1 ;;; calc-graph.el --- graph output functions for Calc
3 ;; Copyright (C) 1990, 1991, 1992, 1993, 2001, 2002, 2003, 2004,
4 ;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
6 ;; Author: David Gillespie <daveg@synaptics.com>
7 ;; Maintainer: Jay Belanger <jay.p.belanger@gmail.com>
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software: you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation, either version 3 of the License, or
14 ;; (at your option) any later version.
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
28 ;; This file is autoloaded from calc-ext.el.
35 ;; The following three variables are customizable and defined in calc.el.
36 (defvar calc-gnuplot-name)
37 (defvar calc-gnuplot-plot-command)
38 (defvar calc-gnuplot-print-command)
40 (defvar calc-gnuplot-tempfile "calc")
42 (defvar calc-gnuplot-default-device)
43 (defvar calc-gnuplot-default-output)
44 (defvar calc-gnuplot-print-device)
45 (defvar calc-gnuplot-print-output)
46 (defvar calc-gnuplot-keep-outfile nil)
47 (defvar calc-gnuplot-version nil)
49 (defvar calc-gnuplot-display (getenv "DISPLAY"))
50 (defvar calc-gnuplot-geometry)
52 (defvar calc-graph-default-resolution)
53 (defvar calc-graph-default-resolution-3d)
54 (defvar calc-graph-default-precision 5)
56 (defvar calc-gnuplot-buffer nil)
57 (defvar calc-gnuplot-input nil)
59 (defvar calc-gnuplot-last-error-pos 1)
60 (defvar calc-graph-last-device nil)
61 (defvar calc-graph-last-output nil)
62 (defvar calc-graph-file-cache nil)
63 (defvar calc-graph-var-cache nil)
64 (defvar calc-graph-data-cache nil)
65 (defvar calc-graph-data-cache-limit 10)
66 (defvar calc-graph-no-auto-view nil)
67 (defvar calc-graph-no-wait nil)
68 (defvar calc-gnuplot-trail-mark)
70 (defun calc-graph-fast (many)
72 (let ((calc-graph-no-auto-view t))
75 (calc-graph-plot nil)))
77 (defun calc-graph-fast-3d (many)
79 (let ((calc-graph-no-auto-view t))
81 (calc-graph-add-3d many)
82 (calc-graph-plot nil)))
84 (defun calc-graph-delete (all)
89 (set-buffer calc-gnuplot-input)
90 (and (calc-graph-find-plot t all)
92 (if (looking-at "s?plot")
94 (setq calc-graph-var-cache nil)
95 (delete-region (point) (point-max)))
96 (delete-region (point) (1- (point-max)))))))
97 (calc-graph-view-commands)))
99 (defun calc-graph-find-plot (&optional before all)
100 (goto-char (point-min))
101 (and (re-search-forward "^s?plot[ \t]+" nil t)
103 (goto-char (point-max))
105 (not (search-backward "," nil t))
110 (beginning-of-line)))
112 (re-search-forward ",[ \t]+")))
115 (defun calc-graph-add (many)
120 (calc-graph-add-curve (calc-graph-lookup (calc-top-n 2))
121 (calc-graph-lookup (calc-top-n 1))))
122 ((or (consp many) (eq many 0))
123 (let ((xdata (calc-graph-lookup (calc-top-n 2)))
124 (ylist (calc-top-n 1)))
125 (or (eq (car-safe ylist) 'vec)
126 (error "Y argument must be a vector"))
127 (while (setq ylist (cdr ylist))
128 (calc-graph-add-curve xdata (calc-graph-lookup (car ylist))))))
129 ((> (setq many (prefix-numeric-value many)) 0)
130 (let ((xdata (calc-graph-lookup (calc-top-n (1+ many)))))
132 (calc-graph-add-curve xdata
133 (calc-graph-lookup (calc-top-n many)))
134 (setq many (1- many)))))
139 (setq pair (calc-top-n many))
140 (or (and (eq (car-safe pair) 'vec)
142 (error "Argument must be an [x,y] vector"))
143 (calc-graph-add-curve (calc-graph-lookup (nth 1 pair))
144 (calc-graph-lookup (nth 2 pair)))
145 (setq many (1- many))))))
146 (calc-graph-view-commands)))
148 (defun calc-graph-add-3d (many)
153 (calc-graph-add-curve (calc-graph-lookup (calc-top-n 3))
154 (calc-graph-lookup (calc-top-n 2))
155 (calc-graph-lookup (calc-top-n 1))))
156 ((or (consp many) (eq many 0))
157 (let ((xdata (calc-graph-lookup (calc-top-n 3)))
158 (ydata (calc-graph-lookup (calc-top-n 2)))
159 (zlist (calc-top-n 1)))
160 (or (eq (car-safe zlist) 'vec)
161 (error "Z argument must be a vector"))
162 (while (setq zlist (cdr zlist))
163 (calc-graph-add-curve xdata ydata
164 (calc-graph-lookup (car zlist))))))
165 ((> (setq many (prefix-numeric-value many)) 0)
166 (let ((xdata (calc-graph-lookup (calc-top-n (+ many 2))))
167 (ydata (calc-graph-lookup (calc-top-n (+ many 1)))))
169 (calc-graph-add-curve xdata ydata
170 (calc-graph-lookup (calc-top-n many)))
171 (setq many (1- many)))))
176 (setq curve (calc-top-n many))
177 (or (and (eq (car-safe curve) 'vec)
178 (= (length curve) 4))
179 (error "Argument must be an [x,y,z] vector"))
180 (calc-graph-add-curve (calc-graph-lookup (nth 1 curve))
181 (calc-graph-lookup (nth 2 curve))
182 (calc-graph-lookup (nth 3 curve)))
183 (setq many (1- many))))))
184 (calc-graph-view-commands)))
186 (defun calc-graph-add-curve (xdata ydata &optional zdata)
187 (let ((num (calc-graph-count-curves))
188 (pstyle (calc-var-value 'var-PointStyles))
189 (lstyle (calc-var-value 'var-LineStyles)))
191 (set-buffer calc-gnuplot-input)
192 (goto-char (point-min))
193 (if (re-search-forward (if zdata "^plot[ \t]" "^splot[ \t]")
195 (error "Can't mix 2d and 3d curves on one graph"))
196 (if (re-search-forward "^s?plot[ \t]" nil t)
200 (goto-char (point-max))
201 (or (eq (preceding-char) ?\n)
203 (insert (if zdata "splot" "plot") " \n")
205 (insert "{" (symbol-name (nth 1 xdata))
206 ":" (symbol-name (nth 1 ydata)))
208 (insert ":" (symbol-name (nth 1 zdata))))
210 "title \"" (symbol-name (nth 1 ydata)) "\" "
212 (setq pstyle (and (eq (car-safe pstyle) 'vec) (nth (1+ num) pstyle)))
213 (setq lstyle (and (eq (car-safe lstyle) 'vec) (nth (1+ num) lstyle))))
214 (calc-graph-set-styles
215 (or (and (Math-num-integerp lstyle) (math-trunc lstyle))
217 (or (and (Math-num-integerp pstyle) (math-trunc pstyle))
218 (if (eq (car-safe (calc-var-value (nth 2 ydata))) 'vec)
220 (math-contains-sdev-p (eval (nth 2 ydata))))))
222 (defun calc-graph-lookup (thing)
223 (if (and (eq (car-safe thing) 'var)
224 (calc-var-value (nth 2 thing)))
226 (let ((found (assoc thing calc-graph-var-cache)))
228 (let ((varname (concat "PlotData"
230 (1+ (length calc-graph-var-cache))))))
231 (setq var (list 'var (intern varname)
232 (intern (concat "var-" varname)))
233 found (cons thing var)
234 calc-graph-var-cache (cons found calc-graph-var-cache))
235 (set (nth 2 var) thing)))
238 (defun calc-graph-juggle (arg)
242 (set-buffer calc-gnuplot-input)
244 (let ((num (calc-graph-count-curves)))
247 (setq arg (+ arg num))))))
248 (while (>= (setq arg (1- arg)) 0)
249 (calc-graph-do-juggle))))
251 (defun calc-graph-count-curves ()
253 (set-buffer calc-gnuplot-input)
254 (if (re-search-forward "^s?plot[ \t]" nil t)
256 (goto-char (point-min))
257 (while (search-forward "," nil t)
262 (defun calc-graph-do-juggle ()
264 (and (calc-graph-find-plot t t)
267 (calc-graph-find-plot t nil)
268 (or (eq base (point))
269 (let ((str (buffer-substring (+ (point) 2) (1- (point-max)))))
270 (delete-region (point) (1- (point-max)))
271 (goto-char (+ base 5))
272 (insert str ", ")))))))
274 (defun calc-graph-print (flag)
276 (calc-graph-plot flag t))
280 (defvar var-PlotRejects)
282 ;; The following variables are local to calc-graph-plot, but are
283 ;; used in the functions calc-graph-compute-2d, calc-graph-refine-2d,
284 ;; calc-graph-recompute-2d, calc-graph-compute-3d and
285 ;; calc-graph-format-data, which are called by calc-graph-plot.
