> Hi, > > i would use *perl* to do the selection ... then use popen, > TSystem::OpenPipe that is, to get the names in. > eg.: > #!/usr/bin/perl <<END_PERL > @files = sort @ARGV; > # some higher magick might be usefull ... > print join("\n", @files); > print "\n"; > END_PERL > > and then use > FILE* in = gSystem->OpenPipe("perlscript *.root", "r"); > while(!feof(in)) { > // read name ... open the file ... do magick > } > > or do the preselection in perl script itself ... which is even better. > Then you can also pass other stuff to analyzing routine (like labels > for Canvasen). > > Not sure how this works on windooze ... > Hello, I guess I missed the original message. To loop over files one can use TSystem class with no "perl involve" http://root.cern.ch/root/html/TSystem.html#TSystem:OpenDirectory http://root.cern.ch/root/html/TSystem.html#TSystem:GetDirEntry http://root.cern.ch/root/html/src/TSystem.cxx.html#TSystem:FreeDirectory This works for any platform ROOT support. To make a selection ROOT class TRegexp can be handy too. http://root.cern.ch/root/html/TRegexp.html One can see an example of how this can be employ: http://www.star.bnl.gov/STAR/html/comp_l/root/html/St_FileSet.html The class mentioned above is renamed into TFileSet and is included into ROOT.CMZ 2.23/12. ROOT team doesn't provide any pre-compiled share library yet. It is under development and it should be documented first. If people want it just now I can provide further explanation and instruction. Valery > ... there is more than one way to do it ... > > Cheers, > matevz > > --------------------------------------------------- > Matevz Tadel, E-mail: Matevz.Tadel@ijs.si > Department of Experimental High Energy Physics F9 > Jozef Stefan Institute, Jamova 39, P.o.Box 3000 > SI-1001 Ljubljana, Slovenia > Tel.: +386-61-177-3674 Fax: +386-61-125-7074 > --------------------------------------------------- > > >
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