<div dir="ltr">Hi all,<div><br></div><div>If any of you happen to be using a data_collection object [1] for any purposes, please note that API has changed on the yt branch, according this this issue [2].  In particular, the 'center' argument is no longer required, but can still be passed as a keyword argument.</div><div><br></div><div>Chris</div><div><br></div><div>[1] <a href="http://yt-project.org/docs/3.0/analyzing/objects.html?highlight=data_collection#filtering-and-collection-objects">http://yt-project.org/docs/3.0/analyzing/objects.html?highlight=data_collection#filtering-and-collection-objects</a></div><div>[2] <a href="https://bitbucket.org/yt_analysis/yt/issue/872/data-collection-object-requires-a-center">https://bitbucket.org/yt_analysis/yt/issue/872/data-collection-object-requires-a-center</a></div></div>