Re: [Gmod-ajax] next generation sequencing visualization

[Mitch S. <mit...@be...>]

Dave Clements wrote:
> Mitch/Ian: does JBrowse support semantic browsing a la GBrowse, where 
> you can specify thresholds for switching from one view to the other?


In a sense, yes.  As you zoom in, the track for displaying features 
switches from showing a feature density histogram, to showing individual 
features, to showing features with labels and subfeatures.  There's 
currently not a general mechanism for switching from one kind of view to 
another (e.g., from a wiggle (image) track to a feature track); the 
feature track uses its knowledge about the number of features to choose 
the zoom thresholds where it makes those transitions, so those 
transitions are currently all implemented in FeatureTrack.

But it should be reasonably straightforward to add a new kind of track 
that switches between ImageTrack and FeatureTrack at a set threshold.

Mitch