@gmod/jbrowse
Version:
JBrowse - client-side genome browser
89 lines (85 loc) • 25.8 kB
HTML
<html lang="en"><head><meta charSet="utf-8"/><meta http-equiv="X-UA-Compatible" content="IE=edge"/><title>JBrowse 1.8.0: opens local files, new BAM track types, new plugin system · JBrowse</title><meta name="viewport" content="width=device-width"/><meta name="generator" content="Docusaurus"/><meta name="description" content="JBrowse 1.8.0 is finally here, with some great new features, and lots of smaller improvements."/><meta name="docsearch:language" content="en"/><meta property="og:title" content="JBrowse 1.8.0: opens local files, new BAM track types, new plugin system · JBrowse"/><meta property="og:type" content="website"/><meta property="og:url" content="https://jbrowse.org/blog/2013/01/31/jbrowse-1-8-0-index.html"/><meta property="og:description" content="JBrowse 1.8.0 is finally here, with some great new features, and lots of smaller improvements."/><meta name="twitter:card" content="summary"/><link rel="shortcut icon" href="/img/favicon.ico"/><link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/highlight.js/9.12.0/styles/default.min.css"/><link rel="alternate" type="application/atom+xml" href="https://jbrowse.org/blog/atom.xml" title="JBrowse Blog ATOM Feed"/><link rel="alternate" type="application/rss+xml" href="https://jbrowse.org/blog/feed.xml" title="JBrowse Blog RSS Feed"/><script type="text/javascript" src="https://buttons.github.io/buttons.js"></script><link rel="stylesheet" href="/css/main.css"/></head><body class="sideNavVisible separateOnPageNav"><div class="fixedHeaderContainer"><div class="headerWrapper wrapper"><header><a href="/"><h2 class="headerTitle">JBrowse</h2></a><div class="navigationWrapper navigationSlider"><nav class="slidingNav"><ul class="nav-site nav-site-internal"><li class="siteNavGroupActive"><a href="/blog" target="_self">Blog</a></li><li class=""><a href="/docs/installation.html" target="_self">Documentation</a></li><li class=""><a href="/en/demos.html" target="_self">Demos</a></li><li class=""><a href="/en/developers.html" target="_self">Developers</a></li><li class=""><a href="/en/contact.html" target="_self">Contact</a></li><li class=""><a href="/en/references.html" target="_self">References</a></li><li class=""><a href="/en/help.html" target="_self">Help</a></li></ul></nav></div></header></div></div><div class="navPusher"><div class="docMainWrapper wrapper"><div class="container docsNavContainer" id="docsNav"><nav class="toc"><div class="toggleNav"><section class="navWrapper wrapper"><div class="navBreadcrumb wrapper"><div class="navToggle" id="navToggler"><i></i></div><h2><i>›</i><span>All Blog Posts</span></h2><div class="tocToggler" id="tocToggler"><i class="icon-toc"></i></div></div><div class="navGroups"><div class="navGroup"><h3 class="navGroupCategoryTitle">All Blog Posts</h3><ul><li class="navListItem"><a class="navItem" href="/blog/2019/07/11/jbrowse-1-16-6.html">JBrowse 1.16.6 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2019/06/12/jbrowse-1-16-5.html">JBrowse 1.16.5 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2019/04/10/jbrowse-1-16-4.html">JBrowse 1.16.4 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2019/02/20/jbrowse-1-16-3.html">JBrowse 1.16.3 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2019/01/31/jbrowse-1-16-2.html">JBrowse 1.16.2 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2018/12/27/jbrowse-1-16-1.html">JBrowse 1.16.1 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2018/12/13/jbrowse-1-16-0.html">JBrowse 1.16.0 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2018/10/05/jbrowse-1-15-4.html">JBrowse 1.15.4 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2018/08/29/jbrowse-1-15-3.html">JBrowse 1.15.3 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2018/08/16/jbrowse-1.15.2-maintenance-release-index.html">JBrowse 1.15.2 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2018/08/01/jbrowse-1-15-1-index.html">JBrowse 1.15.1 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2018/07/19/jbrowse-1-15-0-release-index.html">JBrowse 1.15.0 release - CRAM support, CSI indexes, and on the desktop!</a></li><li class="navListItem"><a class="navItem" href="/blog/2018/06/04/jbrowse-1-14-2-index.html">JBrowse 1.14.2 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2018/05/02/jbrowse-1-14-1-maintenance-release-index.html">JBrowse 1.14.1 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2018/04/18/jbrowse-1-14-0-release-index.html">JBrowse 1.14.0 release - iframe-less embedding, BigBed support</a></li><li class="navListItem"><a class="navItem" href="/blog/2018/03/28/jbrowse-1-13-1-maintenance-release-index.html">JBrowse 1.13.1 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2018/03/15/jbrowse-1-13-0-release-index.html">JBrowse 1.13.0 release - now with webpack!</a></li><li class="navListItem"><a class="navItem" href="/blog/2018/02/28/jbrowse-1-12-5-maintenance-release-index.html">JBrowse 1.12.5 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2018/02/14/jbrowse-1-12-4-maintenance-release-index.html">JBrowse 1.12.4 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2017/05/02/jbrowse-1-12-3-index.html">JBrowse-1.12.3: Maintenance Release</a></li><li class="navListItem"><a class="navItem" href="/blog/2016/06/03/gsoc-students-do-cool-jbrowse-projects-index.html">GSoC Students Do Cool JBrowse Projects</a></li><li class="navListItem"><a class="navItem" href="/blog/2016/03/01/jbrowse-1-12-1-index.html">JBrowse-1.12.1: Maintenance Release</a></li><li class="navListItem"><a class="navItem" href="/blog/2016/02/25/state-of-the-browser-2016-index.html">State of the Browser, 2016</a></li><li class="navListItem"><a class="navItem" href="/blog/2015/12/17/jbrowse-1-12-0-index.html">JBrowse-1.12.0: Open new genome from FASTA, in-line refseqs, NeatFeatures, Desktop</a></li><li class="navListItem"><a class="navItem" href="/blog/2015/02/12/jbrowse-1-11-6-index.html">JBrowse-1.11.6 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2014/09/04/jbrowse-1-11-5-index.html">JBrowse-1.11.5 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2014/05/14/jbrowse-1-11-4-maintenance-release-index.html">JBrowse-1.11.4 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2014/03/07/jbrowse-1-11-3-index.html">JBrowse 1.11.3 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2014/02/12/tutorial-exploring-structural-variation-index.html">Tutorial: exploring structural variation using JBrowse, from the tomato 150+ re-seq project</a></li><li class="navListItem"><a class="navItem" href="/blog/2014/02/10/jbrowse-1-11-2-index.html">JBrowse 1.11.2 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2014/01/07/jbrowse-1-11-1-index.html">JBrowse 1.11.1 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/12/19/jbrowse-1-11-0-index.html">JBrowse 1.11.0: hierarchical track selector, easier configuration, summary mode</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/12/10/jbrowse-1-10-12-index.html">JBrowse 1.10.12 maintenance release (please upgrade!)</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/12/03/jbrowse-1-10-11-index.html">JBrowse 1.10.11 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/11/21/jbrowse-1-10-10-index.html">JBrowse 1.10.10 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/11/08/jbrowse-1-10-9-index.html">JBrowse 1.10.9 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/10/25/jbrowse-1-10-8-index.html">JBrowse 1.10.8 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/10/15/jbrowse-1-10-7-index.html">JBrowse 1.10.7 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/10/07/jbrowse-1-10-6-index.html">JBrowse 1.10.6 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/10/03/jbrowse-1-10-5-index.html">JBrowse 1.10.5 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/09/23/jbrowse-1-10-4-index.html">JBrowse 1.10.4 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/09/04/jbrowse-1-10-3-index.html">JBrowse 1.10.3 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/08/15/jbrowse-1-10-2-index.html">JBrowse 1.10.2 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/08/06/jbrowse-1-10-1-maintenance-release-index.html">JBrowse 1.10.1 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/07/30/jbrowse-1-10-0-index.html">JBrowse 1.10.0: Combination tracks, better feature tracks, more glyphs, SPARQL support, and track pinning!</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/07/05/jbrowse-1-9-8-index.html">JBrowse 1.9.8 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/07/02/about-jbrowse-version-numbers-index.html">About JBrowse version numbers</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/06/25/jbrowse-1-9-7-maintenance-release-index.html">JBrowse 1.9.7 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/06/18/jbrowse-1-9-6-maintenance-release-index.html">JBrowse 1.9.6 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/06/12/jbrowse-1-9-5-index.html">JBrowse 1.9.5 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/05/22/jbrowse-1-9-4-index.html">JBrowse 1.9.4 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/05/09/jbrowse-1-9-3-index.html">JBrowse 1.9.3 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/05/02/jbrowse-1-9-2-index.html">JBrowse 1.9.2 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/04/25/jbrowse-1-9-1-index.html">JBrowse 1.9.1 maintenance release</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/04/16/jbrowse-1-9-0-index.html">JBrowse 