ROOT  6.06/09
Reference Guide
Namespace List
Here is a list of all namespaces with brief descriptions:
[detail level 1234]
 N_pythonization
 NBidirMMapPipe_implNamespace for implementation details of BidirMMapPipe
 Nclang
 Ncling
 Nutils
 NCppyy
 Ncppyy
 NDavix
 NDetail
 Nfaddeeva_impl
 NFitterUtilUtility functions to be used in the fitter classes
 NFunction
 NHFit
 Nllvm
 NmakeTest
 NMathNamespace for new Math classes and functions
 NMemstat
 NMPCodeThis namespace prevents conflicts between MPCode::kError and ELogLevel::kError
 NPoolCode
 NPoolUtilsThis namespace contains pre-defined functions to be used in conjuction with TPool::Map and TPool::MapReduce
 NPyROOT
 NPyStrings
 NUtility
 NRcppThis is a class to support deprecated method to pass function to R's Environment, based in Rcpp::InternalFunction
 Ntraits
 NRgl
 NFgt
 NMc
 NPad
 NRooCintUtils
 NRooFit
 NRooFitShortHand
 NRooLinkedListImplDetails
 NRooSimultaneousAux
 NRooStatsNamespace for the RooStats classes
 NHistFactory
 NNumberCountingUtils
 NROOTNamespace for new ROOT classes and functions
 NDetail
 NFitNamespace for the fitting classes
 NHist
 NInternal
 NMacOSX
 NMath
 NMathMore
 NMeta
 NMinuit
 NMinuit2
 NQuartz
 NRNamespace associated R package for ROOT
 NTF1Helper
 NTMetaUtils
 NTreeUtils
 Nv5
 NVc
 NROOTaaS
 Nhtml
 NiPyROOT
 NRootCsgI've modified some very nice bounding box tree code from Gino van der Bergen's Free Solid Library below
 NROOTwriter
 Nsample_config
 NSelectionRulesUtils
 Nsqlio
 NstdSTL namespace
 N__ROOT
 Ndetail
 NTClassEdit
 NTCollectionProxyInfo
 Ntest
 NTMath
 NTMatrixTCramerInv
 NTMatrixTSymCramerInv
 NTMVAAbstract ClassifierFactory template that handles arbitrary types
 NkNN
 NTMVAGlob
 NTStreamerInfoActions
 Nvdt
 Ndetails
 Nwriter
 Nxmlio
 NXPD
 NXrdCl