Re: How can I calculate the "age" of a headline?

[Samuel Wales <samologist@gmail.com>]

i call these time spans.

to me, it would be excellent as a custom timestamp format.

this requires a patch to org at this location:

	Modified lisp/org.el
diff --git a/lisp/org.el b/lisp/org.el
index b1dc1ce..4497693 100644
--- a/lisp/org.el
+++ b/lisp/org.el
@@ -16814,6 +16814,8 @@ The command returns the inserted time stamp."
 	  tf (funcall (if with-hm 'cdr 'car) org-time-stamp-custom-formats)
 	  time (org-fix-decoded-time t1)
 	  str (org-add-props
+                  ;; fixme alpha make it so that you can run a function
+                  ;; (alpha-org-annotate-ts-with-time-span
 		  (format-time-string
 		   (substring tf 1 -1) (apply 'encode-time time))
 		  nil 'mouse-face 'highlight)

then the code for the time spans is as follows.

(defun alpha-org-time-span-as-string (&optional from now)
  "Return the time span from now
to the active or inactive Org timestamp at point, or nil.

+1 means tomorrow.
 0 means today.
-1 means yesterday.

from and now are daynums.
"
  ;; (alpha-org-time-span from now)
  (let ((from (or from (alpha-org-daynum-from-ts-at-point)))
        (now (or now (alpha-org-daynum-from-now))))
    (when (and from now)
      (alpha-org-format-time-span (- from now)))))
(defun alpha-org-format-time-span (span)
  ;; + makes the numbers line up better
  ;; fixme emacs bug with 0
  (format " = %+-3g" span))
  ;; (format " [= %+-3g]" span))

(defun alpha-org-daynum-from-ts (ts)
  (time-to-days (org-time-string-to-time ts)))
;; (alpha-org-daynum-from-now)
(defun alpha-org-daynum-from-now ()
  (alpha-org-daynum-from-ts "<now>"))
(defun alpha-org-daynum-from-ts-at-point ()
  ;; inactive too
  ;; (if ts
  ;; (alpha-org-daynum-from-ts ts)
  (when (org-at-timestamp-p t)
    (alpha-org-daynum-from-ts
     (substring (match-string 1) 0 10))))





On 8/19/14, M <Elwood151@web.de> wrote:
> In my task lists, I'm working with scheduled and deadline dates.
> However, it would also often be very interesting, how "old" a task is, how
> long it is lurking around on my lists..
>
> Therefore it would be interesting to find the oldest timestamp below this
> heading and calculate the difference in days to today.
>
> Is that possible with org-mode already?
> Could I display this information in a tabular agenda view in a column?
>
> Kind regards
>
> Martin
>
>
>
>


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