ROOT Tutorials: Trees I/O, Queries, Graphics

From $ROOTSYS/tutorials/tree

1. basic.C Read data from an ascii file and create a root file with an histogram and an ntuple.
2. basic2.C example of macro to create can ntuple reading data from an ascii file.
3. bill.C benchmark comparing write/read to/from keys or trees
4. cernbuild.C Read data (CERN staff) from an ascii file and create a root file with a Tree.
5. cernstaff.C Playing with a Tree containing variables of type character
6. circular.C Example of a circular Tree
7. clonesA_Event.C Example to write & read a Tree built with a complex class inheritance tree.
8. copytree.C Example of Root macro to copy a subset of a Tree to a new Tree
9. copytree2.C Example of Root macro to copy a subset of a Tree to a new Tree
10. copytree3.C Example of Root macro to copy a subset of a Tree to a new Tree
11. drawsparse.C Convert a THnSparse to a TTree using efficient iteration through the THnSparse
12. h1chain.C Creates a TChain to be used by the h1analysis.C class
13. hsimpleReader.C A simple TTreeReader use: read data from hsimple.root (written by hsimple.C)
14. htest.C Example illustrating how to save histograms in Tree branches.
15. hvector.C This tutorials demonstrate how to store and restore simple vectors
16. jets.C script illustrating the use of a Tree using the JetEvent class.
17. ntuple1.C Small tree analysis script
18. parallelcoord.C script illustrating the use of the TParalleCoord class
19. parallelcoordtrans.C Script illustrating the use of transparency (right now in PDF file only) with ||-Coord.
20. printSizes.C This macro can be used to get aggregate information on the size
21. spider.C script illustrating the use of the TSpider class
22. staff.C to create cernstaff.root, execute tutorial $ROOTSYS/tree/cernbuild.C
23. tcl.C Example of macro illustrating how to write a TClonesArray to a TTree
24. tree.C This macro displays the Tree data structures
25. tree0.C simple Event class example
26. tree1.C This example is a variant of hsimple.C but using a TTree instead
27. tree2.C This example illustrates how to make a Tree from variables or arrays
28. tree2a.C This example is the same as tree2.C, but uses a class instead of a C-struct.
29. tree3.C Example of a Tree where branches are variable length arrays
30. tree4.C This example writes a tree with objects of the class Event.
31. treefriend.C Illustrates how to use Tree friends: