Hi Luiz, It looks like you do not delete your histograms between the two passes. I suggest you read our standard example $ROOTSYS/tutorials/h1analysis.C, see function Begin). The message "Streamer not declared" is just an informative message in case the ClassDef macro is not found when processing a class. You can ignore this message. We will print this message in a future version only when the errorlevel will be greater than 0. Rene Brun On Sat, 27 Oct 2001, Luiz Martins Mundim Filho wrote: > Hello > > I'm using the file generated by MakeSelector to process an ntuple e get > number of expected events, cross sections, etc... I was using the > interpreted mode, but since my ntuple is very big, is got too slow and > I decided to invest some effort to compile it, but now I realized that > when executing it for the second time, it didn't initialized the > variables I use to count selected events in several channel. In summary, > I gave the commands (after reading the ntuple, compiling some auxiliary > routines and all that): > > root> h1->Process("Wpolarization.C++") > Creating shared library /home/delphi/data/ww/dat/./Wpolarization_C.so > Class Wpolarization: Streamer() not declared > Class Wpolarization: ShowMembers() not declared > Starting Wpolarization with process option: > > The number I got are correct. Then I did it again: > > root>h1->Process("Wpolarization.C+") > > The numbers are twice the correct ones. I used only one "+" because I > didn't modified the Wpolarization.C. Should I always use the double "+" > even if the analisys program has not changed? > > Another question: How can I solve the problem about the message about > Streamer() not declared. I have looked for an include file when it is > declared but I did not succeed. > > Thanks a lot. > > Luiz. >
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