[Bug 151233] New: Show statistics for all images in (sub-)folders

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           Summary: Show statistics for all images in (sub-)folders
           Product: digikam
           Version: unspecified
          Platform: Ubuntu Packages
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: wishlist
          Priority: NOR
         Component: general
        AssignedTo: digikam-devel kde org
        ReportedBy: bug christianmayer de


Version:           0.9.2-final (using KDE KDE 3.5.8)
Installed from:    Ubuntu Packages

I'd like to be able to show statistics about all images in an selected folder (with the ability to select multiple folders at the same time...)

Especially I'm interested about:
- how is the distribution of focal lengths (directly and converted to a normal cameral w/o crop)
  => should I buy a wide angle or an tele next...
- how it the distribution of used aperture
  => can I get the f/4 or do I need an f/2.8 lens next...

There are tools that give me that information through the command line, but integrated in digikam would be great (and doesn't the new database scheme support exactly such an query?)
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[Gilles Caulier-4]

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caulier.gilles gmail com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|general                     |Metadata
            Summary|Show statistics for all     |Show statistics for all
                   |images in (sub-)folders     |images in (sub-)folders



------- Additional Comments From caulier.gilles gmail com  2007-10-23 14:11 -------
Christian,

The new database format used with new 0.10.0 release (KDE4) will store these values.

http://websvn.kde.org/trunk/extragear/graphics/digikam/DBSCHEMA.ODS?view=log

Gilles Caulier
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------- Additional Comments From bug christianmayer de  2007-10-23 14:45 -------
Gilles,

then I did guess correctly.

So I only want an "histogram" of the information in ImageMetadata for all pictures in the selected folder(s).
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[Arnd Baecker]

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------- Additional Comments From arnd.baecker web de  2007-10-23 15:02 -------
Doing a good histogram for this is non-trivial:
According to my experience with a home-brew solution,
the bin-width to be chosen very much depends on the number of entries.
Moreover, it can become very spiked. And a separation according
to lenses would be helpful as well.

Also: where should one put such a statistical information?
Maybe another side-bar could carry the needed plots,
together with a selection of all lenses or specific lenses.
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------- Additional Comments From bug christianmayer de  2007-10-23 16:00 -------
> According to my experience with a home-brew solution,
> the bin-width to be chosen very much depends on the number of entries.

Yes, that's not that easy. If there's no easy way to determine the width (I'd *try* e.g. (max-min)/10 or 20...) it could be made setable.

A custom query could help here. How many pictures have a focal length > 100mm?

> Moreover, it can become very spiked.

Why not? I'm interested in the values and not in an "pretty" histogram...

> And a separation according to lenses would be helpful as well.

As an option/filter: yes.
But *I* am mainly interested in all pictures at once (as I want to decide which type of lens I should buy next)

> Also: where should one put such a statistical information?

I was thinking of a right click context menu (e.g. named "Statistics") - but an side bar also would be fine.
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------- Additional Comments From rockprinzess gmail com  2008-04-09 18:30 -------
Having read this conversation at flickr
http://www.flickr.com/groups/olympus_e500/discuss/72157594427198068

I thought it would be pretty useful and a nice feature to digikam!

So, here comes my vote for this "bug" errrr wish ;)
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------- Additional Comments From simon margo student utwente nl  2008-06-21 17:59 -------
I saw this link: http://www.cpr.demon.nl/prog_plotf.html
posted on http://forums.dpreview.com/forums/read.asp?forum=1037&message=27818592

I thought it would be a nifty feature for digikam, and apparently I'm not alone ;-)

/Simon
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simon margo student utwente nl changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
      everconfirmed|0                           |1



------- Additional Comments From simon margo student utwente nl  2008-06-21 17:59 -------
*** This bug has been confirmed by popular vote. ***
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