s" el))) sets))
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(when x-labels ;; x labels (xtics)
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(funcall ats
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(format "set xtics (%s)"
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(mapconcat (lambda (pair)
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(format "\"%s\" %d" (cdr pair) (car pair)))
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x-labels ", "))))
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(when y-labels ;; y labels (ytics)
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(funcall ats
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(format "set ytics (%s)"
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(mapconcat (lambda (pair)
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(format "\"%s\" %d" (cdr pair) (car pair)))
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y-labels ", "))))
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(when time-ind ;; timestamp index
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(funcall ats "set xdata time")
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(funcall ats (concat "set timefmt \""
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(or timefmt ;; timefmt passed to gnuplot
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"%Y-%m-%d-%H:%M:%S") "\"")))
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(unless preface
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(case type ;; plot command
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('2d (dotimes (col num-cols)
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(unless (and (equal type '2d)
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(or (and ind (equal (+ 1 col) ind))
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(and deps (not (member (+ 1 col) deps)))))
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(setf plot-lines
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(cons
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(format plot-str data-file
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(or (and ind (> ind 0)
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(not text-ind)
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(format "%d:" ind)) "")
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(+ 1 col)
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(if text-ind (format ":xticlabel(%d)" ind) "")
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with
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(or (nth col col-labels) (format "%d" (+ 1 col))))
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plot-lines)))))
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('3d
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(setq plot-lines (list (format "'%s' matrix with %s title ''"
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data-file with))))
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('grid
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(setq plot-lines (list (format "'%s' with %s title ''"
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data-file with)))))
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(funcall ats
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(concat plot-cmd " " (mapconcat 'identity (reverse plot-lines) ",\\\n "))))
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script))
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;;-----------------------------------------------------------------------------
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;; facade functions
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;;;###autoload
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(defun org-plot/gnuplot (&optional params)
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"Plot table using gnuplot. Gnuplot options can be specified with PARAMS.
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If not given options will be taken from the +PLOT
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line directly before or after the table."
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(interactive)
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(require 'gnuplot)
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(save-window-excursion
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(delete-other-windows)
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(when (get-buffer "*gnuplot*") ;; reset *gnuplot* if it already running
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(with-current-buffer "*gnuplot*"
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(goto-char (point-max))))
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(org-plot/goto-nearest-table)
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;; set default options
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(mapc
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(lambda (pair)
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(unless (plist-member params (car pair))
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(setf params (plist-put params (car pair) (cdr pair)))))
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org-plot/gnuplot-default-options)
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;; collect table and table information
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(let* ((data-file (make-temp-file "org-plot"))
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(table (org-table-to-lisp))
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(num-cols (length (if (eq (first table) 'hline) (second table)
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(first table)))))
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(run-with-idle-timer 0.1 nil #'delete-file data-file)
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(while (equal 'hline (first table)) (setf table (cdr table)))
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(when (equal (second table) 'hline)
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(setf params (plist-put params :labels (first table))) ;; headers to labels
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(setf table (delq 'hline (cdr table)))) ;; clean non-data from table
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;; collect options
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(save-excursion (while (and (equal 0 (forward-line -1))
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(looking-at "[[:space:]]*#\\+"))
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(setf params (org-plot/collect-options params))))
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;; dump table to datafile (very different for grid)
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(case (plist-get params :plot-type)
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('2d (org-plot/gnuplot-to-data table data-file params))
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('3d (org-plot/gnuplot-to-data table data-file params))
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('grid (let ((y-labels (org-plot/gnuplot-to-grid-data
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table data-file params)))
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(when y-labels (plist-put params :ylabels y-labels)))))
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;; check for timestamp ind column
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(let ((ind (- (plist-get params :ind) 1)))
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(when (and (>= ind 0) (equal '2d (plist-get params :plot-type)))
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(if (= (length
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(delq 0 (mapcar
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(lambda (el)
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(if (string-match org-ts-regexp3 el)
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0 1))
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(mapcar (lambda (row) (nth ind row)) table)))) 0)
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(plist-put params :timeind t)
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;; check for text ind column
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(if (or (string= (plist-get params :with) "hist")
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(> (length
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(delq 0 (mapcar
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(lambda (el)
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(if (string-match org-table-number-regexp el)
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0 1))
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(mapcar (lambda (row) (nth ind row)) table)))) 0))
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(plist-put params :textind t)))))
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;; write script
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(with-temp-buffer
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(if (plist-get params :script) ;; user script
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(progn (insert
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(org-plot/gnuplot-script data-file num-cols params t))
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(insert "\n")
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(insert-file-contents (plist-get params :script))
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(goto-char (point-min))
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(while (re-search-forward "$datafile" nil t)
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(replace-match data-file nil nil)))
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(insert
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(org-plot/gnuplot-script data-file num-cols params)))
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;; graph table
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(gnuplot-mode)
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(gnuplot-send-buffer-to-gnuplot))
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;; cleanup
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(bury-buffer (get-buffer "*gnuplot*")))))
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(provide 'org-plot)
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;; Local variables:
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;; generated-autoload-file: "org-loaddefs.el"
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;; End:
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;;; org-plot.el ends here
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