286 (defvar calc-graph-yvalue)
287 (defvar calc-graph-yvec)
288 (defvar calc-graph-numsteps)
289 (defvar calc-graph-numsteps3)
290 (defvar calc-graph-xvalue)
291 (defvar calc-graph-xvec)
292 (defvar calc-graph-xname)
293 (defvar calc-graph-yname)
294 (defvar calc-graph-xstep)
295 (defvar calc-graph-ycache)
296 (defvar calc-graph-ycacheptr)
297 (defvar calc-graph-refine)
298 (defvar calc-graph-keep-file)
299 (defvar calc-graph-xval)
300 (defvar calc-graph-xlow)
301 (defvar calc-graph-xhigh)
302 (defvar calc-graph-yval)
303 (defvar calc-graph-yp)
304 (defvar calc-graph-xp)
305 (defvar calc-graph-zp)
306 (defvar calc-graph-yvector)
307 (defvar calc-graph-resolution)
308 (defvar calc-graph-y3value)
309 (defvar calc-graph-y3name)
310 (defvar calc-graph-y3step)
311 (defvar calc-graph-zval)
312 (defvar calc-graph-stepcount)
313 (defvar calc-graph-is-splot)
314 (defvar calc-graph-surprise-splot)
315 (defvar calc-graph-blank)
316 (defvar calc-graph-non-blank)
317 (defvar calc-graph-curve-num)
319 (defun calc-graph-plot (flag &optional printing)
322 (let ((calcbuf (current-buffer))
323 (tempbuf (get-buffer-create "*Gnuplot Temp-2*"))
326 (calc-graph-curve-num 0)
327 (calc-graph-refine (and flag (> (prefix-numeric-value flag) 0)))
328 (recompute (and flag (< (prefix-numeric-value flag) 0)))
329 (calc-graph-surprise-splot nil)
331 cache-env calc-graph-is-splot device output calc-graph-resolution precision samples-pos)
332 (add-hook 'kill-emacs-hook 'calc-graph-kill-hook)
337 (set-buffer calc-gnuplot-input)
338 (goto-char (point-min))
339 (setq calc-graph-is-splot (re-search-forward "^splot[ \t]" nil t))
340 (let ((str (buffer-string))
341 (ver calc-gnuplot-version))
342 (set-buffer (get-buffer-create "*Gnuplot Temp*"))
344 (insert "# (Note: This is a temporary copy---do not edit!)\n")
346 (insert "set noarrow\nset nolabel\n"
347 "set autoscale xy\nset nologscale xy\n"
348 "set xlabel\nset ylabel\nset title\n"
349 "set noclip points\nset clip one\nset clip two\n"
350 "set format \"%g\"\nset tics\nset xtics\nset ytics\n"
351 "set data style linespoints\n"
352 "set nogrid\nset nokey\nset nopolar\n"))
354 (insert "set surface\nset nocontour\n"
355 "set " (if calc-graph-is-splot "" "no") "parametric\n"
356 "set notime\nset border\nset ztics\nset zeroaxis\n"
357 "set view 60,30,1,1\nset offsets 0,0,0,0\n"))
358 (setq samples-pos (point))
360 (goto-char (point-min))
361 (if calc-graph-is-splot
362 (if calc-graph-refine
363 (error "This option works only for 2d plots")
365 (let ((calc-gnuplot-input (current-buffer))
366 (calc-graph-no-auto-view t))
368 (setq device calc-gnuplot-print-device
369 output calc-gnuplot-print-output)
370 (setq device (calc-graph-find-command "terminal")
371 output (calc-graph-find-command "output"))
373 (setq device calc-gnuplot-default-device))
375 (setq output (car (read-from-string output)))
376 (setq output calc-gnuplot-default-output)))
377 (if (or (equal device "") (equal device "default"))
378 (setq device (if printing
380 (if (or (eq window-system 'x) (getenv "DISPLAY"))
382 (if (>= calc-gnuplot-version 3)
383 "dumb" "postscript")))))
384 (if (equal device "dumb")
385 (setq device (format "dumb %d %d"
386 (1- (frame-width)) (1- (frame-height)))))
387 (if (equal device "big")
388 (setq device (format "dumb %d %d"
389 (* 4 (- (frame-width) 3))
390 (* 4 (- (frame-height) 3)))))
392 (if (or (equal output "auto")
393 (and (equal output "tty") (setq tty-output t)))
394 (setq tempoutfile (calc-temp-file-name -1)
396 (setq output (eval output)))
397 (or (equal device calc-graph-last-device)
399 (setq calc-graph-last-device device)
400 (calc-gnuplot-command "set terminal" device)))
401 (or (equal output calc-graph-last-output)
403 (setq calc-graph-last-output output)
404 (calc-gnuplot-command "set output"
405 (if (equal output "STDOUT")
407 (prin1-to-string output)))))
408 (setq calc-graph-resolution (calc-graph-find-command "samples"))
409 (if calc-graph-resolution
410 (setq calc-graph-resolution (string-to-number calc-graph-resolution))
411 (setq calc-graph-resolution (if calc-graph-is-splot
412 calc-graph-default-resolution-3d
413 calc-graph-default-resolution)))
414 (setq precision (calc-graph-find-command "precision"))
416 (setq precision (string-to-number precision))
417 (setq precision calc-graph-default-precision))
418 (calc-graph-set-command "terminal")
419 (calc-graph-set-command "output")
420 (calc-graph-set-command "samples")
421 (calc-graph-set-command "precision"))
422 (goto-char samples-pos)
423 (insert "set samples " (int-to-string (max (if calc-graph-is-splot 20 200)
424 (+ 5 calc-graph-resolution))) "\n")
425 (while (re-search-forward "{\\*[^}]+}[^,\n]*" nil t)
426 (delete-region (match-beginning 0) (match-end 0))
429 (while (memq (preceding-char) '(?\s ?\t))
431 (if (eq (preceding-char) ?\,)
432 (delete-backward-char 1))))
435 (setq cache-env (list calc-angle-mode
440 precision calc-graph-is-splot))
441 (if (and (not recompute)
442 (equal (cdr (car calc-graph-data-cache)) cache-env))
443 (while (> (length calc-graph-data-cache)
444 calc-graph-data-cache-limit)
445 (setcdr calc-graph-data-cache
446 (cdr (cdr calc-graph-data-cache))))
447 (setq calc-graph-data-cache (list (cons nil cache-env)))))
448 (calc-graph-find-plot t t)
449 (while (re-search-forward
450 (if calc-graph-is-splot
451 "{\\([^{}:\n]+\\):\\([^{}:\n]+\\):\\([^{}:\n]+\\)}"
452 "{\\([^{}:\n]+\\)\\(:\\)\\([^{}:\n]+\\)}")
454 (setq calc-graph-curve-num (1+ calc-graph-curve-num))
455 (let* ((calc-graph-xname (buffer-substring (match-beginning 1) (match-end 1)))
456 (xvar (intern (concat "var-" calc-graph-xname)))
457 (calc-graph-xvalue (math-evaluate-expr (calc-var-value xvar)))
458 (calc-graph-y3name (and calc-graph-is-splot
459 (buffer-substring (match-beginning 2)
461 (y3var (and calc-graph-is-splot (intern (concat "var-" calc-graph-y3name))))
462 (calc-graph-y3value (and calc-graph-is-splot (calc-var-value y3var)))
