xps (version 1.32.0)

root.data: Create class DataTreeSet accessing ROOT data file

Description

Create class DataTreeSet accessing ROOT data file.

Usage

root.data(xps.scheme, rootfile = character(0), celnames = "*")

Arguments

xps.scheme

A SchemeTreeSet containing the correct scheme for the ROOT data file.

rootfile

name of ROOT data file, including full path.

celnames

optional character vector of tree names to get only subset of trees.

Value

A DataTreeSet object.

Details

An S4 class DataTreeSet will be created, serving as R wrapper to the existing ROOT data file rootfile.

If the DataTreeSet should only handle a subset of the trees stored in rootfile, the tree names must be supplied as vector celnames.

To get the names of all trees stored in rootfile you can call function getTreeNames first.

See Also

import.data, DataTreeSet

Examples

## get scheme and import CEL-files from package
scheme.test3 <- root.scheme(paste(path.package("xps"),"schemes/SchemeTest3.root",sep="/"))
data.test3 <- import.data(scheme.test3,"tmp_datatest3",celdir=paste(path.package("xps"),"raw",sep="/"),verbose=FALSE)

## use subset of CEL-files
subdata.test3 <- root.data(scheme.test3,"tmp_datatest3_cel.root", celnames=c("TestA1.cel","TestB2.cel"))