1.9.0: VCF support, dataset switching, wiggle track dynamic scaling, REST backend</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/02/12/jbrowse-1-8-1-bugfix-release-index.html">JBrowse 1.8.1 bugfix release</a></li><li class="navListItem navListItemActive"><a class="navItem" href="/blog/2013/01/31/jbrowse-1-8-0-index.html">JBrowse 1.8.0: opens local files, new BAM track types, new plugin system</a></li><li class="navListItem"><a class="navItem" href="/blog/2013/01/10/jbrowse-1-7-6-bugfix-release-index.html">JBrowse 1.7.6 bugfix release</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/12/12/jbrowse-1-7-5-bugfix-release-index.html">JBrowse 1.7.5 bugfix release</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/12/06/jbrowse-1-7-4-bugfix-release-index.html">JBrowse 1.7.4 bugfix release</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/11/28/jbrowse-1-7-3-bugfix-release-index.html">JBrowse 1.7.3 bugfix release</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/11/09/jbrowse-1-7-2-bugfix-release-index.html">JBrowse 1.7.2 bugfix release</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/11/07/jbrowse-1-7-1-bugfix-release-index.html">JBrowse 1.7.1 bugfix release</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/11/05/jbrowse-1-7-0-index.html">JBrowse 1.7.0, now with data export, direct BAM display, and much more</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/10/26/jbrowse-1-6-5-bugfix-release-index.html">JBrowse 1.6.5 bugfix release</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/10/16/jbrowse-1-6-4-bugfix-release-index.html">JBrowse 1.6.4 bugfix release</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/09/28/jbrowse-1-6-3-bugfix-release-index.html">JBrowse 1.6.3 bugfix release</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/09/10/jbrowse-1-6-2-bugfix-release-index.html">JBrowse 1.6.2 bugfix release</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/09/07/rbuels-and-jbrowse-at-the-semantic-web-biohackathon-2012-index.html">@rbuels and JBrowse at the Semantic Web BioHackathon 2012</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/08/28/jbrowse-1-6-1-bugfix-release-index.html">JBrowse 1.6.1 bugfix release</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/08/25/jbrowse-1-6-0-released-includes-feature-descriptions-and-more-index.html">JBrowse 1.6.0 released, includes feature descriptions and more!</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/08/13/jbrowse-1-5-0-released-includes-direct-bigwig-access-index.html">JBrowse 1.5.0 released, includes direct BigWig access!</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/07/12/jbrowse-1-4-2-released-index.html">JBrowse 1.4.2 released</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/07/10/jbrowse-1-4-1-released-index.html">JBrowse 1.4.1 released</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/06/14/jbrowse-1-4-0-released-includes-faceted-track-selection-index.html">JBrowse 1.4.0 released, includes faceted track selection!</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/05/07/poliovirus-xrate-demo-by-oscar-westesson-index.html">Poliovirus / XRate demo by Oscar Westesson</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/04/19/jbrowse-1-3-1-released-index.html">JBrowse 1.3.1 released</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/04/13/jbrowse-1-3-0-index.html">JBrowse 1.3.0, a major release!</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/03/25/jbrowse-1-2-2-released-index.html">JBrowse 1.2.2 released</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/03/22/hg19-tarball-updated-to-jbrowse-1-2-1-index.html">hg19 tarball updated to JBrowse 1.2.1</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/03/16/jbrowse-in-google-summer-of-code-2012-2-index.html">JBrowse in Google Summer of Code 2012</a></li><li class="navListItem"><a class="navItem" href="/blog/2012/01/13/new-jbrowse-lead-developer-index.html">New JBrowse Lead Developer</a></li><li class="navListItem"><a class="navItem" href="/blog/2011/09/16/dna-sequencing-on-your-iphone-theres-an-app-for-that-index.html">DNA sequencing on your iPhone? There's an app for that</a></li><li class="navListItem"><a class="navItem" href="/blog/2011/09/15/jbrowse-conference-call-index.html">JBrowse conference call</a></li><li class="navListItem"><a class="navItem" href="/blog/2011/08/03/summer-2011-update-index.html">Summer 2011 update</a></li><li class="navListItem"><a class="navItem" href="/blog/2011/04/06/jbrowse-is-hiring-index.html">JBrowse is hiring!