Is there a way to delete objects from a TFile and free up the disk memory? The example given below illustrates the problem - even though I delete the TVector object, the size of the file does not decrease, and if I write the TVector to the file again, the file grows in size. Thanks for your help, Glen root [0] TFile f("test.root","RECREATE"); root [1] f.ls(); TFile** test.root TFile* test.root root [2] .!ls -l test.root -rw-r--r-- 1 gsalo gsalo 148 Feb 2 12:30 test.root root [3] TVector v(1000); root [4] v.Write("vector"); root [5] f.ls(); TFile** test.root TFile* test.root KEY: TVector vector;1 Vector class root [6] .!ls -l test.root -rw-r--r-- 1 gsalo gsalo 250 Feb 2 12:30 test.root root [7] f.Delete("*;*"); root [8] f.ls(); TFile** test.root TFile* test.root root [9] .!ls -l test.root -rw-r--r-- 1 gsalo gsalo 252 Feb 2 12:30 test.root root [10] v.Write("vector"); root [11] f.ls(); TFile** test.root TFile* test.root KEY: TVector vector;1 Vector class root [12] .!ls -l test.root -rw-r--r-- 1 gsalo gsalo 350 Feb 2 12:31 test.root
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