Hi all, I have one problem, that I cannot solve. It regards writing an object with and array of integers to the root tree. Let's say one has nclusters in event and wants to save a variable cluster_size for each cluster. This may vary from event to event. It is a very useful feature and definitely doable since h2root converts hbook indexed blocks in desired way. I tried to follow ROOT user's guide and failed. If I display values stored in int* arr it gives me plot with all values being 1. Why? Also Data members have names fX,fY on the tree; how can I change these names? I couldn't get a support in our Collaborations since after experiencing problems, people just quit using I/O. Maybe it is a problem of poor documentation on the web. The files are attached. I compile it this way rootcint TestClassDict.cxx -c TestClass.h g++ -O -Wall -fPIC -I$ROOTSYS/include -c TestClass.cxx g++ -O -Wall -fPIC -I$ROOTSYS/include -c TestClassDict.cxx g++ -shared -O TestClass.o TestClassDict.o -o libTestClass.so I'm using root Version 3.00/06 on Suse Linux Miro
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