[DAS] playing tricks with cgi viewers

Brian Gilman gilmanb@genome.wi.mit.edu
Fri, 14 Dec 2001 08:52:18 -0500 (EST)

Hello Cheung,

	This is neat. I'll try and put a little JSP enabled site up in a
few weeks time using our modules. So, if I understand this right, you are
doing something akin to a portal? Polling different sites and rendering
PNG's? That's pretty cool. I'll try and show the same sort of thing in the
java sode of life using DAS and we can compare approaches...The community
of DAS users will want the sort of functionality you are producing!


Brian Gilman <gilmanb@genome.wi.mit.edu>
Sr. Software Engineer MIT/Whitehead Inst. Center for Genome Research
One Kendall Square, Bldg. 300 / Cambridge, MA 02139-1561 USA
phone +1 617  252 1069 / fax +1 617 252 1902

On Fri, 14 Dec 2001, Cheung, Foo wrote:

> Hi all
> I have been playing a few tricks over the last few hours with das viewers
> and das servers over the internet.
> One of the goals I would like to see (and hopefully others would find this
> useful) is to get ALL the Das Servers up and running on a "single" cgi based
> Viewer sitting on your own home page with little or no coding at all! and
> ASAP. This goal has a few problems...there are some variations bewteen das
> servers and that some cgi viewers are able view some servers while others
> cannot. This will be more fragmented when you get some servers serving
> annotations by the DAS 2 protocol and then there will be slight differences
> between DAS 2 servers. Then add to this sercurity issues which has been a
> stumbling block for me... etc
> One way to quickly overcome all/most of this with little or no coding, is
> from "one das viewer", call upon many das viewers at one time and use each
> of their ability to return a subset of Das servers for a particular organism
> and hopefully by using a combination of viewers you will be able to return a
> single view containing a full set of servers.
> This is not ideal, obviously in the ideal situation you have one cgi DAS
> viewer without a "distributed viewer system" that returns all das servers of
> all versions ie. das v2 das v1, das v.9, das v.8, das v.bad, das v.2, das
> v.3 etc. But I cant see a cgi viewer capable of doing all this for some time
> to come, in the interim this method might be useful.
> I thus played a few ticks with my viewers and with the C elegans DASview
> over the internet (sorry Lincoln I probably should of asked first!).
> I used the C elegans  DasView to call data from the human reference server
> and returned it to TIGR as a png image, and within the same viewer and on
> the same view, I used my own viewers to grab the pngs from all the TIGR
> human servers and added it to the same view. Thus on one cgi viewer I can
> call upon many other viewers to return a set of pngs and view tham all in
> one web page/view. (I came up with this crazy idea because I could not
> directly pick up some of the non tigr human servers out there possibiliy
> because of sercurity issues I have here)
> I think doing it this way you may pick up all DAS servers with very little
> or no coding at all and view it on one cgi DAS viewer on your home page :)
> using this sort of "distributed viewer system". As I said this is not ideal
> but just a lazy thought.
> The dasviewer I was experimenting with can be found below:
> (http://www.tigr.org/docs/tigr-scripts/nhgi_scripts/das_human_test/dasview_h
> uman)
> I will be interested to hear any thoughts
> Foo
> I know this is written very badly! but its 5.30 am and I have my finals
> tommorrow :(
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