TSelector

TSelector

new TSelector()

Class to read data from TTree

Description:

  • Instance of TSelector can be used to access TTree data

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Methods

Abort()

call this function to abort processing

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(abstract) Begin(tree)

function called before start processing

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Parameters:
Name Type Description
tree object

tree object

(abstract) Process(entry)

function called when next entry extracted from the tree

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Parameters:
Name Type Description
entry number

read entry number

(abstract) ShowProgress(progress)

function called during TTree processing

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Parameters:
Name Type Description
progress number

current value between 0 and 1

(abstract) Terminate(res)

function called at the very end of processing

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Parameters:
Name Type Description
res boolean

true if all data were correctly processed

addBranch(branch, nameopt, directopt)

Add branch to the selector

Description:

  • Either branch name or branch itself should be specified Second parameter defines member name in the tgtobj If selector.addBranch('px', 'read_px') is called, branch will be read into selector.tgtobj.read_px member If second parameter not specified, branch name (here 'px') will be used If branch object specified as first parameter and second parameter missing, then member like 'br0', 'br1' and so on will be assigned

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Parameters:
Name Type Attributes Description
branch string | Object

name of branch (or branch object itself}
name string <optional>

member name in tgtobj where data will be read
direct boolean <optional>

if only branch without any children should be read

getBranch()

returns branch by index used in selector

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numBranches()

returns number of branches used in selector

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