463 (calc-graph-yname (buffer-substring (match-beginning 3) (match-end 3)))
464 (yvar (intern (concat "var-" calc-graph-yname)))
465 (calc-graph-yvalue (calc-var-value yvar))
467 (delete-region (match-beginning 0) (match-end 0))
468 (setq filename (calc-temp-file-name calc-graph-curve-num))
472 (calc-graph-xp calc-graph-xvalue)
473 (calc-graph-yp calc-graph-yvalue)
475 (calc-graph-xlow nil) (calc-graph-xhigh nil) (y3low nil) (y3high nil)
476 calc-graph-xvec calc-graph-xval calc-graph-xstep var-DUMMY
477 y3val calc-graph-y3step var-DUMMY2 (calc-graph-zval nil)
478 calc-graph-yvec calc-graph-yval calc-graph-ycache calc-graph-ycacheptr calc-graph-yvector
479 calc-graph-numsteps calc-graph-numsteps3
480 (calc-graph-keep-file (and (not calc-graph-is-splot) (file-exists-p filename)))
481 (calc-graph-stepcount 0)
482 (calc-symbolic-mode nil)
483 (calc-prefer-frac nil)
484 (calc-internal-prec (max 3 precision))
485 (calc-simplify-mode (and (not (memq calc-simplify-mode
489 (calc-graph-non-blank nil)
490 (math-working-step 0)
491 (math-working-step-2 nil))
493 (if calc-graph-is-splot
494 (calc-graph-compute-3d)
495 (calc-graph-compute-2d))
497 (goto-char (point-max))
498 (insert "\n" calc-graph-xname)
499 (if calc-graph-is-splot
500 (insert ":" calc-graph-y3name))
501 (insert ":" calc-graph-yname "\n\n")
502 (setq tempbuftop (point))
503 (let ((calc-group-digits nil)
504 (calc-leading-zeros nil)
505 (calc-number-radix 10)
506 (entry (and (not calc-graph-is-splot)
507 (list calc-graph-xp calc-graph-yp calc-graph-xhigh calc-graph-numsteps))))
509 (nth 1 (nth (1+ calc-graph-curve-num)
510 calc-graph-file-cache)))
511 (setq calc-graph-keep-file nil))
512 (setcar (cdr (nth (1+ calc-graph-curve-num) calc-graph-file-cache))
514 (or calc-graph-keep-file
515 (calc-graph-format-data)))
516 (or calc-graph-keep-file
518 (or calc-graph-non-blank
519 (error "No valid data points for %s:%s"
520 calc-graph-xname calc-graph-yname))
521 (write-region tempbuftop (point-max) filename
523 (insert (prin1-to-string filename))))
524 (if calc-graph-surprise-splot
525 (setcdr cache-env nil))
526 (if (= calc-graph-curve-num 0)
528 (calc-gnuplot-command "clear")
529 (calc-clear-command-flag 'clear-message)
530 (message "No data to plot!"))
531 (setq calc-graph-data-cache-limit (max calc-graph-curve-num
532 calc-graph-data-cache-limit)
533 filename (calc-temp-file-name 0))
534 (write-region (point-min) (point-max) filename nil 'quiet)
535 (calc-gnuplot-command "load" (prin1-to-string filename))
536 (or (equal output "STDOUT")
537 calc-gnuplot-keep-outfile
538 (progn ; need to close the output file before printing/plotting
539 (setq calc-graph-last-output "STDOUT")
540 (calc-gnuplot-command "set output")))
541 (let ((command (if printing
542 calc-gnuplot-print-command
543 (or calc-gnuplot-plot-command
544 (and (string-match "^dumb" device)
545 'calc-graph-show-dumb)
547 'calc-graph-show-tty)))))
549 (if (stringp command)
550 (calc-gnuplot-command
553 calc-gnuplot-print-output)))
554 (if (symbolp command)
555 (funcall command output)
556 (eval command))))))))))
558 (defun calc-graph-compute-2d ()
559 (if (setq calc-graph-yvec (eq (car-safe calc-graph-yvalue) 'vec))
560 (if (= (setq calc-graph-numsteps (1- (length calc-graph-yvalue))) 0)
561 (error "Can't plot an empty vector")
562 (if (setq calc-graph-xvec (eq (car-safe calc-graph-xvalue) 'vec))
563 (or (= (1- (length calc-graph-xvalue)) calc-graph-numsteps)
564 (error "%s and %s have different lengths" calc-graph-xname calc-graph-yname))
565 (if (and (eq (car-safe calc-graph-xvalue) 'intv)
566 (math-constp calc-graph-xvalue))
567 (setq calc-graph-xstep (math-div (math-sub (nth 3 calc-graph-xvalue)
568 (nth 2 calc-graph-xvalue))
569 (1- calc-graph-numsteps))
570 calc-graph-xvalue (nth 2 calc-graph-xvalue))
571 (if (math-realp calc-graph-xvalue)
572 (setq calc-graph-xstep 1)
573 (error "%s is not a suitable basis for %s" calc-graph-xname calc-graph-yname)))))
574 (or (math-realp calc-graph-yvalue)
576 (setq calc-graph-yvalue (math-evaluate-expr calc-graph-yvalue))
577 (calc-default-formula-arglist calc-graph-yvalue)
579 (error "%s does not contain any unassigned variables" calc-graph-yname))
581 (error "%s contains more than one variable: %s"
582 calc-graph-yname arglist))
583 (setq calc-graph-yvalue (math-expr-subst calc-graph-yvalue
584 (math-build-var-name (car arglist))
585 '(var DUMMY var-DUMMY)))))
586 (setq calc-graph-ycache (assoc calc-graph-yvalue calc-graph-data-cache))
587 (delq calc-graph-ycache calc-graph-data-cache)
588 (nconc calc-graph-data-cache
589 (list (or calc-graph-ycache (setq calc-graph-ycache (list calc-graph-yvalue)))))
590 (if (and (not (setq calc-graph-xvec (eq (car-safe calc-graph-xvalue) 'vec)))
591 calc-graph-refine (cdr (cdr calc-graph-ycache)))
592 (calc-graph-refine-2d)
593 (calc-graph-recompute-2d))))
595 (defun calc-graph-refine-2d ()
596 (setq calc-graph-keep-file nil
597 calc-graph-ycacheptr (cdr calc-graph-ycache))
598 (if (and (setq calc-graph-xval (calc-graph-find-command "xrange"))
599 (string-match "\\`\\[\\([0-9.eE+-]*\\):\\([0-9.eE+-]*\\)\\]\\'"
601 (let ((b2 (match-beginning 2))
603 (setq calc-graph-xlow (math-read-number (substring calc-graph-xval
606 calc-graph-xhigh (math-read-number (substring calc-graph-xval b2 e2))))
608 (while (and (cdr calc-graph-ycacheptr)
609 (Math-lessp (car (nth 1 calc-graph-ycacheptr)) calc-graph-xlow))
610 (setq calc-graph-ycacheptr (cdr calc-graph-ycacheptr)))))
611 (setq math-working-step-2 (1- (length calc-graph-ycacheptr)))
612 (while (and (cdr calc-graph-ycacheptr)
613 (or (not calc-graph-xhigh)
614 (Math-lessp (car (car calc-graph-ycacheptr)) calc-graph-xhigh)))
615 (setq var-DUMMY (math-div (math-add (car (car calc-graph-ycacheptr))
616 (car (nth 1 calc-graph-ycacheptr)))
618 math-working-step (1+ math-working-step)
619 calc-graph-yval (math-evaluate-expr calc-graph-yvalue))
620 (setcdr calc-graph-ycacheptr (cons (cons var-DUMMY calc-graph-yval)
