Hi, ( In our usual pre-planning :) ), this has been fixed 5 days ago and the fix is available in the head of the CVS repository. The problem was that MakeClass was not creating the correct code in the case of a TClonesArray containing object of a class that has variable size array. As you pointed out it should have had a '*' in the date member definition. However this is not sufficient since the reading part also needed to be fixed. Cheers, Philippe. -----Original Message----- From: owner-roottalk@pcroot.cern.ch [mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of Elena Vataga Sent: Wednesday, April 17, 2002 7:23 AM To: Rene Brun Cc: roottalk@pcroot.cern.ch Subject: [ROOT] aceess to array elements from TObject Hello rooters! I used the following arrays in my TObject: class TCMXmuon: public TObject { protected: //--------------------------------------------------------------- // data members //--------------------------------------------------------------- TLorentzVector lvec; Int_t DetCode; // (1)CMU (2)CMP (3)CMU+CMP (4)CMX (5)BMU .... Int_t nt0; // number of inner times Int_t* mT0; //[nt0] Mean Time in inner layer Int_t* C0; //[nt0] Counter in inner layer Float_t* T0; //[nt0] Time in inner layer ... Int_t nt1; // number of outer times Float_t* T1; //[nt1] Time in outer layer My question is: how can I access first, second etc member of my array variables (T0[0], T0[1] etc) inside root - they look like flat numbers and not array? *............................................................................* *Br 70 :MUO.nt0 : nt0[MUO_] * *Entries : 4971 : Total Size= 47305 bytes File Size = 12009 * *Baskets : 1 : Basket Size= 64000 bytes Compression= 3.94 * *............................................................................* *Br 71 :MUO.nt1 : nt1[MUO_] * *Entries : 4971 : Total Size= 47305 bytes File Size = 11753 * *Baskets : 1 : Basket Size= 64000 bytes Compression= 4.02 * *............................................................................* *Br 72 :MUO.mT0 : mT0[MUO_] * *Entries : 4971 : Total Size= 49127 bytes File Size = 13721 * *Baskets : 1 : Basket Size= 64000 bytes Compression= 3.58 * *............................................................................* *Br 73 :MUO.mT1 : mT1[MUO_] * *Entries : 4971 : Total Size= 48567 bytes File Size = 13918 * *Baskets : 1 : Basket Size= 64000 bytes Compression= 3.49 * *............................................................................* *Br 74 :MUO.C0 : C0[MUO_] * *Entries : 4971 : Total Size= 49126 bytes File Size = 18567 * *Baskets : 1 : Basket Size= 64000 bytes Compression= 2.65 * *............................................................................* I tried to MakeClass from my tree and I am getting in the header: Int_t MUO_nt0[kMaxMUO]; //[MUO_] Int_t MUO_nt1[kMaxMUO]; //[MUO_] Int_t MUO_mT0[kMaxMUO]; //[MUO_] Int_t MUO_mT1[kMaxMUO]; //[MUO_] Int_t MUO_C0[kMaxMUO]; //[MUO_] Int_t MUO_C1[kMaxMUO]; //[MUO_] Float_t MUO_T0[kMaxMUO]; //[MUO_] Float_t MUO_T1[kMaxMUO]; //[MUO_] so it is not an array? Will be most grateful for any advice, regards, Elena
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