[DAS] 1 Mb detailed view limit

Tony Cox avc@sanger.ac.uk
Tue, 14 May 2002 17:26:32 +0100 (BST)


On Tue, 14 May 2002, Simon Hearsey wrote:

+>Dear Tony et al, I should have been more clear, I am running the Ensembl
+>server locally as well as a local DAS server.  I have tried, unfruitfully,
+>to find where the configuration is that sets the limit to 1Mb.  Can you
+>point me in the direction of the code? Thanks, Simon

It is in the module WebUserConfig::contigviewtop ('default_vc_size')

cheers

Tony

+>
+>-----Original Message-----
+>From: Tony Cox [mailto:avc@sanger.ac.uk]
+>Sent: Tuesday, May 14, 2002 12:45 AM
+>To: Simon Hearsey
+>Cc: das@biodas.org
+>Subject: Re: [DAS] 1 Mb detailed view limit
+>
+>
+>On Mon, 13 May 2002, Simon Hearsey wrote:
+>
+>Dear Simon,
+>
+>+>Is there a way to change the limit on the Contigview so that it will display
+>+>more than 1 megabace?  I'm running an Ensembl server and a DAS (using
+>+>tomcat4) server.  
+>
+>my condolences ;)
+>
+>+>I get the "Detailed view is not available for the current
+>+>2.1 Mb view." type message if I try to display features for a region greater
+>+>that 1 Mb. Thanks, Simon Hearsey
+>
+>This is an internal limit imposed for performance reasons at the Ensembl server
+>end. We could allow users to select arbitrary genome region but it could cripple
+>the server if somebody wanted to look at every feature on chromosome N for
+>instance -  of course they would get bored waiting for the answer amd go off and
+>do the same query on a different chromosome....
+>
+>...meanwhile back at the ranch we are watching servers die painful deaths.
+>
+>We could review the contigview limit but in all honesty I suspect the mimit is
+>never going to be ideal for everybody and we have to draw a balance between the
+>needs of specialised uers and general performance for the masses.
+>
+>Of course, the solution to this is for you to have a local Ensembl installation
+>where you can change the defaults to whatever you need.
+>
+>regards
+>
+>Tony
+>
+>+>
+>+>
+>+>
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+>
+>******************************************************
+>Tony Cox			Email:avc@sanger.ac.uk
+>Sanger Institute		WWW:www.sanger.ac.uk
+>Wellcome Trust Genome Campus	Webmaster
+>Hinxton				Tel: +44 1223 834244
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+>
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******************************************************
Tony Cox			Email:avc@sanger.ac.uk
Sanger Institute		WWW:www.sanger.ac.uk
Wellcome Trust Genome Campus	Webmaster
Hinxton				Tel: +44 1223 834244
Cambs. CB10 1SA			Fax: +44 1223 494919
******************************************************