621 (cdr calc-graph-ycacheptr)))
622 (setq calc-graph-ycacheptr (cdr (cdr calc-graph-ycacheptr))))
623 (setq calc-graph-yp calc-graph-ycache
624 calc-graph-numsteps 1000000))
626 (defun calc-graph-recompute-2d ()
627 (setq calc-graph-ycacheptr calc-graph-ycache)
629 (setq calc-graph-numsteps (1- (length calc-graph-xvalue))
630 calc-graph-yvector nil)
631 (if (and (eq (car-safe calc-graph-xvalue) 'intv)
632 (math-constp calc-graph-xvalue))
633 (setq calc-graph-numsteps calc-graph-resolution
635 calc-graph-xlow (nth 2 calc-graph-xvalue)
636 calc-graph-xhigh (nth 3 calc-graph-xvalue)
637 calc-graph-xstep (math-div (math-sub calc-graph-xhigh calc-graph-xlow)
638 (1- calc-graph-numsteps))
639 calc-graph-xvalue (nth 2 calc-graph-xvalue))
640 (error "%s is not a suitable basis for %s"
641 calc-graph-xname calc-graph-yname)))
642 (setq math-working-step-2 calc-graph-numsteps)
643 (while (>= (setq calc-graph-numsteps (1- calc-graph-numsteps)) 0)
644 (setq math-working-step (1+ math-working-step))
647 (setq calc-graph-xp (cdr calc-graph-xp)
648 calc-graph-xval (car calc-graph-xp))
649 (and (not (eq calc-graph-ycacheptr calc-graph-ycache))
650 (consp (car calc-graph-ycacheptr))
651 (not (Math-lessp (car (car calc-graph-ycacheptr)) calc-graph-xval))
652 (setq calc-graph-ycacheptr calc-graph-ycache)))
653 (if (= calc-graph-numsteps 0)
654 (setq calc-graph-xval calc-graph-xhigh) ; avoid cumulative roundoff
655 (setq calc-graph-xval calc-graph-xvalue
656 calc-graph-xvalue (math-add calc-graph-xvalue calc-graph-xstep))))
657 (while (and (cdr calc-graph-ycacheptr)
658 (Math-lessp (car (nth 1 calc-graph-ycacheptr)) calc-graph-xval))
659 (setq calc-graph-ycacheptr (cdr calc-graph-ycacheptr)))
660 (or (and (cdr calc-graph-ycacheptr)
661 (Math-equal (car (nth 1 calc-graph-ycacheptr)) calc-graph-xval))
663 (setq calc-graph-keep-file nil
664 var-DUMMY calc-graph-xval)
665 (setcdr calc-graph-ycacheptr (cons (cons calc-graph-xval (math-evaluate-expr calc-graph-yvalue))
666 (cdr calc-graph-ycacheptr)))))
667 (setq calc-graph-ycacheptr (cdr calc-graph-ycacheptr))
669 (setq calc-graph-yvector (cons (cdr (car calc-graph-ycacheptr)) calc-graph-yvector))
670 (or calc-graph-yp (setq calc-graph-yp calc-graph-ycacheptr))))
672 (setq calc-graph-xp calc-graph-xvalue
674 calc-graph-yp (cons 'vec (nreverse calc-graph-yvector))
675 calc-graph-numsteps (1- (length calc-graph-xp)))
676 (setq calc-graph-numsteps 1000000)))
678 (defun calc-graph-compute-3d ()
679 (if (setq calc-graph-yvec (eq (car-safe calc-graph-yvalue) 'vec))
680 (if (math-matrixp calc-graph-yvalue)
682 (setq calc-graph-numsteps (1- (length calc-graph-yvalue))
683 calc-graph-numsteps3 (1- (length (nth 1 calc-graph-yvalue))))
684 (if (eq (car-safe calc-graph-xvalue) 'vec)
685 (or (= (1- (length calc-graph-xvalue)) calc-graph-numsteps)
686 (error "%s has wrong length" calc-graph-xname))
687 (if (and (eq (car-safe calc-graph-xvalue) 'intv)
688 (math-constp calc-graph-xvalue))
689 (setq calc-graph-xvalue (calcFunc-index calc-graph-numsteps
690 (nth 2 calc-graph-xvalue)
692 (math-sub (nth 3 calc-graph-xvalue)
693 (nth 2 calc-graph-xvalue))
694 (1- calc-graph-numsteps))))
695 (if (math-realp calc-graph-xvalue)
696 (setq calc-graph-xvalue (calcFunc-index calc-graph-numsteps calc-graph-xvalue 1))
697 (error "%s is not a suitable basis for %s" calc-graph-xname calc-graph-yname))))
698 (if (eq (car-safe calc-graph-y3value) 'vec)
699 (or (= (1- (length calc-graph-y3value)) calc-graph-numsteps3)
700 (error "%s has wrong length" calc-graph-y3name))
701 (if (and (eq (car-safe calc-graph-y3value) 'intv)
702 (math-constp calc-graph-y3value))
703 (setq calc-graph-y3value (calcFunc-index calc-graph-numsteps3
704 (nth 2 calc-graph-y3value)
706 (math-sub (nth 3 calc-graph-y3value)
707 (nth 2 calc-graph-y3value))
708 (1- calc-graph-numsteps3))))
709 (if (math-realp calc-graph-y3value)
710 (setq calc-graph-y3value (calcFunc-index calc-graph-numsteps3 calc-graph-y3value 1))
711 (error "%s is not a suitable basis for %s" calc-graph-y3name calc-graph-yname))))
712 (setq calc-graph-xp nil
716 (while (setq calc-graph-xvalue (cdr calc-graph-xvalue) calc-graph-yvalue (cdr calc-graph-yvalue))
717 (setq calc-graph-xp (nconc calc-graph-xp (make-list (1+ calc-graph-numsteps3) (car calc-graph-xvalue)))
718 calc-graph-yp (nconc calc-graph-yp (cons 0 (copy-sequence (cdr calc-graph-y3value))))
719 calc-graph-zp (nconc calc-graph-zp (cons '(skip)
720 (copy-sequence (cdr (car calc-graph-yvalue)))))))
721 (setq calc-graph-numsteps (1- (* calc-graph-numsteps
722 (1+ calc-graph-numsteps3)))))
723 (if (= (setq calc-graph-numsteps (1- (length calc-graph-yvalue))) 0)
724 (error "Can't plot an empty vector"))
725 (or (and (eq (car-safe calc-graph-xvalue) 'vec)
726 (= (1- (length calc-graph-xvalue)) calc-graph-numsteps))
727 (error "%s is not a suitable basis for %s" calc-graph-xname calc-graph-yname))
728 (or (and (eq (car-safe calc-graph-y3value) 'vec)
729 (= (1- (length calc-graph-y3value)) calc-graph-numsteps))
730 (error "%s is not a suitable basis for %s" calc-graph-y3name calc-graph-yname))
731 (setq calc-graph-xp calc-graph-xvalue
732 calc-graph-yp calc-graph-y3value
733 calc-graph-zp calc-graph-yvalue
735 (or (math-realp calc-graph-yvalue)
737 (setq calc-graph-yvalue (math-evaluate-expr calc-graph-yvalue))
738 (calc-default-formula-arglist calc-graph-yvalue)
739 (setq arglist (sort arglist 'string-lessp))
741 (error "%s does not contain enough unassigned variables" calc-graph-yname))
742 (and (cdr (cdr arglist))
743 (error "%s contains too many variables: %s" calc-graph-yname arglist))
744 (setq calc-graph-yvalue (math-multi-subst calc-graph-yvalue
745 (mapcar 'math-build-var-name
747 '((var DUMMY var-DUMMY)
748 (var DUMMY2 var-DUMMY2))))))
749 (if (setq calc-graph-xvec (eq (car-safe calc-graph-xvalue) 'vec))
750 (setq calc-graph-numsteps (1- (length calc-graph-xvalue)))
751 (if (and (eq (car-safe calc-graph-xvalue) 'intv)
752 (math-constp calc-graph-xvalue))
