ROOT file -> txt format

[Spring_127]

Thank you for your guidance,
The root files that are generated at the end of the execution are 3 files:

output.root
output_t0.root
output_t1.root

The following command for the output.root file
Runs properly:

root -b -l -q ‘dump.cxx (“dump.txt”, “output.root”, “ntuple / ntuple_1”)’

The dump.txt and dump.xml files are created and display the following message in the terminal:

+++++++++++++++++++++++++
Processing dump.cxx (“dump.txt”, “output.root”, “ntuple / ntuple_1”) …
File <dump.txt> created
Info in : ROOT file dump.xml has been created

+++++++++++++++++++++++++

But for files:

output_t0.root
output_t1.root

Displays the following error:

++++++++++++++++++++++++++++

Processing dump.cxx(“dump.txt”, “output_t1.root”, “ntuple/ntuple_1”)…
File <dump.txt> created
Error in TBranch::TBranch::WriteBasketImpl: basket’s WriteBuffer failed.

Error in TBranch::TBranch::WriteBasketImpl: basket’s WriteBuffer failed.

Error in TBranch::TBranch::WriteBasketImpl: basket’s WriteBuffer failed.

Error in TBranch::TBranch::WriteBasketImpl: basket’s WriteBuffer failed.

Error in TBranch::TBranch::WriteBasketImpl: basket’s WriteBuffer failed.

Error in TBranch::TBranch::WriteBasketImpl: basket’s WriteBuffer failed.

Error in TBranch::TBranch::WriteBasketImpl: basket’s WriteBuffer failed.

Error in TBranch::TBranch::WriteBasketImpl: basket’s WriteBuffer failed.

Info in TTree::SaveAs: ROOT file dump.xml has been created

++++++++++++++++++++++++++++++

[pcanal]

See https://github.com/root-project/root/issues/10024 for TTree::SaveAs explicit disabling request.

[Wile_E_Coyote]

@pcanal Note that, at least in some cases, it can work without reporting any errors, e.g., try ntuple->SaveAs("dump.xml") for the “hsimple.root” (from the “tutorials”).

[pcanal]

Note that, at least in some cases, it can work without reporting any errors,

I see that too … However the xml file only contains the TTree object (meta-data) and none of the data. (i.e. unlikely to be the intended content)

[Spring_127]

Thank you for your valuable help, please help with the root file in the following format:

ttaching file output.root as _file0 …
(TFile *) 0x5556a033ddc0
TFile ** output.root
TFile * output.root
KEY: TH1D 1; 1 edep
KEY: TH1D 2; 1 cl size
KEY: TH1D 3; 1 Nsb
KEY: TH1D 4; 1 Ndb
KEY: TH1D 5; 1 Cdb

The .txt file will not be generated when I run the following command in the terminal:

root -b -l -q ‘dump.cxx (“dump.txt”, “output.root”, “1/ 1”)’

With respect ,
Spring_127

[Wile_E_Coyote]

root -b -l -q output.root -e 'TH1 *h; gFile->GetObject("1", h); h->Print("all");' > h.out.txt

[sbinet]

you could definitely use root2yoda for that:

• https://go-hep.org/x/hep/cmd/root2yoda

which can be downloaded from:

• https://go-hep.org/dist/latest
  (then, choose the one for your operating system.)

[Spring_127]

Dear Wile_E_Coyote,

Thank you very much for your help.

[Spring_127]

dear sbinet,
Thank you for your help.

$ ./root2yoda-linux_amd64.exe output.root out.yoda

---

root2yoda: processing output.root
BEGIN YODA_HISTO1D_V2 /2
Path: /2
.
.
.
.
.
root2yoda: processing out.yoda
root2yoda: failed to open [out.yoda]: riofs: unable to open “out.yoda”: riofs: no ROOT plugin to open [out.yoda] (scheme=)

---

The output file was not created, only displayed on the terminal.

With respect,
zj

[Wile_E_Coyote]

./root2yoda-linux_amd64.exe output.root > out.yoda
./root2yoda-linux_amd64.exe -o out.yoda output.root

[Spring_127]

Dear Wile_E_Coyote,

Thank you very much for your help.

With respect,
zj

[sbinet]

did it work for what you wanted to achieve (at least for the histograms part)?

for the TTree part, root2csv could be an option (if the TTree is simple enough: just scalars, not std::vector<T> nor arrays or structs.)

(root2npy could be an option as well, but…)
it all depends on what you want to do with those ASCII files.