</a></li><li class="navListItem"><a class="navItem" href="/blog/2011/03/17/jbrowse-1-2-1-released-index.html">JBrowse 1.2.1 released</a></li><li class="navListItem"><a class="navItem" href="/blog/2011/02/17/jbrowse-1-2-released-index.html">JBrowse 1.2 released</a></li><li class="navListItem"><a class="navItem" href="/blog/2010/12/18/touch-the-genome-index.html">Touch the genome</a></li><li class="navListItem"><a class="navItem" href="/blog/2010/11/24/hg19-tarball-updated-index.html">hg19 tarball updated</a></li><li class="navListItem"><a class="navItem" href="/blog/2010/11/11/data-mini-release-hg19-annotation-tarball-index.html">JBrowse tarball for hg19 human genome data</a></li><li class="navListItem"><a class="navItem" href="/blog/2010/10/11/personal-genomics-website-using-jbrowse-index.html">Personal genomics website using JBrowse</a></li><li class="navListItem"><a class="navItem" href="/blog/2010/10/11/jbrowse-website-moved-to-amazon-cloud-index.html">JBrowse website moved to Amazon cloud</a></li><li class="navListItem"><a class="navItem" href="/blog/2010/09/09/jbrowse-1-1-release-index.html">JBrowse 1.1 release</a></li></ul></div></div></section></div><script>
document.addEventListener('DOMContentLoaded', function() {
createToggler('#navToggler', '#docsNav', 'docsSliderActive');
createToggler('#tocToggler', 'body', 'tocActive');
const headings = document.querySelector('.toc-headings');
headings && headings.addEventListener('click', function(event) {
if (event.target.tagName === 'A') {
document.body.classList.remove('tocActive');
}
}, false);
function createToggler(togglerSelector, targetSelector, className) {
var toggler = document.querySelector(togglerSelector);
var target = document.querySelector(targetSelector);
toggler.onclick = function(event) {
event.preventDefault();
target.classList.toggle(className);
};
}
});
</script></nav></div><div class="container mainContainer postContainer blogContainer"><div class="wrapper"><div class="lonePost"><div class="post"><header class="postHeader"><h1 class="postHeaderTitle"><a href="/blog/2013/01/31/jbrowse-1-8-0-index.html">JBrowse 1.8.0: opens local files, new BAM track types, new plugin system</a></h1><p class="post-meta">January 31, 2013</p><div class="authorBlock"></div></header><div><span><p>JBrowse 1.8.0 is finally here, with some great new features, and lots of smaller improvements.</p>
<p>Download links:</p>
<ul>
<li><a href="/wordpress/wp-content/plugins/download-monitor/download.php?id=39" title="download JBrowse-1.8.0.zip">JBrowse-1.8.0.zip</a> - 3.3M - Includes everything you need to display your data on the web with JBrowse, optimized for fast loading speed.</li>
<li><a href="http://jbrowse.org/wordpress/wp-content/plugins/download-monitor/download.php?id=40" title="download JBrowse-1.8.0-dev.zip">JBrowse-1.8.0-dev.zip</a> - 28M - Primarily for developers. Includes additional developer documentation, developer test suites, and full copies of Dojo and Dijit.
The number 1 new feature is: JBrowse can now <strong>open local BAM, BigWig, and GFF3 files</strong> that reside on the user's computer, without the need to transfer any data over the network. For example, if a user is viewing a genome in JBrowse 1.8 at her favorite database website, and she has a 20GB BAM file on her computer for that same genome, she can just open her local BAM file and view it alongside the data from the website, without needing to upload the BAM file anywhere. Give this new feature a try, and let us know how it goes! The File->Open dialog works for remote URLs too, or even mixtures of local files and URLs.</li>
</ul>
<p>[caption id="attachment_513" align="alignnone" width="594"]<a href="filedialog.png"><img src="http://jbrowse.org/wordpress/wp-content/uploads/2013/01/filedialog.png" alt="The new file -> open dialog"></a> The new file -> open dialog[/caption]</p>
<p>There are also two new track types designed for even better display of BAM data:</p>
<p>First, there is the <strong>new <code>Alignments2</code> track type, which is a faster, <code><canvas></code>-based track for viewing alignments</strong>, including base-level indels and mismatches. It is much more performant when viewing very dense or deep sets of alignments, and is meant to largely replace the HTML-based <code>Alignments</code> track type that was introduced in JBrowse 1.7.0.</p>
<p>Second, there is a <strong>new <code>SNPCoverage</code> track</strong>, that draws the coverage of alignment features along the genome, along with a graphical representation of SNP distribution, and tables showing frequencies for each SNP. Thanks and great job to Julien Smith-Roberge, a co-op student at the Ontario Institute for Cancer Research for the initial implementation of this!</p>
<p>[caption id="attachment_515" align="alignnone" width="790"]<a href="snpcoverage.png"><img src="http://jbrowse.org/wordpress/wp-content/uploads/2013/01/snpcoverage.png" alt="SNPCoverage track"></a> SNPCoverage track[/caption]</p>
