New issue 1193: Add a default particle filter for Enzo https://bitbucket.org/yt_analysis/yt/issues/1193/add-a-default-particle-filt... Matthew Turk: Right now (as pointed out by @rthompson ) particle filters for Star particles from "old" Enzo aren't set up. We may want to do this, so that they show up in particle types. For reference: ```#define PARTICLE_TYPE_GAS 0 #define PARTICLE_TYPE_DARK_MATTER 1 #define PARTICLE_TYPE_STAR 2 #define PARTICLE_TYPE_TRACER 3 #define PARTICLE_TYPE_MUST_REFINE 4 #define PARTICLE_TYPE_SINGLE_STAR 5 #define PARTICLE_TYPE_BLACK_HOLE 6 #define PARTICLE_TYPE_CLUSTER 7 #define PARTICLE_TYPE_MBH 8 #define PARTICLE_TYPE_COLOR_STAR 9 #define PARTICLE_TYPE_SIMPLE_SOURCE 10 ``` This would likely come in around the time that default particle unions are set up.