753 (setq calc-graph-numsteps calc-graph-resolution
754 calc-graph-xvalue (calcFunc-index calc-graph-numsteps
755 (nth 2 calc-graph-xvalue)
756 (math-div (math-sub (nth 3 calc-graph-xvalue)
757 (nth 2 calc-graph-xvalue))
758 (1- calc-graph-numsteps))))
759 (error "%s is not a suitable basis for %s"
760 calc-graph-xname calc-graph-yname)))
761 (if (eq (car-safe calc-graph-y3value) 'vec)
762 (setq calc-graph-numsteps3 (1- (length calc-graph-y3value)))
763 (if (and (eq (car-safe calc-graph-y3value) 'intv)
764 (math-constp calc-graph-y3value))
765 (setq calc-graph-numsteps3 calc-graph-resolution
766 calc-graph-y3value (calcFunc-index calc-graph-numsteps3
767 (nth 2 calc-graph-y3value)
768 (math-div (math-sub (nth 3 calc-graph-y3value)
769 (nth 2 calc-graph-y3value))
770 (1- calc-graph-numsteps3))))
771 (error "%s is not a suitable basis for %s"
772 calc-graph-y3name calc-graph-yname)))
773 (setq calc-graph-xp nil
777 (setq math-working-step 0)
778 (while (setq calc-graph-xvalue (cdr calc-graph-xvalue))
779 (setq calc-graph-xp (nconc calc-graph-xp (make-list (1+ calc-graph-numsteps3) (car calc-graph-xvalue)))
780 calc-graph-yp (nconc calc-graph-yp (cons 0 (copy-sequence (cdr calc-graph-y3value))))
781 calc-graph-zp (cons '(skip) calc-graph-zp)
782 calc-graph-y3step calc-graph-y3value
783 var-DUMMY (car calc-graph-xvalue)
784 math-working-step-2 0
785 math-working-step (1+ math-working-step))
786 (while (setq calc-graph-y3step (cdr calc-graph-y3step))
787 (setq math-working-step-2 (1+ math-working-step-2)
788 var-DUMMY2 (car calc-graph-y3step)
789 calc-graph-zp (cons (math-evaluate-expr calc-graph-yvalue) calc-graph-zp))))
790 (setq calc-graph-zp (nreverse calc-graph-zp)
791 calc-graph-numsteps (1- (* calc-graph-numsteps (1+ calc-graph-numsteps3))))))
793 (defun calc-graph-format-data ()
794 (if (math-contains-sdev-p calc-graph-yp)
795 (let ((yp calc-graph-yp))
796 (setq calc-graph-yp (cons 'vec (mapcar 'math-get-value (cdr yp))))
797 (setq calc-graph-zp (cons 'vec (mapcar 'math-get-sdev (cdr yp))))))
798 (while (<= (setq calc-graph-stepcount (1+ calc-graph-stepcount)) calc-graph-numsteps)
800 (setq calc-graph-xp (cdr calc-graph-xp)
801 calc-graph-xval (car calc-graph-xp)
802 calc-graph-yp (cdr calc-graph-yp)
803 calc-graph-yval (car calc-graph-yp)
804 calc-graph-zp (cdr calc-graph-zp)
805 calc-graph-zval (car calc-graph-zp))
807 (setq calc-graph-xval calc-graph-xvalue
808 calc-graph-xvalue (math-add calc-graph-xvalue calc-graph-xstep)
809 calc-graph-yp (cdr calc-graph-yp)
810 calc-graph-yval (car calc-graph-yp))
811 (setq calc-graph-xval (car (car calc-graph-yp))
812 calc-graph-yval (cdr (car calc-graph-yp))
813 calc-graph-yp (cdr calc-graph-yp))
814 (if (or (not calc-graph-yp)
815 (and calc-graph-xhigh (equal calc-graph-xval calc-graph-xhigh)))
816 (setq calc-graph-numsteps 0))))
817 (if calc-graph-is-splot
818 (if (and (eq (car-safe calc-graph-zval) 'calcFunc-xyz)
819 (= (length calc-graph-zval) 4))
820 (setq calc-graph-xval (nth 1 calc-graph-zval)
821 calc-graph-yval (nth 2 calc-graph-zval)
822 calc-graph-zval (nth 3 calc-graph-zval)))
823 (if (and (eq (car-safe calc-graph-yval) 'calcFunc-xyz)
824 (= (length calc-graph-yval) 4))
826 (or calc-graph-surprise-splot
828 (set-buffer (get-buffer-create "*Gnuplot Temp*"))
830 (goto-char (point-max))
831 (re-search-backward "^plot[ \t]")
832 (insert "set parametric\ns")
833 (setq calc-graph-surprise-splot t))))
834 (setq calc-graph-xval (nth 1 calc-graph-yval)
835 calc-graph-zval (nth 3 calc-graph-yval)
836 calc-graph-yval (nth 2 calc-graph-yval)))
837 (if (and (eq (car-safe calc-graph-yval) 'calcFunc-xy)
838 (= (length calc-graph-yval) 3))
839 (setq calc-graph-xval (nth 1 calc-graph-yval)
840 calc-graph-yval (nth 2 calc-graph-yval)))))
841 (if (and (Math-realp calc-graph-xval)
842 (Math-realp calc-graph-yval)
843 (or (not calc-graph-zval) (Math-realp calc-graph-zval)))
845 (setq calc-graph-blank nil
846 calc-graph-non-blank t)
847 (if (Math-integerp calc-graph-xval)
848 (insert (math-format-number calc-graph-xval))
849 (if (eq (car calc-graph-xval) 'frac)
850 (setq calc-graph-xval (math-float calc-graph-xval)))
851 (insert (math-format-number (nth 1 calc-graph-xval))
852 "e" (int-to-string (nth 2 calc-graph-xval))))
854 (if (Math-integerp calc-graph-yval)
855 (insert (math-format-number calc-graph-yval))
856 (if (eq (car calc-graph-yval) 'frac)
857 (setq calc-graph-yval (math-float calc-graph-yval)))
858 (insert (math-format-number (nth 1 calc-graph-yval))
859 "e" (int-to-string (nth 2 calc-graph-yval))))
863 (if (Math-integerp calc-graph-zval)
864 (insert (math-format-number calc-graph-zval))
865 (if (eq (car calc-graph-zval) 'frac)
866 (setq calc-graph-zval (math-float calc-graph-zval)))
867 (insert (math-format-number (nth 1 calc-graph-zval))
868 "e" (int-to-string (nth 2 calc-graph-zval))))))
870 (and (not (equal calc-graph-zval '(skip)))
871 (boundp 'var-PlotRejects)
872 (eq (car-safe var-PlotRejects) 'vec)
873 (nconc var-PlotRejects
877 calc-graph-xval calc-graph-yval)))
878 (calc-refresh-evaltos 'var-PlotRejects))
882 (setq calc-graph-blank t))))))
884 (defun calc-temp-file-name (num)
885 (while (<= (length calc-graph-file-cache) (1+ num))
886 (setq calc-graph-file-cache (nconc calc-graph-file-cache (list nil))))
887 (car (or (nth (1+ num) calc-graph-file-cache)
888 (setcar (nthcdr (1+ num) calc-graph-file-cache)
889 (list (make-temp-file
890 (concat calc-gnuplot-tempfile
892 (char-to-string (- ?A num))
893 (int-to-string num))))
896 (defun calc-graph-delete-temps ()
897 (while calc-graph-file-cache
898 (and (car calc-graph-file-cache)
899 (file-exists-p (car (car calc-graph-file-cache)))
901 (delete-file (car (car calc-graph-file-cache)))
903 (setq calc-graph-file-cache (cdr calc-graph-file-cache))))
905 (defun calc-graph-kill-hook ()
906 (calc-graph-delete-temps))
908 (defun calc-graph-show-tty (output)
909 "Default calc-gnuplot-plot-command for \"tty\" output mode.
