[yt-users] combining read in files in yt

Hi All, (a second question, though in a different thread for cleanliness): Is it possible to combine multiple files that I load into yt? i.e. if I have particle lists that are written into multiple files and do:

pf1 = load("snap1a.hdf5") pf2 = load("snap1b.hdf5")

Is it possible to combine the two into a single pf that contains the information for all of the particles? thanks, desika