"Eric Schulte" <schulte.eric@gmail.com> writes:

> josephzxu@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