How does one access leaves on branches through rootls/rootcp?

ROOT
,
1

rootls/rootcp unable to access leafs on branches of a tree. Here’s my log:

quant@15:47:16:RUN2$ rootls -t -l "Run030010/Run030010.000.root"
TTree  Apr 26 12:07  Board  "MonitoringBoard"
  pin1   "Vbias1/I:Vbias2/I:amplitude/I:baseline/I:ADCVal/I"  763658712
  pin2   "Vbias1/I:Vbias2/I:amplitude/I:baseline/I:ADCVal/I"  763658712
  laser  "Vbias1/I:Vbias2/I:amplitude/I:baseline/I:ADCVal/I"  763666647
  amer   "Vbias1/I:Vbias2/I:amplitude/I:baseline/I:ADCVal/I"  763658712
  pmt    "Vbias1/I:Vbias2/I:amplitude/I:baseline/I:ADCVal/I"  763650777
quant@15:47:19:RUN2$ rootls -t -l "Run030010/Run030010.000.root:Board"
TTree  Apr 26 12:07  Board  "MonitoringBoard"
  pin1   "Vbias1/I:Vbias2/I:amplitude/I:baseline/I:ADCVal/I"  763658712
  pin2   "Vbias1/I:Vbias2/I:amplitude/I:baseline/I:ADCVal/I"  763658712
  laser  "Vbias1/I:Vbias2/I:amplitude/I:baseline/I:ADCVal/I"  763666647
  amer   "Vbias1/I:Vbias2/I:amplitude/I:baseline/I:ADCVal/I"  763658712
  pmt    "Vbias1/I:Vbias2/I:amplitude/I:baseline/I:ADCVal/I"  763650777
quant@15:47:36:RUN2$ rootls -t -l "Run030010/Run030010.000.root:Board/pin1"
WARNING: can't find Board/pin1 in Run030010/Run030010.000.root
quant@15:47:42:RUN2$ rootls -t -l "Run030010/Run030010.000.root:Board.pin1"
WARNING: can't find Board.pin1 in Run030010/Run030010.000.root
quant@15:47:48:RUN2$ rootls "Run030010/Run030010.000.root:Board/pin1"
WARNING: can't find Board/pin1 in Run030010/Run030010.000.root
quant@15:48:24:RUN2$

It lists the branches though, but doesn’t list the leaves (leafs) inside them!
How does one access them then?

Thanks

_ROOT Version: ROOT 6.10/04
_Platform: Ubuntu 18.04.4 LTS
_Compiler: g++ (Ubuntu 7.5.0-3ubuntu1~18.04) 7.5.0

2

Hi @quantatanu,
sorry for the late reply. I am not quite sure what the desired output is, can you share the output of TTree::Print for this dataset?

Cheers,
Enrico

3

Hi, here’s the output:

root [1] Board->Print()
******************************************************************************
*Tree    :Board     : MonitoringBoard                                        *
*Entries :  7948827 : Total =      3819097622 bytes  File  Size =  242912702 *
*        :          : Tree compression factor =  15.74                       *
******************************************************************************
*Br    0 :pin1      : cNBOF/L:NBOF/L:t_BOF/L:NTimeTrgBOF/L:t_year/I:t_mon/I: *
*         | t_day/I:t_secday/I:cspTemp/I:extTemp/I:boardTemp/I:Vbias1/I:     *
*         | Vbias2/I:amplitude/I:baseline/I:ADCVal/I:fired/I:bAddr/I:totW/I: *
*         | Width/I                                                          *
*Entries :  7948827 : Total  Size=  763819380 bytes  File Size  =   52529324 *
*Baskets :     7935 : Basket Size=    4419072 bytes  Compression=  14.54     *
*............................................................................*
*Br    1 :pin2      : cNBOF/L:NBOF/L:t_BOF/L:NTimeTrgBOF/L:t_year/I:t_mon/I: *
*         | t_day/I:t_secday/I:cspTemp/I:extTemp/I:boardTemp/I:Vbias1/I:     *
*         | Vbias2/I:amplitude/I:baseline/I:ADCVal/I:fired/I:bAddr/I:totW/I: *
*         | Width/I                                                          *
*Entries :  7948827 : Total  Size=  763819380 bytes  File Size  =   52391726 *
*Baskets :     7935 : Basket Size=    4419072 bytes  Compression=  14.58     *
*............................................................................*
*Br    2 :laser     : cNBOF/L:NBOF/L:t_BOF/L:NTimeTrgBOF/L:t_year/I:t_mon/I: *
*         | t_day/I:t_secday/I:cspTemp/I:extTemp/I:boardTemp/I:Vbias1/I:     *
*         | Vbias2/I:amplitude/I:baseline/I:ADCVal/I:fired/I:bAddr/I:totW/I: *
*         | Width/I                                                          *
*Entries :  7948827 : Total  Size=  763827316 bytes  File Size  =   52890326 *
*Baskets :     7935 : Basket Size=    4419072 bytes  Compression=  14.44     *
*............................................................................*
*Br    3 :amer      : cNBOF/L:NBOF/L:t_BOF/L:NTimeTrgBOF/L:t_year/I:t_mon/I: *
*         | t_day/I:t_secday/I:cspTemp/I:extTemp/I:boardTemp/I:Vbias1/I:     *
*         | Vbias2/I:amplitude/I:baseline/I:ADCVal/I:fired/I:bAddr/I:totW/I: *
*         | Width/I                                                          *
*Entries :  7948827 : Total  Size=  763819380 bytes  File Size  =   19185868 *
*Baskets :     7935 : Basket Size=    4419072 bytes  Compression=  39.80     *
*............................................................................*
*Br    4 :pmt       : cNBOF/L:NBOF/L:t_BOF/L:NTimeTrgBOF/L:t_year/I:t_mon/I: *
*         | t_day/I:t_secday/I:cspTemp/I:extTemp/I:boardTemp/I:Vbias1/I:     *
*         | Vbias2/I:amplitude/I:baseline/I:ADCVal/I:fired/I:bAddr/I:totW/I: *
*         | Width/I                                                          *
*Entries :  7948827 : Total  Size=  763811444 bytes  File Size  =   65574399 *
*Baskets :     7935 : Basket Size=    4419072 bytes  Compression=  11.65     *
*............................................................................*
root [2]

I was expecting to ls a particular branch, for example laser, and it should list the leafs perhaps.

Thanks

4

Oh I see, I am afraid rootls does not print leaflists. You can request the feature at https://sft.its.cern.ch/jira/projects/ROOT/

Cheers,
Enrico

5

Thanks. My intention was to copy a particular variable to another branch of another tree of another file.

6

I see…I am afraid that’s not possible with rootcp, you will have to use the ROOT libraries directly.