In-place search in TFile-s?

ROOT
1

Hello All,

Let’s suppose there’s a ROOT file with several large objects, and you need to perform search using some key value (double in my case). Is there a ‘right’ way to read just the key, omitting the rest ? (Objects in file are quite simple, containing only doubles and double arrays of predefined size. The offset of the key in the object is also known)

Thanks

2

Hi,

If your objects are not in a TTree, tehre is no simple way to do what you request. (In a TTree, you would still need to have slipt your objects).

Cheers,
Philippe.