joseph...@gmail.com writes:
> Hi:
>
> I've been trying to make candlestick plots with org-plot, and the only
> way I've found that I can do this is by specifying a custom script in
> the +PLOT options. However, I noticed that when I specify a script,
> all other +PLOT options I specify, such as with set: or line:, are
> completely ignored. I think it would be nice to allow the user to
> specify plot options in the latter manner along with custom scripts
> and just prepend the options to the script. This way, the user can use
> a single custom script to plot multiple data tables, while being able
> to set things like the title or range of the plot on a per-table
> basis.
That sounds like a great idea, the attached patch[1] *should* implement
the prepending of options to a script as you described above. It works
for me on one simple test. Please let me know if it works for you.
> Alternatively, I can also imagine giving the user the ability
> to hard code the exact plot commands right in the org file.
>
This second approach could work with "org-babel" --a library for
org-mode on which I am currently working--. I hope to add gnuplot as a
supported language to org-babel. Once this is done it will be possible
to write gnuplot source-code blocks which can then be fed table data
returning graphs for display or inclusion in org-mode files. Through
the "library of babel" functionality, these gnuplot code blocks could be
named, saved, and called from other org-mode files.
Cheers -- Eric
>
> Thanks for your time.
>
> Joseph
>
>
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Footnotes:
[1]
diff --git a/lisp/org-plot.el b/lisp/org-plot.el
index 78775a0..ae01aa2 100644
--- a/lisp/org-plot.el
+++ b/lisp/org-plot.el
@@ -181,9 +181,11 @@ and dependant variables."
(setf back-edge "") (setf front-edge "")))))
row-vals))
-(defun org-plot/gnuplot-script (data-file num-cols params)
+(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."
+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
@@ -238,7 +240,8 @@ NUM-COLS controls the number of columns plotted in a 2-d plot."
(add-to-script (concat "set timefmt \""
(or timefmt ;; timefmt passed to gnuplot
"%Y-%m-%d-%H:%M:%S") "\"")))
- (case type ;; plot command
+ (unless preface
+ (case type ;; plot command
('2d (dotimes (col num-cols)
(unless (and (equal type '2d)
(or (and ind (equal (+ 1 col) ind))
@@ -259,8 +262,8 @@ NUM-COLS controls the number of columns plotted in a 2-d plot."
('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 ")))
+ (add-to-script
+ (concat plot-cmd " " (mapconcat 'identity (reverse plot-lines) ",\\\n "))))
script)))
;;-----------------------------------------------------------------------------
@@ -328,10 +331,13 @@ line directly before or after the table."
;; write script
(with-temp-buffer
(if (plist-get params :script) ;; user script
- (progn (insert-file-contents (plist-get params :script))
- (goto-char (point-min))
- (while (re-search-forward "$datafile" nil t)
- (replace-match data-file nil nil)))
+ (progn (insert
+ (org-plot/gnuplot-script data-file num-cols params t))
+ (insert "\n")
+ (insert-file-contents (plist-get params :script))
+ (goto-char (point-min))
+ (while (re-search-forward "$datafile" nil t)
+ (replace-match data-file nil nil)))
(insert
(org-plot/gnuplot-script data-file num-cols params)))
;; graph table
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