Hi ROOT - team
I have problems to find my object in a ROOT file that I have written into a
subdirectory. It disappears after I close and reopen the ROOT file:
Warning in <TGClient::GetColorByName>: couldn't retrieve color LightYellow
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* W E L C O M E to R O O T *
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* Version 2.23/12 21 February 2000 *
* *
* You are welcome to visit our Web site *
* http://root.cern.ch *
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FreeType Engine v1.1 used to render TrueType fonts.
CINT/ROOT C/C++ Interpreter version 5.14.25, Nov 25 1999
Type ? for help. Commands must be C++ statements.
Enclose multiple statements between { }.
root [0] TFile * file = new TFile("subdir.root", "NEW")
root [1] file->IsOpen()
(Bool_t)1
root [2] TNamed *name = new TNamed("my Name", "my title")
root [3] TDirectory * dir = file->mkdir("sub")
root [4] dir->cd()
(Bool_t)1
root [5] name->Write("my Name")
root [6] file->ls()
TFile** subdir.root
TFile* subdir.root
TDirectory* sub sub
KEY: TNamed my Name;1 my title
KEY: TDirectory sub;1 sub
// up to here everything looks
// OK for me
root [7] delete file
root [8] TFile * file = new TFile("subdir.root", "READ")
root [9] file->IsOpen()
(Bool_t)1
root [10] file->ls()
TFile** subdir.root
TFile* subdir.root
KEY: TDirectory sub;1 sub
// here "TNamed my Name" is
// missing ??
root [11] gDirectory->cd("sub")
(Bool_t)1
root [12] gDirectory->ls()
TDirectory* sub sub
root [13] gDirectory->pwd()
subdir.root:/sub
root [14] name->Read("my Name")
Error in <TNamed::Read>: Key not found
// I cannot read the object
root [15] file->Map()
20000305/103617 At:64 N=88 TFile
20000305/103650 At:152 N=75 TDirectory
20000305/103725 At:227 N=79 TNamed
20000305/103738 At:306 N=94 TFile
20000305/103738 At:400 N=55 TFile
// But somehow TNamed is
// available in the file
What is wrong with these statements?
I run these on a SUN SPARC station.
Thanks Reiner.
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