910 This is useful for tek40xx and other graphics-terminal types."
911 (call-process-region 1 1 shell-file-name
912 nil calc-gnuplot-buffer nil
913 "-c" (format "cat %s >/dev/tty; rm %s" output output)))
915 (defvar calc-dumb-map nil
916 "The keymap for the \"dumb\" terminal plot.")
918 (defun calc-graph-show-dumb (&optional output)
919 "Default calc-gnuplot-plot-command for Pinard's \"dumb\" terminal type.
920 This \"dumb\" driver will be present in Gnuplot 3.0."
922 (save-window-excursion
923 (switch-to-buffer calc-gnuplot-buffer)
924 (delete-other-windows)
925 (goto-char calc-gnuplot-trail-mark)
926 (or (search-forward "\f" nil t)
928 (goto-char (point-max))
929 (re-search-backward "\f\\|^[ \t]+\\^$\\|G N U P L O T")
930 (if (looking-at "\f")
933 (if (eolp) (forward-line 1))
934 (or (calc-graph-find-command "time")
935 (calc-graph-find-command "title")
936 (calc-graph-find-command "ylabel")
938 (insert-before-markers (format "(%s)" (current-time-string)))
940 (set-window-start (selected-window) (point))
941 (goto-char (point-max)))
947 (setq calc-dumb-map (make-sparse-keymap))
948 (define-key calc-dumb-map "\n" 'scroll-up)
949 (define-key calc-dumb-map " " 'scroll-up)
950 (define-key calc-dumb-map "\177" 'scroll-down)
951 (define-key calc-dumb-map "<" 'scroll-left)
952 (define-key calc-dumb-map ">" 'scroll-right)
953 (define-key calc-dumb-map "{" 'scroll-down)
954 (define-key calc-dumb-map "}" 'scroll-up)
955 (define-key calc-dumb-map "q" 'exit-recursive-edit)
956 (define-key calc-dumb-map "\C-c\C-c" 'exit-recursive-edit)))
957 (use-local-map calc-dumb-map)
958 (setq truncate-lines t)
959 (message "Type `q' or `C-c C-c' to return to Calc")
961 (bury-buffer "*Gnuplot Trail*")))
963 (defun calc-graph-clear ()
965 (if calc-graph-last-device
966 (if (or (equal calc-graph-last-device "x11")
967 (equal calc-graph-last-device "X11"))
968 (calc-gnuplot-command "set output"
969 (if (equal calc-graph-last-output "STDOUT")
971 (prin1-to-string calc-graph-last-output)))
972 (calc-gnuplot-command "clear"))))
974 (defun calc-graph-title-x (title)
975 (interactive "sX axis title: ")
976 (calc-graph-set-command "xlabel" (if (not (equal title ""))
977 (prin1-to-string title))))
979 (defun calc-graph-title-y (title)
980 (interactive "sY axis title: ")
981 (calc-graph-set-command "ylabel" (if (not (equal title ""))
982 (prin1-to-string title))))
984 (defun calc-graph-title-z (title)
985 (interactive "sZ axis title: ")
986 (calc-graph-set-command "zlabel" (if (not (equal title ""))
987 (prin1-to-string title))))
989 (defun calc-graph-range-x (range)
990 (interactive "sX axis range: ")
991 (calc-graph-set-range "xrange" range))
993 (defun calc-graph-range-y (range)
994 (interactive "sY axis range: ")
995 (calc-graph-set-range "yrange" range))
997 (defun calc-graph-range-z (range)
998 (interactive "sZ axis range: ")
999 (calc-graph-set-range "zrange" range))
1001 (defun calc-graph-set-range (cmd range)
1002 (if (equal range "$")
1004 (let ((val (calc-top-n 1)))
1005 (if (and (eq (car-safe val) 'intv) (math-constp val))
1007 (math-format-number (math-float (nth 2 val))) ":"
1008 (math-format-number (math-float (nth 3 val)))))
1009 (if (and (eq (car-safe val) 'vec)
1012 (math-format-number (math-float (nth 1 val))) ":"
1013 (math-format-number (math-float (nth 2 val)))))
1014 (error "Range specification must be an interval or 2-vector")))
1015 (calc-pop-stack 1))))
1016 (if (string-match "\\[.+\\]" range)
1017 (setq range (substring range 1 -1)))
1018 (if (and (not (string-match ":" range))
1019 (or (string-match "," range)
1020 (string-match " " range)))
1021 (aset range (match-beginning 0) ?\:))
1022 (calc-graph-set-command cmd (if (not (equal range ""))
1023 (concat "[" range "]"))))
1025 (defun calc-graph-log-x (flag)
1027 (calc-graph-set-log flag 0 0))
1029 (defun calc-graph-log-y (flag)
1031 (calc-graph-set-log 0 flag 0))
1033 (defun calc-graph-log-z (flag)
1035 (calc-graph-set-log 0 0 flag))
1037 (defun calc-graph-set-log (xflag yflag zflag)
1038 (let* ((old (or (calc-graph-find-command "logscale") ""))
1039 (xold (string-match "x" old))
1040 (yold (string-match "y" old))
1041 (zold (string-match "z" old))
1043 (setq str (concat (if (if xflag
1044 (if (eq xflag 0) xold
1045 (> (prefix-numeric-value xflag) 0))
1048 (if (eq yflag 0) yold
1049 (> (prefix-numeric-value yflag) 0))
1052 (if (eq zflag 0) zold
1053 (> (prefix-numeric-value zflag) 0))
1054 (not zold)) "z" "")))
1055 (calc-graph-set-command "logscale" (if (not (equal str "")) str))))
1057 (defun calc-graph-line-style (style)
1059 (calc-graph-set-styles (and style (prefix-numeric-value style)) t))
1061 (defun calc-graph-point-style (style)
1063 (calc-graph-set-styles t (and style (prefix-numeric-value style))))
1065 (defun calc-graph-set-styles (lines points &optional yerr)
1068 (set-buffer calc-gnuplot-input)
1069 (or (calc-graph-find-plot nil nil)
1070 (error "No data points have been set!"))
