Hello I finally managed to import the whole detector in ROOT and draw it properly (thanks! :o) ). I'm trying to do the same with tracks and hits, but it doesn't work: I save the JXYZ structure in the same zebra file as MATE, VOLU, etc. Then I g2root it, which seems to work ok - here is the output: ************** Directory ===> //LUN1 <=== Created 030811/1848 Modified 030811/1849 ===> List of objects OBJECT VERSION CYCLE DATE/TIME NDATA MATE 1 1 030811/1848 109567 PART 1 1 030811/1848 1745 ROTM 1 1 030811/1848 365 RUNG 1 1 030811/1848 47 SETS 1 1 030811/1848 3403 TMED 1 1 030811/1848 8542 VOLU 1 1 030811/1848 130410 JXYZ 1 1 030811/1849 172486 JXYZ 2 1 030811/1849 41854 JXYZ 3 1 030811/1849 436224 JXYZ 5 1 030811/1849 19991 JXYZ 9 1 030811/1849 94382 Number of records = 997 Number of megawords = 1 + 20040 words Per cent of directory quota used = 99.700 Per cent of file used = 99.700 Blocking factor = 99.813 In g2rin, iquest(13)= 75 after rzink, ikey= 1iquest(1)= 0 trying to read:MATE after rzink, ikey= 2iquest(1)= 0 trying to read:PART after rzink, ikey= 3iquest(1)= 0 trying to read:ROTM after rzink, ikey= 4iquest(1)= 0 trying to read:RUNG after rzink, ikey= 5iquest(1)= 0 trying to read:SETS after rzink, ikey= 6iquest(1)= 0 trying to read:TMED after rzink, ikey= 7iquest(1)= 0 trying to read:VOLU after rzink, ikey= 8iquest(1)= 0 trying to read:JXYZ after rzink, ikey= 9iquest(1)= 0 trying to read:JXYZ after rzink, ikey= 10iquest(1)= 0 trying to read:JXYZ after rzink, ikey= 11iquest(1)= 0 trying to read:JXYZ after rzink, ikey= 12iquest(1)= 0 trying to read:JXYZ after rzink, ikey= 13iquest(1)= 1 nkeys= 12 nwkey= 2 nvolum= 185 jvolum= 3872631 Division volumePRM1 Division volumeSCY5 Division volumeSCX1 Division volumeSCU1 Division volumeSCY1 Division volumeSCX3 Division volumeSCU3 Division volumeSCY3 Division volumePRM2 Division volumeSCY6 Division volumeSCX2 Division volumeSCU2 Division volumeSCY2 Division volumeSCX4 Division volumeSCU4 Division volumeSCY4 GEANT file: kopio_mc_19.rz converted to ROOT macro: kopio_mc_19.C but when I display my geometry in the TBrowser, the tracks folder is empty and when I try to draw them there is no response. What am I doing wrong? I saved the hits separatelly in another zebra file, but this one core dumped when I tried to g2root it. Is there any tool in ROOT to handle GEANT3 HITS strucures (without the intermediate step of filling an ntuple, converting it into a TTree... etc), or not yet? Thank you Ilektra Christidi
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