[DAS] Question about DAS clients and DAS registry servers

Andy Jenkinson andy.jenkinson at ebi.ac.uk
Mon Jan 12 13:05:32 UTC 2009


Hi Dan,

DAS clients tend to be different depending on the type of data you're 
looking at, and have different capabilities. For example, Ensembl is a 
well supported client for (mostly) genomic data, and implements all the 
most recent developments such as the DAS registry (via the sources 
command). However it makes no use of reference servers, instead all 
reference data is stored locally in a database. Dasty is more focussed 
on protein data. GBrowse is another genomic client, but IIRC does not 
know about the DAS registry.

Regarding setting up a local DAS registry, what is this for? If for 
instance you were using Ensembl, any server that implements the sources 
command can potentially be a "registry" from a programmatic point of 
view, so unless you want to have a manual process where you can use a 
GUI to register a souce, you probably don't need to implement a copy of 
the real thing.

Looks like the biodas wiki has been getting spammed, must have started 
recently. I'll talk to the admins about sorting it out. We'll probably 
need to update the registration process.

Cheers,
Andy

Dan Bolser wrote:
> Hi all,
> 
> I'm relatively new to DAS, and I have been playing with setting up a
> DAS server using Dazzle. Now that I have created my reference and
> annotation data sources, naturally enough I would like to start
> browsing and visualizing the data. So...
> 
> Q1) Which DAS client do you recommend for a beginner working with Dazzle?
> 
> 
> I am working in a Linux OS, and I am looking at gene predictions on a
> chromosome as well as 'similarity' features between the chromosome and
> several 'clones' from a closely related organism.
> 
> To organize my research into the various clients available, I created
> the following page on Wikipedia:
> 
> http://en.wikipedia.org/wiki/Distributed_Annotation_System/Clients
> 
> 
> That table is still quite rough, so please feel free to contribute
> information there. I put the table into a sub-page of the DAS page so
> that sites like http://www.biodas.org/ can easily 'transclude' this
> information. I'm not sure if that's sensible or not yet, so let me
> know what you think.
> 
> 
> Since we are exploring the various possibilities of using DAS with our
> projects, is it possible to set up a local (private) DAS registry
> server? This would be useful for testing purposes, especially as we
> may be initially working with unpublished data.
> 
> Q2) What steps are required for setting up a local or a secure DAS registry?
> 
> 
> Thanks very much for any help with the above two questions.
> 
> Dan
> 
> P.S. Is this spam? http://www.biodas.org/wiki/Smother or some strange
> data encoding that I don't understand? I've seen more than one page
> that looks like this. e.g. http://www.biodas.org/wiki/Selflessnesss -
> Should I go ahead and delete this pages?
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