Re: how do I search state change dates?

["Christopher W. Ryan" <cryan@binghamton.edu>]

This looks promising. However, the example at the link you referenced
seems to have its state changes inside a LOGBOOK property drawer. My
state changes are not inside a drawer. See excerpt below.  To change the
state, say from TODO to READING, I use C-c C-t and then can choose one
of my pre-specified states.  Should I put my state changes in a LOGBOOK
drawer? If so, how does that work?

** DONE Responsible Men		 :fiction:BUlibrary:
   - State "DONE"       from "READING"    [2018-11-18 Sun 23:17]
   - State "READING"    from "TODO"       [2018-11-04 Sun 23:17]
   :PROPERTIES:
   :AUTHORLNAME: Schwarzschild
   :AUTHORFNAME: Edward
   :ISBN: 156512409X
   :END:

Thanks.

--Chris Ryan

Michael Welle wrote:
> Hello,
> 
> "Christopher W. Ryan" <cryan@binghamton.edu> writes:
> 
>> I try to keep track of books I want to read, and when I eventually read
>> them.  I use TODO keyword for books I intend to read, and I change the
>> state to READING and then DONE, as appropriate. Each state change gets a
>> date/time stamp.
> at [0] you will find a bit of code (org-task-dump-logs.el) that
> retrieves all the log data for a given task. Maybe that is helpful if
> you extend it with a loop that iterates over all tasks of a file.
> 
> Regards
> hmw
> 
> [0] https://www.c0t0d0s0.de/otdl/otdl.html
>