1071 (let ((base (point))
1072 (mode nil) (lstyle nil) (pstyle nil)
1073 start end lenbl penbl errform)
1074 (re-search-forward "[,\n]")
1076 (setq end (point) start end)
1078 (if (looking-at "[^,\n]*[^,\n \t]\\([ \t]+with\\)")
1080 (setq start (match-beginning 1))
1081 (goto-char (match-end 0))
1082 (if (looking-at "[ \t]+\\([a-z]+\\)")
1083 (setq mode (buffer-substring (match-beginning 1)
1085 (if (looking-at "[ \ta-z]+\\([0-9]+\\)")
1086 (setq lstyle (string-to-number
1087 (buffer-substring (match-beginning 1)
1089 (if (looking-at "[ \ta-z]+[0-9]+[ \t]+\\([0-9]+\\)")
1090 (setq pstyle (string-to-number
1091 (buffer-substring (match-beginning 1)
1094 (setq lenbl (or (equal mode "lines")
1095 (equal mode "linespoints"))
1096 penbl (or (equal mode "points")
1097 (equal mode "linespoints")))
1101 lenbl (>= lines 0)))
1102 (setq lenbl (not lenbl)))
1106 penbl (>= points 0)))
1107 (setq penbl (not penbl))))
1108 (delete-region start end)
1112 (math-contains-sdev-p
1116 (re-search-backward ":\\(.*\\)\\}")
1117 (match-string 1))))))
1120 (insert " with yerrorbars")
1127 (if penbl "linespoints" "lines")
1128 (if penbl "points" "dots"))))
1129 (if (and pstyle (> pstyle 0))
1131 (if (and lstyle (> lstyle 0)) (int-to-string lstyle) "1")
1132 " " (int-to-string pstyle))
1133 (if (and lstyle (> lstyle 0))
1134 (insert " " (int-to-string lstyle)))))))
1135 (calc-graph-view-commands))
1137 (defun calc-graph-zero-x (flag)
1139 (calc-graph-set-command "noxzeroaxis"
1141 (<= (prefix-numeric-value flag) 0)
1142 (not (calc-graph-find-command "noxzeroaxis")))
1145 (defun calc-graph-zero-y (flag)
1147 (calc-graph-set-command "noyzeroaxis"
1149 (<= (prefix-numeric-value flag) 0)
1150 (not (calc-graph-find-command "noyzeroaxis")))
1153 (defun calc-graph-name (name)
1154 (interactive "sTitle for current curve: ")
1157 (set-buffer calc-gnuplot-input)
1158 (or (calc-graph-find-plot nil nil)
1159 (error "No data points have been set!"))
1160 (let ((base (point))
1163 (re-search-forward "[,\n]\\|[ \t]+with")
1164 (setq end (match-beginning 0))
1166 (if (looking-at "[^,\n]*[^,\n \t]\\([ \t]+title\\)")
1168 (goto-char (match-beginning 1))
1169 (delete-region (point) end))
1171 (insert " title " (prin1-to-string name))))
1172 (calc-graph-view-commands))
1174 (defun calc-graph-hide (flag)
1177 (and (calc-graph-find-plot nil nil)
1179 (or (looking-at "{")
1180 (error "Can't hide this curve (wrong format)"))
1182 (if (looking-at "*")
1183 (if (or (null flag) (<= (prefix-numeric-value flag) 0))
1185 (if (or (null flag) (> (prefix-numeric-value flag) 0))
1188 (defun calc-graph-header (title)
1189 (interactive "sTitle for entire graph: ")
1190 (calc-graph-set-command "title" (if (not (equal title ""))
1191 (prin1-to-string title))))
1193 (defun calc-graph-border (flag)
1195 (calc-graph-set-command "noborder"
1197 (<= (prefix-numeric-value flag) 0)
1198 (not (calc-graph-find-command "noborder")))
1201 (defun calc-graph-grid (flag)
1203 (calc-graph-set-command "grid" (and (if flag
1204 (> (prefix-numeric-value flag) 0)
1205 (not (calc-graph-find-command "grid")))
1208 (defun calc-graph-key (flag)
1210 (calc-graph-set-command "key" (and (if flag
1211 (> (prefix-numeric-value flag) 0)
1212 (not (calc-graph-find-command "key")))
1215 (defun calc-graph-num-points (res flag)
1216 (interactive "sNumber of data points: \nP")
1218 (if (> (prefix-numeric-value flag) 0)
1220 (message "Default resolution is %d"
1221 calc-graph-default-resolution)
1222 (setq calc-graph-default-resolution (string-to-number res)))
1224 (message "Default 3D resolution is %d"
1225 calc-graph-default-resolution-3d)
1226 (setq calc-graph-default-resolution-3d (string-to-number res))))
1227 (calc-graph-set-command "samples" (if (not (equal res "")) res))))
1229 (defun calc-graph-device (name flag)
1230 (interactive "sDevice name: \nP")
1231 (if (equal name "?")
