Dear ROOTer, I want to change some codes based on AIDA to root as the following ---- ... // Creating the analysis factory AIDA::IAnalysisFactory* af = AIDA_createAnalysisFactory(); // Creating the tree factory AIDA::ITreeFactory* tf = af->createTreeFactory(); ... AIDA::ITree* tree = tf->create("testaa.paw", "hbook", readOnly=false, createNew = true); // Creating a historam factory AIDA::IHistogramFactory* hf = af->createHistogramFactory(*tree); ... ----- What are the corresponding classes in ROOT to AIDA::IAnalysisFactory, AIDA::ITreeFactory and AIDA::IHistogramFactory? The second question, how to convert an <xxxx.aida> file into a <xxxx.root> file? Regards. Exaos
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