Hi all, I've issued a PR for YTEP-0027 about non-spatial data: https://bitbucket.org/yt_analysis/ytep/pull-requests/57/adding-ytep-0027-for-non-spatial-data This is related to https://bitbucket.org/yt_analysis/yt/pull-requests/1891/wip-supporting-non-spatial-coordinate/diff -Matt