hi, My ROOT version infor is------> QAInfo:You are using STAR_LEVEL : new, ROOT_LEVEL : 3.02.07 now,I am confronted with a strange problem as blow, I drew some TProfiles and saved them in a root file.But every time I open it using TFile,there would be a warning like this-----> WARNING, the StreamerInfo of class TProfile read from file /direct/star+u/chengyh/centrality/analysis/result/MC_Tree/5/ptmean.root has the same version (=3) as the active class but a different checksum. You should update the version to ClassDef(TProfile,4). Do not try to write objects with the current class definition, the files will not be readable. When I list them and draw one TProfile,it works,but when I draw one more TProfile under the same ROOT session,it fails and gives infor as below---> *** Break *** segmentation violation Root > Function meanptvscent() busy flag cleared and then stops. I don't know why,but I guess it is because that the Nents of those TProfile are very huge.Because I must draw these TProfiles one time, but it always fails,how can I do then? You can have a look my macro for drawing,I have inclosed it to you. -- Best regards! Cheng Yunhua ************************************************************************** * Name: Cheng Yunhua Major: high energe experiment physics *** *--------------------------------------------------------------------** * Department:Institute of particle physics,Huazhong Normal University*** *--------------------------------------------------------------------**** * Adress: Institute of particle physics,CCNU,Wuhan,Hubei,PRC. ***** *--------------------------------------------------------------------****** * ZIP code: 430079 Tel: 027-87673314(O) 027-87340256(D) ***** *--------------------------------------------------------------------**** * E-mail: chengyh@iopp.ccnu.edu.cn chengyunhua11@263.net *** **************************************************************************
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