<p>The last headline feature, which will be of interest primarily for developers, is the introduction of a <strong>new plugin system for JBrowse</strong>. It's still a work in progress, the details of the plugin API will probably not be finalized for a while, but the broad strokes of it are set out on the <a href="http://gmod.org/wiki/JBrowse_Plugin_API" title="JBrowse Plugin API">JBrowse Plugin API page on the GMOD wiki</a>. If you are interested in living on the bleeding edge and developing a JBrowse plugin, contact the gmod-ajax mailing list, or contact me directly.</p>
<p>And now for the full release notes:</p>
<ul>
<li>Added new "File -> Open" function that can display BAM, BigWig, and
GFF3 files located on the user's machine, at remote URLs, or a
mixture of both. When opening local files, everything is done
locally, no data is transferred to the server.</li>
<li>Added a new "SNPCoverage" track type, designed for use with BAM
files (but which works with any features that have MD fields), that
shows a coverage plot with a graphical representation of SNP
distribution, and tables showing frequencies for each SNP.</li>
<li>Added a new "Alignments2" track type, which is a much faster
implementation of the "Alignments" track type. It is more suitable
for very deep BAM alignments, but has a slightly different
configuration scheme.</li>
<li>Added a flexible plugin system whereby external code can be loaded
as part of JBrowse. Plugin JavaScript has full access to customize
nearly everything in JBrowse. The plugin system is quite new, but
many hooks are available that plugins can use to safely modify
JBrowse's behavior, and more are on the way. See the JBrowse wiki
for details on how to write your own plugins. Thanks to Gregg Helt
and the other members of the WebApollo project for helping to drive
development of the new plugin system.</li>
<li>JBrowse feature name indexing (<code>generate-names.pl</code>) now uses an
all-new hash-based filesystem backend. Although
<code>generate-names.pl</code> now takes longer to run, it can handle much
larger numbers of names to index, and uses much less RAM to do it.
As a side benefit, the JBrowse location box's autocompletion
feature is now faster and more reliable. Thanks to Steffi Geisen
and Volodymyr Zavidovych for pointing out the issues with name
indexing scalability and reliability.</li>
<li>Added support in "HTMLFeatures", "Alignments", and "Alignments2"
tracks for a <code>style.featureScale</code> configuration variable, which, if
set, specifies a minimum zoom scale (pixels per basepair) for
displaying features. If zoomed out more than this (i.e. fewer
pixels per bp), either histograms or a "too many features" message
will be displayed.</li>
<li>Changed binning algorithm of "FeatureCoverage" tracks when zoomed
out. Now calculates the average base coverage in each bin, rather
than the absolute number of features that overlap each bin.</li>
<li>"HTMLFeatures" tracks now accept a comma-separated list of field
names in their <code>description</code> configuration variable, allowing users
to customize which attribute(s) of a feature hold the description.</li>
<li>Added a timeout to HTMLFeatures and Alignments tracks to prevent
data-heavy tracks (like BAM tracks with very deep coverage) from
freezing or crashing a user's browser.</li>
<li>Improved graphical look of canvas-based tracks during zoom
operations. Thanks to Mitch Skinner for implementing this!</li>
<li>Fixed a bug in which the Y-axis scale for feature density
histograms in HTMLFeatures tracks was sometimes drawn incorrectly.</li>
<li>Greatly improved speed and responsiveness of BAM data backend.</li>
<li>Fixed yet another bug that prevented display of some types of BAM files.</li>
</ul>
</span></div></div><div class="blogSocialSection"></div></div><div class="blog-recent"><a class="button" href="/blog">Recent Posts</a></div></div></div><nav class="onPageNav"></nav></div><footer class="nav-footer" id="footer"><section class="sitemap"><div><h5>Docs</h5><a href="/blog">Blog</a><a href="/docs/tutorial.html">Getting Started</a></div><div><h5>Community</h5><a href="https://gitter.im/GMOD/jbrowse">Project Chat</a><a href="https://twitter.com/JBrowseGossip" target="_blank" rel="noreferrer noopener">Twitter</a></div><div><h5>More</h5><a href="https://github.com/GMOD/jbrowse">GitHub</a><a class="github-button" href="https://github.com/GMOD/jbrowse" data-icon="octicon-star" data-count-href="/GMOD/jbrowse/stargazers" data-show-count="true" data-count-aria-label="# stargazers on GitHub" aria-label="Star this project on GitHub">Star</a></div></section><section class="copyright">Copyright © 2019 Evolutionary Software Foundation</section></footer></div></body></html>