[OLPC library] [support-gang] Image sizes on the wiki was: working hard @ Boston's

Sun Apr 22 18:01:55 EDT 2012

Thank you
Down converting is almost easy, the reverse is not.
The network and browser impact is real.

$ convert Pictures/Beach/dsc_1556.jpg -scale 5% ./thumbnails/Beach==dsc_1556.jpg
$ ls -l
-rw-r--r-- 1  me me 5798595 2012-04-04 18:29 ./Pictures/Beach/dsc_1556.jpg
-rw-rw-r-- 1 me me 61503    2012-04-22 14:51 ./thumbnails/Beach==dsc_1556.jpg

On Sun, Apr 22, 2012 at 12:49 PM, Christoph Derndorfer
<e0425826 at student.tuwien.ac.at> wrote:
> Okay, noted.
>
> I'll try to keep that in mind as I work on some of my remaining chapters.
> Though in general we probably won't get people to recreate all their
> screenshots in the original size again so we'll have to work with what we've
> got.
>
> Cheers,
> Christoph
>
>
> On Sun, Apr 22, 2012 at 2:09 AM, Samuel Klein <sj at laptop.org> wrote:
>>
>> I think it is easier to just upload the high res version once, even if
>> you explicitly mean to use one of the smaller versions for some
>> offline project.
>>
>> Fred - you are right that the /directory trees/ of thumbnails are now
>> not browsable,but all of the individual thumbnails are world-readable.
>>
>> http://wiki.laptop.org/images/thumb/6/6c/Green_and_white_machine.jpg/150px-Green_and_white_machine.jpg
>>
>> SJ
>>
>> On Sat, Apr 21, 2012 at 8:51 AM, Christoph Derndorfer
>> <e0425826 at student.tuwien.ac.at> wrote:
>> > On Wed, Apr 11, 2012 at 3:42 PM, Frederick Grose <fgrose at gmail.com>
>> > wrote:
>> >>
>> >> On Sun, Apr 8, 2012 at 1:38 PM, Christoph Derndorfer
>> >> <e0425826 at student.tuwien.ac.at> wrote:
>> >>>
>> >>> On Sat, Apr 7, 2012 at 8:31 PM, S Page <skierpage at gmail.com> wrote:
>> >>>>
>> >>>> On Fri, Apr 6, 2012 at 16:07, Christoph Derndorfer
>> >>>> <e0425826 at student.tuwien.ac.at> wrote:
>> >>>>
>> >>>> > If jumping over these extra hurdles bring a lot of value and can be
>> >>>> > described
>> >>>> > in simple terms then I'm all for it
>> >>>>
>> >>>> Good point.  I see you're writing "MISSING IMAGE", that's fine too.
>> >>>> My alternative lets a writer show a placeholder image, see
>> >>>> http://wiki.laptop.org/go/User:Skierpage#Placeholder_images . Either
>> >>>> way makes it easy to find missing images.
>> >>>>
>> >>>> I documented both under
>> >>>> http://wiki.laptop.org/go/Help_Activity_refresh#Images
>> >>>>
>> >>>> I notice the instructions say 800px wide screenshots. I think it's
>> >>>> faster/better to leave them at 1200 wide and tell the HTML or markup
>> >>>> to display them smaller.
>> >>>
>> >>>
>> >>> Hi there,
>> >>>
>> >>> thanks a lot for adding the instructions
>> >>> to http://wiki.laptop.org/go/Help_Activity_refresh#Images, much
>> >>> appreciated.
>> >>>
>> >>> As for the width of the screenshots we chose the 800px wide because
>> >>> that
>> >>> works well for consumption on the XOs (as it leaves plenty of space
>> >>> for a
>> >>> menu, etc.).
>> >>
>> >>
>> >> When a 1200x900 pixel image is uploaded to the wiki and then displayed
>> >> at
>> >> an alternate size, such as with the [[File:Screenshot
>> >> wanted.png|800px|ActivityName screenshot]] wiki code, then the wiki
>> >> resizes
>> >> and saves a .png copy of the image at 800 pixel width in an
>> >> /images/thumb/
>> >> branch folder.
>> >> See, for example, all the sizes saved here:
>> >>
>> >>
>> >> http://wiki.sugarlabs.org/images/thumb/9/95/Journal_tag_mockup_frm_gary_v1.png/
>> >>
>> >> (Direct navigation to the thumb branches on wiki.laptop.org has been
>> >> blocked.  One only sees the message, "Down for upgrades. Come back
>> >> tomorrow!")
>> >>
>> >> The 120px and 320px images are saved for the thumbnail and preview on
>> >> the
>> >> File page.  The others are generated when a new cropping width is
>> >> requested
>> >> by some wiki code.  This allows the wiki server to cache the images for
>> >> better performance.  This also means that the XO laptop, or any browser
>> >> does
>> >> not need to process the original image size.
>> >
>> >
>> > Hi Fred,
>> >
>> > sorry for the slow reply.
>> >
>> > Re-reading your message now I'm not sure what exactly you're suggesting
>> > here. It sounds to me like getting the thumbails out of the wiki
>> > afterwards
>> > is a bigger hassle than taking the 15 seconds it takes to resize the
>> > original image and upload that one. Or am I missing something here?
>> >
>> > Thanks,
>> > Christoph
>> >
>> >>
>> >>        --Fred
>> >>
>> >>> I see little value in keeping the 1200px wide version (with the
>> >>> exception
>> >>> of reducing one step in the image work) as we can't count on having
>> >>> the
>> >>> manpower to do extensive post-processing, resizing of all images,
>> >>> funky
>> >>> exporting, etc. once everyone leaves here in just over 48 hours...
>> >>>
>> >>> Christoph
>> >>>
>> >>> --
>> >>> Christoph Derndorfer
>> >>>
>> >>> volunteer, OLPC (Austria) [www.olpc.at]
>> >>> editor, OLPC News [www.olpcnews.com]
>> >>> contributor, TechnikBasteln [www.technikbasteln.net]
>> >>>
>> >>> e-mail: christoph at derndorfer.eu
>> >>
>> >>
>> >> _______________________________________________
>> >> support-gang mailing list
>> >> support-gang at lists.laptop.org
>> >> http://lists.laptop.org/listinfo/support-gang
>> >>
>> >
>> >
>> >
>> > --
>> > Christoph Derndorfer
>> >
>> > volunteer, OLPC (Austria) [www.olpc.at]
>> > editor, OLPC News [www.olpcnews.com]
>> > contributor, TechnikBasteln [www.technikbasteln.net]
>> >
>> > e-mail: christoph at derndorfer.eu
>> >
>> >
>> > _______________________________________________
>> > Library mailing list
>> > Library at lists.laptop.org
>> > http://lists.laptop.org/listinfo/library
>> >
>>
>>
>>
>> --
>> Samuel Klein          identi.ca:sj           w:user:sj          +1 617 529
>> 4266
>>
>
>
>
> --
> Christoph Derndorfer
>
> volunteer, OLPC (Austria) [www.olpc.at]
> editor, OLPC News [www.olpcnews.com]
> contributor, TechnikBasteln [www.technikbasteln.net]
>
> e-mail: christoph at derndorfer.eu
>
>
> _______________________________________________
> Library mailing list
> Library at lists.laptop.org
> http://lists.laptop.org/listinfo/library
>

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