hello Fabrizio, yes it is possible in the ROOT framework : http://root.cern.ch/root/Version40008.news.html since version 4.00.08. but my questions were more related about a potential usage outside the ROOT framework. cheers, JY Fabrizio Furano wrote: > Hi JY, > > I don't want to be sure, but i believe that ROOT allows you to read > from archives (zip?) specifying the archive name in the url. I want to > check. > > Fabrizio > > > > > > Jean-Yves Nief wrote: > >> hello, >> >> ROOT is giving the possibility of reading zip archive, which >> is a nice feature, though I did not test it yet >> I think I found a potential interest for it outside the ROOT >> framework in astrophysics: some experiments are reading FITS files >> which are not rather small (10's of MB) and they usually organize >> them in zip archive that can be easily stored into HPSS (less files, >> less bookkeping, users happier, HPSS admins happier too :-) ). >> I was wondering if the same ROOT feature would be difficult to >> implement on the TXNetFile side if it is not implemented there. >> one other thing: based on the current documentation, client side >> decompression is not supported yet, right ? >> thanks in advance, >> JY >