1233 (calc-gnuplot-command "set terminal")
1234 (calc-graph-view-trail))
1236 (if (> (prefix-numeric-value flag) 0)
1238 (message "Default GNUPLOT device is \"%s\""
1239 calc-gnuplot-default-device)
1240 (setq calc-gnuplot-default-device name))
1242 (message "GNUPLOT device for Print command is \"%s\""
1243 calc-gnuplot-print-device)
1244 (setq calc-gnuplot-print-device name)))
1245 (calc-graph-set-command "terminal" (if (not (equal name ""))
1248 (defun calc-graph-output (name flag)
1249 (interactive "FOutput file name: \np")
1250 (cond ((string-match "\\<[aA][uU][tT][oO]$" name)
1252 ((string-match "\\<[tT][tT][yY]$" name)
1254 ((string-match "\\<[sS][tT][dD][oO][uU][tT]$" name)
1255 (setq name "STDOUT"))
1256 ((equal (file-name-nondirectory name) "")
1258 (t (setq name (expand-file-name name))))
1260 (if (> (prefix-numeric-value flag) 0)
1262 (message "Default GNUPLOT output file is \"%s\""
1263 calc-gnuplot-default-output)
1264 (setq calc-gnuplot-default-output name))
1266 (message "GNUPLOT output file for Print command is \"%s\""
1267 calc-gnuplot-print-output)
1268 (setq calc-gnuplot-print-output name)))
1269 (calc-graph-set-command "output" (if (not (equal name ""))
1270 (prin1-to-string name)))))
1272 (defun calc-graph-display (name)
1273 (interactive "sX display name: ")
1275 (message "Current X display is \"%s\""
1276 (or calc-gnuplot-display "<none>"))
1277 (setq calc-gnuplot-display name)
1278 (if (calc-gnuplot-alive)
1279 (calc-gnuplot-command "exit"))))
1281 (defun calc-graph-geometry (name)
1282 (interactive "sX geometry spec (or \"default\"): ")
1284 (message "Current X geometry is \"%s\""
1285 (or calc-gnuplot-geometry "default"))
1286 (setq calc-gnuplot-geometry (and (not (equal name "default")) name))
1287 (if (calc-gnuplot-alive)
1288 (calc-gnuplot-command "exit"))))
1290 (defun calc-graph-find-command (cmd)
1293 (set-buffer calc-gnuplot-input)
1294 (goto-char (point-min))
1295 (if (re-search-forward (concat "^set[ \t]+" cmd "[ \t]*\\(.*\\)$") nil t)
1296 (buffer-substring (match-beginning 1) (match-end 1)))))
1298 (defun calc-graph-set-command (cmd &rest args)
1301 (set-buffer calc-gnuplot-input)
1302 (goto-char (point-min))
1303 (if (re-search-forward (concat "^set[ \t]+" cmd "[ \t\n]") nil t)
1307 (let ((end (point)))
1309 (delete-region (point) (1+ end))))
1310 (if (calc-graph-find-plot t t)
1311 (if (eq (preceding-char) ?\n)
1313 (goto-char (1- (point-max)))))
1314 (if (and args (car args))
1318 (insert "set " (mapconcat 'identity (cons cmd args) " ") "\n"))))
1319 (calc-graph-view-commands))
1321 (defun calc-graph-command (cmd)
1322 (interactive "sGNUPLOT command: ")
1325 (calc-graph-view-trail)
1326 (calc-gnuplot-command cmd)
1327 (accept-process-output)
1328 (calc-graph-view-trail)))
1330 (defun calc-graph-kill (&optional no-view)
1332 (calc-graph-delete-temps)
1333 (if (calc-gnuplot-alive)
1335 (or no-view (calc-graph-view-trail))
1336 (let ((calc-graph-no-wait t))
1337 (calc-gnuplot-command "exit"))
1339 (if (process-status calc-gnuplot-process)
1340 (delete-process calc-gnuplot-process))
1341 (setq calc-gnuplot-process nil))))
1343 (defun calc-graph-quit ()
1345 (if (get-buffer-window calc-gnuplot-input)
1346 (calc-graph-view-commands t))
1347 (if (get-buffer-window calc-gnuplot-buffer)
1348 (calc-graph-view-trail t))
1349 (calc-graph-kill t))
1351 (defun calc-graph-view-commands (&optional no-need)
1353 (or calc-graph-no-auto-view (calc-graph-init-buffers))
1354 (calc-graph-view calc-gnuplot-input calc-gnuplot-buffer (null no-need)))
1356 (defun calc-graph-view-trail (&optional no-need)
1358 (or calc-graph-no-auto-view (calc-graph-init-buffers))
1359 (calc-graph-view calc-gnuplot-buffer calc-gnuplot-input (null no-need)))
1361 (defun calc-graph-view (buf other-buf need)
1363 (or calc-graph-no-auto-view
1364 (if (setq win (get-buffer-window buf))
1366 (and (eq buf calc-gnuplot-buffer)
1369 (not (pos-visible-in-window-p (point-max) win))))
1372 (bury-buffer other-buf)
1373 (let ((curwin (selected-window)))
1375 (switch-to-buffer nil)
1376 (select-window curwin))))
1377 (if (setq win (get-buffer-window other-buf))
1378 (set-window-buffer win buf)
1379 (if (eq major-mode 'calc-mode)
1381 (< (window-height) (1- (frame-height))))
1382 (display-buffer buf))
1383 (switch-to-buffer buf)))))
1386 (if (and (eq buf calc-gnuplot-buffer)
1387 (setq win (get-buffer-window buf))
1388 (not (pos-visible-in-window-p (point-max) win)))
1390 (goto-char (point-max))
1391 (vertical-motion (- 6 (window-height win)))
1392 (set-window-start win (point))
1393 (goto-char (point-max)))))
1394 (or calc-graph-no-auto-view (sit-for 0))))
1396 (defun calc-gnuplot-check-for-errors ()
1400 (set-buffer calc-gnuplot-buffer)
1401 (goto-char calc-gnuplot-last-error-pos))
1402 (re-search-forward "^[ \t]+\\^$" nil t)
1403 (goto-char (point-max))
1404 (setq calc-gnuplot-last-error-pos (point-max))))
1405 (calc-graph-view-trail)))
1407 (defun calc-gnuplot-command (&rest args)
1409 (let ((cmd (concat (mapconcat 'identity args " ") "\n")))
1410 (accept-process-output)
1412 (set-buffer calc-gnuplot-buffer)
1413 (calc-gnuplot-check-for-errors)
1414 (goto-char (point-max))
1415 (setq calc-gnuplot-trail-mark (point))
1416 (or (>= calc-gnuplot-version 3)
1418 (set-marker (process-mark calc-gnuplot-process) (point))
1419 (process-send-string calc-gnuplot-process cmd)
1420 (if (get-buffer-window calc-gnuplot-buffer)
1421 (calc-graph-view-trail))
1422 (accept-process-output (and (not calc-graph-no-wait)
1423 calc-gnuplot-process))
1424 (calc-gnuplot-check-for-errors)
1425 (if (get-buffer-window calc-gnuplot-buffer)
1426 (calc-graph-view-trail)))))
1428 (defun calc-graph-init-buffers ()
1429 (or (and calc-gnuplot-buffer
1430 (buffer-name calc-gnuplot-buffer))
1431 (setq calc-gnuplot-buffer (get-buffer-create "*Gnuplot Trail*")))
1432 (or (and calc-gnuplot-input
1433 (buffer-name calc-gnuplot-input))
1434 (setq calc-gnuplot-input (get-buffer-create "*Gnuplot Commands*"))))
1436 (defun calc-graph-init ()
1437 (or (calc-gnuplot-alive)
1438 (let ((process-connection-type t)
1440 (if calc-gnuplot-process
1442 (delete-process calc-gnuplot-process)
1443 (setq calc-gnuplot-process nil)))
1444 (calc-graph-init-buffers)
1446 (set-buffer calc-gnuplot-buffer)
1447 (insert "\nStarting gnuplot...\n")
1448 (setq origin (point)))
1449 (setq calc-graph-last-device nil)
1450 (setq calc-graph-last-output nil)
1452 (let ((args (append (and calc-gnuplot-display
1453 (not (equal calc-gnuplot-display
1454 (getenv "DISPLAY")))
1456 calc-gnuplot-display))
1457 (and calc-gnuplot-geometry
1459 calc-gnuplot-geometry)))))
1460 (setq calc-gnuplot-process
1461 (apply 'start-process
1466 (set-process-query-on-exit-flag calc-gnuplot-process nil))
1468 (error "Sorry, can't find \"%s\" on your system"
1469 calc-gnuplot-name)))
1471 (set-buffer calc-gnuplot-buffer)
1472 (while (and (not (save-excursion
1474 (search-forward "gnuplot> " nil t)))
1475 (memq (process-status calc-gnuplot-process) '(run stop)))
1476 (accept-process-output calc-gnuplot-process))
1477 (or (memq (process-status calc-gnuplot-process) '(run stop))
1478 (error "Unable to start GNUPLOT process"))
1482 "G N U P L O T.*\n.*version \\([0-9]+\\)\\." nil t))
1483 (setq calc-gnuplot-version (string-to-number (buffer-substring
1486 (setq calc-gnuplot-version 1))
1487 (goto-char (point-max)))))
1489 (set-buffer calc-gnuplot-input)
1490 (if (= (buffer-size) 0)
1491 (insert "# Commands for running gnuplot\n\n\n")
1492 (or calc-graph-no-auto-view
1493 (eq (char-after (1- (point-max))) ?\n)
1495 (goto-char (point-max))
1498 (provide 'calc-graph)
1500 ;; arch-tag: e4b06a52-c386-4d54-a2bb-7c0a0ef533c2
1501 ;;; calc-graph.el ends here