[ome-users] OMERO sub-folders

[Douglas Russell]

Hi Christophe,

Indeed this is a much desired feature! In the simplest possible terms, the
reason we do not have sub-folders is because it is hard to do this well in
a database especially once you consider permissions, in the filesystem, if
it's above you, it is the master of you. This is not so in a database.

However, I'm encouraged to find that you have discovered OMERO.webtagging.
Yes, it can be used to similar (and I believe in many ways, superior)
effect than infinitely nested hierarchies. The tagsearch feature is a very
simple implementation of a visualisation of the tag structure you have
created. I have plans to implement a tree-like view of the tagged data, but
this was stalled somewhat while I have upgraded many components of
OMERO.web to support this work. I hope to return to it at the end of the
year.

The idea is to display a tree-like structure that is familiar to the users,
but is in fact working similar to tagsearch, refining the search results
each time the user 'navigates' into a 'directory'. This functionality will
come with a serious caveat, which is that it will not scale to huge amounts
of data/tags because the queries will start to run very slowly because of
how the tags are stored in the system. I hope to create this proof of
concept to show that tags are powerful and useful with the idea that
utilising new technology in OMERO in the future, (e.g. graph databases) we
are able to scale this up.

Thanks,

Douglas

On 29 October 2014 17:35, Christophe TREFOIS <christophe.trefois at uni.lu>
wrote:

>  Dear all,
>
>
>
> Is there a specific reasoning as to why it is not possible to create
> multiple sub-folders to sort images in ?
>
>
>
> My understanding is that together with OMERO.webtagging a rather complex
> structure can be created where users can search for and find their images.
> However, traditionally, users are used to store their images in multiple
> sub-folders.
>
>
>
> Perhaps somebody could elaborate a bit and thus enlighten our staff? J
>
>
>
> Thanks,
>
>
>
>
> *................................................................................*
>
> *Dr. Christophe TREFOIS, **Dipl.-Ing.*
> *Doctor in Biology*
>
> Senior Technical Specialist
>
> UNIVERSITÉ DU LUXEMBOURG
>
>
>
> LUXEMBOURG CENTRE FOR SYSTEMS BIOMEDICINE
>
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>
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>
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>
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>
>
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